1978 Mercury Cougar Engine Parts

Name: Engine Timing Cover Gasket Set
Brand: Felpro
SKU: TCS 45061
Price: 18.99 USD

Below you will find various in-demand Mercury Engine Parts, components and accessories for your 1978 Cougar. Advance Auto Parts has popular Cougar parts like Engine Timing Parts, Engine Internals, Camshafts and more. You’ll also find aftermarket and OEM Engine Parts for other Cougar model years including 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002 and more. Select a category of 1978 Mercury Cougar Engine Parts below and start saving instantly.

Please Select your Vehicle to See Exact Fit Parts

Popular 1978 Mercury Cougar Engine Parts Categories

Valve Covers

Engine Valve Lifters

Valve Cover Gaskets

Engine Timing Chain Kits

Oil Pumps

Oil Pan Gaskets

OE Engine Oil Coolers

Rear Main Seal Sets

Cylinder Head Bolt Sets

Engine Crankshaft Kits

Harmonic Balancers

Timing Cover Gasket Sets

Cylinder Head Gasket Sets

Timing Cam Gears

Gasket Kit Sets

Oil Pans

Cylinder Head Gaskets

Engine Oil Pump Pickup Tube and Screens

Engine Complete Overhaul Gasket Sets

Rubber Freeze Plugs

Crankshaft Pulleys

Timing Cover Repair Sleeves

Main Bearing Repair Sleeves

Oversized Main Bearings

Camshaft Bearings

Push Rods

Standard Rod Bearing Sets

Camshaft and Lifter Kits

Cylinder Head Bolts

Oil Pump Kits

Standard Piston Rings

Fuel Pump Flange Gaskets

Standard Individual Rod Bearings

Camshaft Plugs

Engine Valves

Rocker Arm Nuts

Standard Single Pistons

Engine Oil Pump Cover Gaskets

Expansion Plug – Pipes

Fuel Pump Gaskets

Engine Cylinder Head Plugs

Engine Valve Locks

Engine Valve Seats

Remanufactured Engines

Cylinder Heads

Engine Valve Spring Seat

Engine Timing Cover Bolt Sets

Engine Oil Pump Primers

Engine Assembly Lube

Camshaft Lubes

Engine Top End Kits

Valve Train Set Up Spring Set

Engine Timing Cover Repair Sleeve Kit

Essential Engine Parts for 1978 Mercury Cougars

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$18.99

Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

Timing cover set includes gaskets and seals necessary for timing chain/belt replacement job
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

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$549.99

Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods.

Product Features:

Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
Best with aftermarket converters and more rear gear.
Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

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$41.99

Mr. Gasket Performance Valve Cover Gaskets are high-density cork/rubber blend gaskets that use evenly sized cork particles distributed evenly throughout the rubber binder. The result is a compressible valve cover gasket without leak paths. These gaskets create a positive seal by controlled swelling of the gasket material when exposed to hot engine oil. Provides excellent flange sealing and durability. For original equipment replacement, high performance street, drag race and oval track use.

Product Features:

Manufactured from high-density cork/rubber blend gasket material
Provides excellent sealing and durability
For OE replacement, high performance street, drag race and oval track use

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$211.99

Billet Crankshaft Sprocket Has Nine Keyways for +/- 8 Degrees Adjustability. Both Billet Steel Sprockets are Heat Treated for Durability. TRUE Roller 0.250″ Roller Diameter Chain for Reduced Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.

Product Features:

The complete kits, which meet or exceed OEM performance requirements, ensure a quiet and maintenance-free experience
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes Timing Kits may include camshaft sprockets, crankshaft sprockets, timing chains, tensioners, and guides
Refer to our online catalog for detailed application-specific information
Keep your engine’s valve train in perfect time with Cloyes, the world leader in timing drive systems.

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$30.99

Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
Engineered and manufactured specifically for repair applications
Unsurpassed quality you can trust
Validated for fit, form, and function

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$37.99

Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

A-Series bi-metal aluminum alloy
Greater seizure resistance than tri-metal material
Dramatically reduces or eliminates bearing wear
Made with silicon to provide greater surface hardness
Silicon particles help polish crankshaft journal to further reduce wear during operation
Utilizes ISO & QS certified manufacturing

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$31.99

This engine oil dipstick is designed to match the fit and function of an original equipment dipstick in specified applications. Level marks are clearly distinguished and properly gauged for accuracy.

Product Features:

Ideal replacement – this engine oil dipstick is designed to match the fit and function of an original equipment dipstick in specified applications
Ideal solution – level marks are clearly distinguished and properly gauged for accuracy
Durable construction – designed and manufactured to strict specifications for reliable performance
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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$472.99

Since 1921, Cloyes has been the trusted leader in automotive timing systems delivering premium-quality solutions. Cloyes engine timing chain kits are engineered for precision, durability, and optimal engine performance. Kits include all chains, sprockets, tensioners, chain guides, and chain tensioner guides – respective to application and kit selection. To ensure total timing system integrity, Cloyes recommends replacing all engine timing components. Trusted by professionals for over a century & backed by an industry-leading limited Warranty and technical support.

Product Features:

Cloyes chains are pre-stressed and heat-treated. Engineered and manufactured with precision pitch control to ensure optimal chain-to-sprocket fit reducing noise, minimizing fatigue, maintaining accurate timing and delivering long-term durability.
Sprockets are CAD designed, manufactured using premium material and heat-treated. Featuring precision-tooled tooth form, bore, off-set and timing index for superior fit, reliability, and long-term performance in engine timing repairs.
Timing chain tensioners can use spring tension or hydraulic pressure to properly tension the chain. All are CAD designed and manufactured using premium materials allowing for smooth installation and reliable performance.
Chain guides serve as a guide (or track) for the timing chain and either apply tension to the system or simply give it a path, connecting crankshaft and camshaft ensuring proper alignment and timing.
All timing components designed in the USA and manufactured using premium materials for OE-level fit and function, allowing for smooth installation and reliable performance.
Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks.
Backed by Limited Lifetime Warranty and over 100 years of engineering leadership with unmatched technical support and repair confidence in every kit.

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$23.99

Sprocket Made From High Alloy Material. Sprocket Teeth Are Heat Treated. Precision Tooth Form To Assure Proper Chain Engagement, And Precise Keyway To Tooth Timing.

Product Features:

Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Refer to our online catalog for detailed application-specific information

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$120.99

Made in USA. Melling oil pumps provide dependable performance every time in every application. Every Melling oil pump is engineered and assembled to the highest production standards from high quality materials. All Melling oil pumps use the latest in gear and gerotor technology to provide the highest level of quality and performance. Gears are machined to close tolerances to ensure proper engine pressure and correct, efficient pump operation. End plates are precision ground for maximum wear resistance. Every Melling oil pump is individually tested for pressure and flow under conditions designed to duplicate actual engine operating conditions.

Product Features:

Manufactured from high quality materials for consistent durable wear
Precision engineered for optimum fit and function
Designed for long-life and worry-free performance
Melling oil pumps are tested for pressure and flow under operating conditions to ensure quality

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$4.29

This engine cylinder head bolt directly replaces the original bolt on specific vehicle years, makes and models.

Product Features:

Direct replacement – designed to match the fit and function of the original cylinder head bolt on certain vehicles
Corrosion resistant – withstands elements for reliable service life
Application specific – made to hold cylinder head in place on specific vehicles
Trustworthy quality – backed by team of engineers and inspectors in United States

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$89.99

Meets or exceeds OEM performance requirements. Cloyes utilizes the latest in design And material technology, ensuring quiet And maintenance-free experience.

Product Features:

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information
Pre-Stressed And Heat-Treated For Increased Durability. Precision Cut Plates And Rollers With Smooth Finish. Precision Pitch Control For Proper Chain To Sprocket Tooth Fit.

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$77.99

Far superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under-head radius and rolled threads for the utmost reliability. The threads are rolled after heat-treating, which makes them about 2000 Percent longer fatigue life than most main bolts, which are threaded prior to heat-treating.

Product Features:

Forged From Premium Grade 8740 Chrome Moly Steel
Generous Under Head Radius And Rolled Threads For The Utmost Reliability
Reduced Wrenching Head
Designed To Meet The Exacting Standards And Demands Of Professional Engine Builders
2-Bolt Main
Front or Rear Sump
Includes Oil Pickup Standoff Bolt
180,000 PSI

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$10.49

A new Melling oil pump shaft is recommended to complete every new oil pump install. Melling offers a complete line of high quality shafts for domestic and import pump applications. A new oil pump shaft is necessary due to possible metal fatigue, cracking

Product Features:

Manufactured from high quality materials for consistent durable wear
Precision engineered for optimum fit and function
Designed for long-life and worry-free performance
Meets or exceeds original equipment specifications

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$120.99

High Energy Hydraulic lifters have a patented constant orifice metering valve that precisely meters oil to the rocker arms. Continuous contact between the metering valve and pushrod seat is maintained, eliminating excessive oiling at high engine speeds. The pushrod seat is made of a special powdered metal iron alloy that is heat-treated for strength and wear resistance.In addition, High Energy Lifters have a lightweight check valve disc that allows for quicker response, which results in increased engine speed before valve float. This check valve disc also maintains added control at all engine speeds and loads.COMP Cams High Energy Hydraulic Lifters also contain a longer piston than conventional hydraulic lifters, which provides more load bearing surface and increases lifter longevity.

Product Features:

.875″ diameter; 105g weight; 2.05″ seat height
Patented orifice metering valve precisely meters oil to the rocker arms
Continuous contact between metering valve and hardened pushrod seat is maintained, eliminating excessive oiling at high engine speeds
Contain a longer piston than conventional hydraulic lifters, which provides more load bearing surface and increases lifter longevity
Lightweight check valve disc allows for quicker response and maintains added control at all engine speeds and loads

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$36.49

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool

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$8.49

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$159.99

Powerbond Premium OEM Replacement Balancers are manufactured using premium ductile iron castings and injection bonded dampening rubber. Unlike typical original equipment balancers that are made with press inserted dampening rubber, the bonded dampening rubber in the Powerbond Premium OEM Replacement Balancer provides superior bonding strength between the inner and outer balancer rings that minimizes spinning and dislocation in high torque and serpentine belt appplications. With a unique combination of high strength castings, bonded dampening rubber, and dynamic balance, the Powerbond Premium OEM Replacement Balancer is the ultimate standard replacement balancer.

Product Features:

Designed as a premium OE replacement
Dynamically balanced for smooth operation
Strong Iron casting for maximum strength
OEM equivalent bonded rubber

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$350.99

These Magnum Roller Rocker Arms for Ford V8 289-351W (Rail Type) 1968-89 applications are the ultimate street rocker. With a 3/8″ stud diameter and 1.6 ratio, they are designed for serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly steel, which is a superior material that will not flex and assures maximum lift. Their roller tip reduces friction, while stiff design and superior ratio accuracy yield more effective valve lift. With a 15 to 30 horsepower increase over other rocker arms, Magnum Roller Rockers are perfect for performance applications with less than 350 lbs. open spring pressure. Don’t accept inferior products or cheap knock-offs, look for the COMP Cams logo stamped into the underside of every Magnum Rocker.

Product Features:

Ultimate street rocker designed for serious performance enthusiasts
Constructed from 8620 chromemoly steel, a superior material that will not flex and assures maximum lift
Roller tip reduces friction while stiff design and superior ratio accuracy yields more effective valve lift
15 to 30 horsepower increase over stock rocker arms
Use in any applications with less than 350 lbs. open spring pressure

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$78.99

The Edelbrock #4460 Signature Series Valve Covers are designed for Ford 260-289-302 (not Boss) and 351W V8 applications. Engineered for function and styled for great looks, Signature Series valve covers have stock-style breather baffles that prevent oil passage to the PCV valve. These quality valve covers accept all emissions equipment, including PCV valve holes. Rubber grommets for the breather and PCV valve holes are included. Matching breathers sold separately.

Product Features:

Small Block Ford 221-351W 62-95
Tall
Chrome Steel
Set Of Two
Rubber Grommets For Breather

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$67.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Includes all parts needed to complete the repair

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$57.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
Validated for fit, form and function
Unsurpassed quality you can trust

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$89.99

Replace your stock black engine pulleys with chrome plated steel pulleys from Mr. Gasket.

Product Features:

Single Groove
Chrome Plated

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$0.72

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$6.99

Product Features:

Superior Wear Protection – Formulated with extreme pressure additives to protect engine components from metal-to-metal contact during initial startup
High Tackiness – Stays in place during assembly and storage, ensuring consistent lubrication exactly where it’s needed
Broad Compatibility – Safe for use with all engine components including camshafts, lifters, bearings, and valve train parts
Easy Startup Support – Reduces friction and prevents dry starts by providing instant lubrication during first engine fire-up

Upgrade your 1978 Mercury Cougar with Top-Quality Engine Parts

When it comes to maintaining or upgrading your 1978 Mercury Cougar, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Mercury or enhancing its overall performance, Engine Parts are key to keeping your Cougar functioning at its best. At Advance Auto Parts, we offer a wide selection of 439 Engine Parts for the 1978 Mercury Cougar, designed to meet your needs without breaking the bank. From Engine Timing Part replacements to Engine Internals upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Engine Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Engine Parts for your 1978 Mercury Cougar at great prices. Our Engine Parts inventory for this model ranges from just $0.43 to $4,078.99, with an average price of $229.94. Our 439 Engine Parts in stock come from 22 trusted brands, so you’re sure to find the right part for your 1978 Mercury Cougar without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 1978 Mercury Cougar, we stock popular OEM and aftermarket Engine Parts from top names like Felpro, Melling, Dorman, and more. Felpro Engine Parts start at just $35.99 and boast an impressive 4.6 stars average rating from customers. Melling and Dorman also bring quality to the table, with Engine Parts available starting at $1.29, and at an average 4.3 stars rating. With 1,230 customer reviews and counting, our 1978 Mercury Cougar Engine Parts have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Engine Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 1978 Mercury Cougar is always ready to roll. We’re committed to providing you with everything you need to keep your Cougar in top shape, all in one place. Start shopping confidently below for your 1978 Mercury Cougar!

Best-Selling Engine Timing Parts for 1978 Mercury Cougars

Enhance the driving experience in your Mercury with 30 quality Engine Timing Part components, starting at $5.29.

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$10.99

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

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$12.49

Made of stainless steel
Designed to prevent timing cover seal leaks
Takes up gaps caused by worn-out harmonic balancer shafts

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$51.99

Billet Crankshaft Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Crankshaft Sprocket Heat Treated for Durability. 0.200″ Double Row Fixed Bushing Chain.

Product Features:

The complete kits, which meet or exceed OEM performance requirements, ensure a quiet and maintenance-free experience
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes Timing Kits may include camshaft sprockets, crankshaft sprockets, timing chains, tensioners, and guides
Refer to our online catalog for detailed application-specific information
Keep your engine’s valve train in perfect time with Cloyes, the world leader in timing drive systems.

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$74.99

Product Features:

Solid Bushing Chain Resists Stretching
For Use with Stock or Edelbrock Camshafts
Stressproof Steel Crank Gears
3 Keyway Setting Points To Ensure Accurate Timing
True Bearing Surface Rolls with the Sprockets
For Engine with One-Piece Fuel Pump Eccentric

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$18.99

Design type: spring loaded; multi-lip
Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
Resistance to EP lubricants
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

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$42.99

ARP timing cover bolts are available in both polished stainless steel or black oxide finish chrome moly. You also can choose between standard hex head bolts or compact 12 point fasteners. Also available as part of ARP complete engine and accessory kits. Studs are preferred by many pro engine builders because they eliminate the chance of pinching gaskets and contribute to easier engine assembly. You will note that ARP studs feature a special bullet nose to guide the nut accurately into place. Available in black oxide finish 8740 chrome moly or polished stainless steel with hex or 12 point nuts. Alternators that come loose are a pain, so That is why ARP came up with these super tough bolts (your choice of chrome moly steel or polished stainless (ARP 300) both rated 170,000 PSI). The stainless has the added advantage of being rust and corrosion resistant. It is the fastener of choice.

Product Features:

Made From Black Oxide Finished 8740 Chrome Moly Or Corrosion Resistant Stainless Steel
Nominally Rated At 180,000 Pounds Per Square Inch Tensile Strength To Provide You With Plenty Of Clamping Force
Made In USA
Will Not Fit 5.0L Roller Cam Applications
Sold As A Kit

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$33.99

Utilizes the latest in design and technology to offer complete chain sets. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Utilizes the latest in design and technology to offer complete chain sets. Refer to our online catalog for detailed application-specific information. SET INCLUDES: S430T Engine Timing Camshaft Sprocket (1 EA), S431 Engine Timing Crankshaft Sprocket (1 EA), C358 Engine Timing Chain (1 EA).

Product Features:

Timing Set includes all components for a quick and efficient replacement
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Utilizes the latest in design and technology to offer complete chain sets
Refer to our online catalog for detailed application-specific information

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$27.99

Utilizes the latest in design and technology to offer complete chain sets. CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance. Utilizes the latest in design and technology to offer complete chain sets. Refer to our online catalog for detailed application-specific information. SET INCLUDES: S436T Engine Timing Camshaft Sprocket (1 EA), S475 Engine Timing Crankshaft Sprocket (1 EA), C498 Engine Timing Chain (1 EA).

Product Features:

Timing Set includes all components for a quick and efficient replacement
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Utilizes the latest in design and technology to offer complete chain sets
Refer to our online catalog for detailed application-specific information

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$19.99

Street Performance 3/8″ Pitch Double Roller Replacement True Roller Chain. Seamless 0.250″ Roller Diameter. Heat Treated and Processed Links to Maximize Breaking Strength while Remaining Ductile for Toughness. Prestressed to Increase Fatigue Life. USA Made.

Product Features:

A timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing of the engines valve events for each cylinder
Our chains are engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
From stock replacement to high performance, Cloyes has the most complete timing chain catalog
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes recommends the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced as these components play a vital role in system stability and accurate timing
Refer to our online catalog for detailed application-specific information
Keep your engines valvetrain in perfect time with Cloyes, the world leader in timing drive systems

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$115.99

Billet Camshaft Sprocket for Superior Street Performance. Billet Crankshaft Sprocket Has Nine Keyways for +/- 8 Degrees Adjustability. Crankshaft Sprocket Heat Treated for Durability. Seamless TRUE Roller 0.250″ Roller Diameter Chain for Reduced Friction.

Product Features:

The complete kits, which meet or exceed OEM performance requirements, ensure a quiet and maintenance-free experience
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes Timing Kits may include camshaft sprockets, crankshaft sprockets, timing chains, tensioners, and guides
Refer to our online catalog for detailed application-specific information
Keep your engine’s valve train in perfect time with Cloyes, the world leader in timing drive systems.

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$77.99

High Performance 3/8″ Pitch Double Roller Replacement True Roller Chain. 0.250″ Roller Diameter. Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness. Prestressed to Increase Fatigue Life.

Product Features:

A timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing of the engines valve events for each cylinder
Our chains are engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
From stock replacement to high performance, Cloyes has the most complete timing chain catalog
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes recommends the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced as these components play a vital role in system stability and accurate timing
Refer to our online catalog for detailed application-specific information
Keep your engines valvetrain in perfect time with Cloyes, the world leader in timing drive systems

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$20.99

Street Performance 3/8″ Pitch Double Roller Replacement TRUE Roller Chain. Seamless 0.250″ Roller Diameter. Heat Treated and Processed Links to Maximize Breaking Strength while Remaining Ductile for Toughness. Pre-stressed to Increase Fatigue Life.

Product Features:

A timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing of the engines valve events for each cylinder
Our chains are engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
From stock replacement to high performance, Cloyes has the most complete timing chain catalog
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes recommends the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced as these components play a vital role in system stability and accurate timing
Refer to our online catalog for detailed application-specific information
Keep your engines valvetrain in perfect time with Cloyes, the world leader in timing drive systems

High Energy 218/218 Hydraulic Flat Cam SK-Kit for Ford 351C, 351M-400M

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$573.99

High Energy 218/218 Hydraulic Flat Cam SK-Kit for Ford 351C, 351M-400M

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$188.99

The complete kits, which meet or exceed OEM performance requirements, ensure a quiet and maintenance-free experience
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes Timing Kits may include camshaft sprockets, crankshaft sprockets, timing chains, tensioners, and guides
Refer to our online catalog for detailed application-specific information
Keep your engine’s valve train in perfect time with Cloyes, the world leader in timing drive systems.

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$158.99

Billet Crank Sprocket Has Three Keyways for +/- 4 Degrees Adjustability. Both Sprockets Heat Treated for Durability. TRUE Roller 0.250″ Roller Diameter Chain for Reduced Friction. 3-Piece Sets Hand-Matched to Qualify the Correct Center Distance and Minimize Runout.

Product Features:

The complete kits, which meet or exceed OEM performance requirements, ensure a quiet and maintenance-free experience
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes Timing Kits may include camshaft sprockets, crankshaft sprockets, timing chains, tensioners, and guides
Refer to our online catalog for detailed application-specific information
Keep your engine’s valve train in perfect time with Cloyes, the world leader in timing drive systems.

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$147.99

The complete kits, which meet or exceed OEM performance requirements, ensure a quiet and maintenance-free experience
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes Timing Kits may include camshaft sprockets, crankshaft sprockets, timing chains, tensioners, and guides
Refer to our online catalog for detailed application-specific information
Keep your engine’s valve train in perfect time with Cloyes, the world leader in timing drive systems.

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$87.99

ENGINE TIMING SET

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$74.99

ENGINE TIMING SET

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$68.99

High Performance 3/8″ Pitch Double Roller Replacement TRUE Roller Chain. 0.250″ Roller Diameter. Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness. Pre-stressed to Increase Fatigue Life.

Product Features:

A timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing of the engines valve events for each cylinder
Our chains are engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
From stock replacement to high performance, Cloyes has the most complete timing chain catalog
Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Cloyes recommends the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced as these components play a vital role in system stability and accurate timing
Refer to our online catalog for detailed application-specific information
Keep your engines valvetrain in perfect time with Cloyes, the world leader in timing drive systems

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$53.99

The FAG repair sleeve is a precision element that provides additional sealing for damaged shafts. Made of heat-treated stainless steel, the FAG repair sleeve signifcantly increases the life of the shaft and prevents premature wear. Since no shaft removal or machining is required during the repair, the repair sleeve is a cost effective repair solution to protect damaged surfaces.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

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$44.99

With the backing of an industry-leading two year or 60,000 mile parts and labor warranty, each Dayco timing chain kit includes top-grade timing chains, precision machined crank sprockets and cam sprockets, tensioners, high-grade plastic guides, seals and VVT solenoids and cam phasers if the application calls for it.

Product Features:

High quality chains prevent stretch for the life of the kit, addressing the no. 1 replacement issue
Precision machined sprockets for exact timing
High-grade plastic guides use same material as OE for excellent wear resistance
Contains: Camshaft Sprocket, Crankshaft Sprocket, Timing Chain

from

$37.99

ENGINE TIMING SET

from

$34.99

Sprocket Made From High Alloy Material. Features Precision Tooth Form To Assure Proper Chain Engagement, And Is Balanced For Proper Timing.

Product Features:

Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
CAD designed and manufactured using premium materials
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Refer to our online catalog for detailed application-specific information

from

$29.99

Pre-Stressed And Heat-Treated For Increased Durability. Precision Cut Links With Smooth Finish. Precision Pitch Control For Proper Chain To Sprocket Tooth Fit.

Product Features:

Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
Engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
CAD designed and manufactured using premium materials
Refer to our online catalog for detailed application-specific information
Pre-Stressed And Heat-Treated For Increased Durability. Precision Cut Plates And Rollers With Smooth Finish. Precision Pitch Control For Proper Chain To Sprocket Tooth Fit.

Top Picks for 1978 Mercury Cougar Camshafts

Upgrade Mercury Cougars with top-quality Camshafts parts, including 69 OEM and aftermarket selections for your 1978 model.

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from

$450.99

Product Features:

Designed for 1500 to 6500 Performance
Maximum Power in High-RPM with Good Low-End Torque
Matched to Edelbrock Performer RPM Intakes
10 to 12 in. of Manifold Vacuum at Idle
More Lift and Duration than Most Street Camshafts
Includes Hydraulic Lifters and Assembly Lube
Dyno Matched/Street Proven Performance
Take The Guesswork Out Of Camshaft Selection

from

$12.99

Unsurpassed quality that you can trust
Uses leading edge materials
State-of-the-art manufacturing
Exacting tolerances
Meets or exceeds OEM specifications

from

$43.99

Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

Steel-backed Babbitt lining material
Used in automotive and high-performance
Babbitt is designed to perform under extreme loads w/o damaging other engine parts
Babbitt is more environmentally friendly than other material
ISO & QS certified manufacturing

from

$39.49

Steel-backed Babbitt lining material
Used in automotive and high-performance
Babbitt is designed to perform under extreme loads w/o damaging other engine parts
Babbitt is more environmentally friendly than other material
ISO & QS certified manufacturing

from

$340.99

Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
Best with aftermarket converters and more rear gear.
Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

from

$268.99

Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts,

Product Features:

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

from

$297.99

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

from

$268.99

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

from

$242.99

Ideal for use with mainly stock components like rocker arms, intake manifolds, cylinder heads, compression ratio, torque converters and rear gear ratios, the High Energy camshaft grind family is a great choice for street performance applications.

Product Features:

Good blend of efficiency and performance.
Perfect choice for performance street rebuilds.
Work well with mainly stock components such as rockers, manifolds, heads, compression, torque converters and gears.

from

$3.29

This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$2.99

Direct replacement – this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$645.99

Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
Best with aftermarket converters and more rear gear.
Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

from

$647.99

Excellent performance in street carbureted applications.
More vacuum allows an increase in duration for improved performance and assists power brakes.
Quicker opening lobe profiles deliver increased responsiveness and more area under the lift curve.
Best performance with aftermarket intake manifolds, headers, lower gear ratios etc.

Nostsalgia Plus 219/226 Hydraulic Flat Cam and Lifter Kit for Ford 221-302

from

$632.99

Nostsalgia Plus 219/226 Hydraulic Flat Cam and Lifter Kit for Ford 221-302

from

$626.99

Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
Best with aftermarket converters and more rear gear.
Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

Xtreme Energy 230/236 Hydraulic Flat Cam SK-Kit for Ford 221-302

from

$616.99

Xtreme Energy 230/236 Hydraulic Flat Cam SK-Kit for Ford 221-302

Xtreme Energy 224/230 Hydraulic Flat Cam SK-Kit for Ford 221-302

from

$595.99

Xtreme Energy 224/230 Hydraulic Flat Cam SK-Kit for Ford 221-302

High Energy 192/200 Hydraulic Flat Cam SK-Kit for Ford 221-302

from

$586.99

High Energy 192/200 Hydraulic Flat Cam SK-Kit for Ford 221-302

from

$581.99

An older member of the COMP Cams grind family, the Magnum series of camshafts offers excellent performance gains over stock without the added wear and tear associated with more aggressive camshafts.

Product Features:

Best with aftermarket torque converters and 9.5:1 compression.
Great high RPM power.
Easy on valve train parts.
Can be used with mild ratio rocker arms and traditional performance valve springs.

Magnum 260/260 Solid Flat Cam and Lifter Kit for 351C, 351M-400M

from

$576.99

Magnum 260/260 Solid Flat Cam and Lifter Kit for 351C, 351M-400M

Xtreme Energy 218/224 Hydraulic Flat Cam SK-Kit for Ford 221-302

from

$552.99

Xtreme Energy 218/224 Hydraulic Flat Cam SK-Kit for Ford 221-302

from

$549.99

Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
Best with aftermarket converters and more rear gear.
Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

from

$549.99

Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
Best with aftermarket converters and more rear gear.
Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

from

$549.99

Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note.
Best with aftermarket converters and more rear gear.
Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods.

In-Demand Valve Cover and Cylinder Heads for 1978 Mercury Cougars

Select from 126 premium Valve Cover and Cylinder Heads parts for your 1978 Mercury Cougar, with prices ranging from $0.43 to $1,838.99.

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from

$35.99

PermaTorque head gaskets meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Requires no retorquing of the head bolts
Manufactured for the repair environment
Validated for fit, form, and function
Unsurpassed quality you can trust

from

$0.43

Unsurpassed quality that you can trust
Uses leading edge materials
State-of-the-art manufacturing
Exacting tolerances
Meets or exceeds OEM specifications

from

$2.49

from

$350.99

Ultimate street rocker designed for serious performance enthusiasts
Constructed from 8620 chromemoly steel, a superior material that will not flex and assures maximum lift
Roller tip reduces friction while stiff design and superior ratio accuracy yields more effective valve lift
15 to 30 horsepower increase over stock rocker arms
Use in any applications with less than 350 lbs. open spring pressure

from

$35.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Manufactured for the repair environment
Unsurpassed quality you can trust
Unsurpassed quality you can trust

from

$88.99

The Edelbrock #4461 Signature Series Valve Covers are designed for Ford 351M-400 and 351C V8 applications. Engineered for function and styled for great looks, Signature Series valve covers have stock-style breather baffles that prevent oil passage to the PCV valve. These quality valve covers accept all emissions equipment, including PCV valve holes. Rubber grommets for the breather and PCV valve holes are included. Matching breathers sold separately.

Product Features:

Ford 351M-400 & 351C V8
Short
Chrome Steel
Set Of Two
Rubber Grommets For Breather

from

$0.72

from

$107.99

Product Features:

Highest Quality Head Bolts
Cold-Formed/Heat Treated
Ensures Molecular Integrity
Reduced Diameter Bolt Heads
Hardened/Parallel-Ground Washers Included
Rated At 170000 psi
Manufactured By ARP

from

$117.99

Complete kit includes retainers and locks. Springs made of highest quality spring wire. Springs precision wound to close tolerances. Includes superior quality steel retainers. Includes 7 degree heat-treated valve stem locks. Retainers and locks black oxide coated. Non-Rotator style: Dyno tested and street proven. Great match to Edelbrock camshaft kit.

Product Features:

For Use With Cast Iron Heads
Springs Made of Highest Quality Spring Wire
Springs Precision Wound To Close Tolerances
Use with Original Equipment Heads Only

from

$4.29

This engine cylinder head bolt directly replaces the original bolt on specific vehicle years, makes and models.

Product Features:

Direct replacement – designed to match the fit and function of the original cylinder head bolt on certain vehicles
Corrosion resistant – withstands elements for reliable service life
Application specific – made to hold cylinder head in place on specific vehicles
Trustworthy quality – backed by team of engineers and inspectors in United States

from

$2.49

State-of-the-art manufacturing
Exceptional material quality
Exacting tolerances
Heat treated tips
Stock or mild modified replacement
Made in USA

from

$1.99

from

$78.99

Small Block Ford 221-351W 62-95
Tall
Chrome Steel
Set Of Two
Rubber Grommets For Breather

from

$82.99

High Performance head bolts are available with a reduced wrenching hex or 12 point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 PSI (which is 15 Percent stronger than Grade 8) and kits come complete with hardened parallel ground washers.

Product Features:

High Performance Head Bolts Are Available With A Reduced Wrenching Hex Or 12 Point
Wide Area Flanged Head That Eliminates The Need For Valve Train Removal To Facilitate Cylinder Head Retorquing
Rated At 180,000 Psi Tensile Strength
High Performance Head Bolts Are Stronger

from

$66.99

High Energy Pushrods from COMP Cams are an affordable, high quality solution when building street rods, RVs and daily drivers. High Energy Pushrods have a durable one-piece construction that meets or exceeds all OE pushrod specifications and fit perfectly with High Energy and Magnum Rocker Arms.

Product Features:

5/16″ diameter, 6.881″ length for Small Block Ford 255 and 302, ’65-up with Flat Tappet Cam
Best choice when building street rods, RVs or daily drivers
Meet or exceed all OE pushrod specifications
Mate perfectly with High Energy and Magnum Rockers
Durable one-piece construction

from

$89.99

Mr. Gasket Ultra-Seal Head Gaskets are a five layer (graphite core/perforated steel outer layers) composite construction. The graphite core has excellent thermoconductivity (transfers heat) away from hot spots in head preventing gasket burn-out. They provide excellent stability, compressibility and high temperature endurance. A high temperature silicone coating ensures sealing of engine fluids. Compatible with cast iron or aluminum heads, they will not brinell (indent) aluminum cylinder heads. Suitable for high performance street, drag race and oval track use. Sold individually.brbrGasket Bore 4.100 inch, Compressed thickness 0.038 inch

Product Features:

Five layer (graphite core/perforated steel outer layers) composite construction
Graphite core has excellent thermo-conductivity-transfers heat away from hot spots in head preventing gasket burn-out
Provides excellent stability, compressibility and high temperature endurance
Coated with high temperature silicone to ensure sealing of engine fluids
Will not brinell (indent) aluminum cylinder heads
For high performance street, drag race and oval track use
Compatible w/High Octane Fuel
Compatible With Exotic Fuel

from

$67.99

Head sets contain gaskets and seals necessary for a valve grind or head reconditioning job
Application specific design to ensure a perfect fit and premium seal
Premium quality parts you can trust
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Contains all the parts needed to complete the repair unless otherwise noted

from

$137.99

High Performance Head Bolts Are Available With A Reduced Wrenching Hex Or 12 Point
Wide Area Flanged Head That Eliminates The Need For Valve Train Removal To Facilitate Cylinder Head Retorquing
Rated At 180,000 PSI Tensile Strength
High Performance Head Bolts Are Stronger

from

$8.49

from

$129.99

Our unique Multi-Layered steel head gasket embossment formation process optimizes the embossment radius, reduces stress points, enhances gasket conformability, and provides uniform clamp load distribution. This all results in superior surface contact between block and cylinder head. All head gasket layers/spacers go through an additional process to significantly reduce forming induced stress. Advantages are reduced brittleness in material, increased flexibility and deformation retention. This stabilizes the gasket, resulting in reduced cylinder bore distortion and improved combustion seal fro the extreme cylinder pressures found in high compression, supercharged and turbocharged applications. A proprietary polymer coating ensures the micro-seal of engine coolant and oil fluids.brbrA typical MLS head gasket requires a smoother (30Ra) surface finish than composite head gaskets. Mr. Gasket’s proprietary polymer coating will seal a surface finish twice as rough (60Ra) as a typical MLS head gasket. For high performance street, drag race and oval track use.

Product Features:

Gasket bore – 4.030 inch: Compressed thickness – .040 inch
Manufactured from 3-layer premium grade stainless steel and state of the art laser cutting
Optimized sealing embossments seals extreme cylinder pressure
Provides excellent stability and reduces cylinder bore distortion.
Proprietary polymer coating ensures the micro seal of engine coolant and oil fluids.
Ideal for supercharged, turbocharged, nitrous oxide and extreme compression ratio engines
For high-performance street, drag race and oval track use

from

$479.99

Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights

Product Features:

For simplicity, any Super Lock fits any COMP Cams 10° retainer – just choose the correct lock for you valve size and application
Super Locks are recommended in all race applications

from

$120.99

.875″ diameter; 105g weight; 2.05″ seat height
Patented orifice metering valve precisely meters oil to the rocker arms
Continuous contact between metering valve and hardened pushrod seat is maintained, eliminating excessive oiling at high engine speeds
Contain a longer piston than conventional hydraulic lifters, which provides more load bearing surface and increases lifter longevity
Lightweight check valve disc allows for quicker response and maintains added control at all engine speeds and loads

from

$98.99

If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in, you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. ARP rocker studs are concentric within 0.005 T.I.R. thread pitch to thread pitch. They run in straight and true. Lengths are exact designed to provide positive seating every time. An extra large radius base offers greater resistance to flex. Available in both High Performance and Pro Series models. To be used with ARP patented Perma-Loc(TM) adjusters.

Product Features:

Made Of 8740 Chrome Moly Forgings
Heat Treated To 180,000 Psi
Excellent For Elapsed Time Bracket Racing, Limited Rule Oval Track Competition And Street Use
Lengths Are Exact Designed To Provide Positive Seating Every Time
Set of 16
1″ Adjuster Thread Length
3/8″-24 Shank Diameter and Thread
3/8″ Typical Small Block Application with Roller Rockers

from

$101.99

Designed to keep the rocker arms positively locked for precise and critical valve train adjustments. Manufactured from quality grade steel, then heat-treated for extra strength and plated with a durable finish. Kits include 16 rocker arm nuts with socket head set screws and one hex key wrench.

Product Features:

(16) Rocker Arm Nuts w/ Locks 3/8″-24 Threads
Shank O.D. .540″
Includes Locks and Hex Wrench
High-Quality Grade Steel
Heat-Treated For Ex Strength
Plated With Durable Gold Tone Finish

Most Sold 1978 Mercury Cougar Engine Gaskets and Seals

Explore our best-selling Mercury parts for the 1978 Cougar among 37 OEM and aftermarket options starting from $1.49.

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from

$47.99

Product Features:

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
STRONG AND DURABLE – Features molded rubber over a rigid carrier which resists high heat
SUPERIOR SEAL – Proprietary rubber sealing beads help eliminate potential leak paths for a superior seal
EASIER TO INSTALL – Locating tabs assure proper alignment and easier installation
PREVENTS OVERTIGHTENING – Torque limiters help eliminate overtightening and gasket splitting and extruding
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

from

$52.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$26.99

Timing cover set includes gaskets and seals necessary for timing chain/belt replacement job
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

from

$26.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$26.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$3.29

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SEALING TECHNOLOGIES – Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
ENGINEERING EXPERTISE – Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
REAL-WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

from

$24.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$22.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$24.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$26.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$18.99

Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
Engineered and manufactured specifically for repair applications
Unsurpassed quality you can trust
Validated for fit, form, and function

from

$50.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$24.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road

from

$16.99

Application specific design to ensure a perfect fit
Meets or exceeds all original equipment specifications
Engineered and manufactured specifically for repair applications
Unsurpassed quality you can trust
Validated for fit, form, and function

from

$20.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
ENGINEERED TO PERFORM – Proprietary cork-rubber formulation
SUPERIOR SEAL – Highly conformable to accommodate for the imperfect sealing surfaces
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
REAL WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road
ENGINEERING EXPERTISE – Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development

from

$18.99

Timing cover set includes gaskets and seals necessary for timing chain/belt replacement job
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

from

$83.99

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface scratches and imperfections
SEALING TECHNOLOGIES – Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces

from

$30.99

Available in kits including front cover gasket, crankshaft seal, fuel pump and water pump gasket or including cover gasket and front seal.

Product Features:

Timing Cover Gasket And Oil Seal Kit

from

$2.29

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Includes all parts needed to complete the repair

from

$49.99

This Mr. Gasket Rear Main Seal is made from silicone to allow the seal to handle extreme engine oil temperature. It also provides for an upgrade for that leaky rope style seal and is a direct replacement for a rubber main seal. It’s also injection molded for a precise fit.

Product Features:

Repairs That Leaky Rear Main Sail
Silicone Rubber to Withstand Extreme Engine Oil Temperatures
Upgrade for Rope Seal Equipped Cars or Direct Replacement for Rubber Main Seal
Injection Molded for Precise Fit

from

$26.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

from

$2.99

DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
SEALING TECHNOLOGIES – Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
ENGINEERING EXPERTISE – Parts are designed, reviewed, validated and approved by Fel-Pro engineers through rigorous research and development
REAL-WORLD TESTED – Parts are tested on-vehicle and validated to ensure optimal performance on the road
EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted

from

$36.99

Product Features:

Valve Cover Gasket

from

$174.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Includes all parts needed to complete the repair

Top-Rated Engine Parts Brands For Your 1978 Mercury Cougar

Shop for the best-rated brands offering Engine Parts and other products for your 1978 Mercury Cougars. Below you’ll find some of our best rated Engine Parts from Felpro, Melling, and Dorman, and more. Engine Parts from these brands that fit a 1978 Cougar start at just $1.29 and are rated as high as 4.6 stars. OEM and aftermarket Engine Parts don’t get more top quality, durable, and affordable than from the brands below.

Popular Felpro 1978 Mercury Cougar Engine Parts

When it comes to maintaining or upgrading your 1978 Mercury Cougar, using quality Engine Parts is essential to ensure durability and a perfect fit. Felpro ticks all of those boxes. We offer a wide selection of Felpro Engine Parts, specifically designed for the 1978 Mercury Cougar. With over 3 Felpro brand Engine Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $35.99, with an average price of just $45.66. Plus, with over 42 customer reviews and an average rating of 4.6 stars, you can trust that our Felpro Engine Parts will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from $35.99

(4)

PermaTorque Engine Cylinder Head Gasket

“Part was perfect fit.”

from $52.99

(6)

Engine Oil Pan Gasket Set – PermaDryPlus rigid carrier, Oil Pan SnapUps Included

“Very easy to install. Alignment pins are great bonus. They hold the gasket in the exact location.”

from $47.99

(32)

Engine Valve Cover Gasket Set

“OEM replacement”

Popular Melling 1978 Mercury Cougar Engine Parts

Melling auto parts is one of the highest quality Engine Part brands in the market. Any 1978 Mercury Cougar owner should feel confident when installing genuine Melling parts in their vehicle. To ensure the best fit and performance for your 1978 Cougar, Advance Auto Parts carries a full inventory of 3 Melling Engine Parts. Plus you will be keeping your Mercury in peak condition while saving money because prices on these Melling Engine Parts range from $21.49 to $61.99, plus, with more than 13 customer reviews and an impressive 4.3 stars average rating, you can be confident the Fram Engine Parts below will deliver on both quality and value.

from $21.49

(2)

Stock Replacement Type Oil Pump Intermediate Shaft

“CORRECT”

from $46.99

(8)

Stock Replacement OE Type Oil Pump

“Product was a perfect fit top notch at a great price”

from $61.99

(3)

Stock Replacement OE Type Oil Pump

“Good price, readily available”

FAQs for 1978 Mercury Cougar Engine Parts

Which Engine Parts are best-sellers for 1978 Mercury Cougars?

Out of 439 Engine Parts that fit 1978 Mercury Cougars, the following parts are the top sellers:

Engine Valve Lifter (5688671) – $12.99
Rubber Expansion Plug 3/4 In. – Size Range 3/4 In. – 7/8 In. (89014938) – $11.49
PermaTorque Engine Cylinder Head Gasket (5722683) – $35.99

What’s the price range for 1978 Mercury Cougar Engine Parts?

Engine Part prices for the 1978 Mercury Cougar start at $0.43 and go up to $4,078.99 for the most premium parts.

What’s the average price of a Engine Part for a 1978 Mercury Cougar?

The average price for Engine Parts for the 1978 Mercury Cougar is $229.94. Keep in mind the variety of part types within our Engine Part category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Engine Parts for other Mercury Cougar model years?

Yes, we currently carry Engine Parts for 33 model years of Mercury Cougars between 1967 and 2002. Engine Parts are bought most frequently for the following model years: 2002, 2001, 2000, 1999, 1997, 1996, 1995, 1994, and 1993.

What are the cheapest Engine Parts for my 1978 Mercury Cougar?

The cheapest 1978 Mercury Cougar Engine Parts we carry in stock are:

Engine Valve Spring Retainer Keeper (19694179) – $0.43
Engine Rocker Arm Nut (19694259) – $0.72
Steel Cup Expansion Plug 1-1/2 In., Height 0.220 (3492249) – $1.29
Steel Cup Expansion Plug 1/2 In., Height 0.380 (Sold by each) (22140583) – $1.29
Engine Oil Pump Gasket (3203441) – $1.49

What are the top-rated Engine Parts that fit the 1978 Mercury Cougar?

Out of 1,230 reviews by customers, our 1978 Mercury Cougar Engine Parts have an average customer rating of . These are some of the highest-rated Engine Part types for the 1978 Mercury Cougar and their top-rated products:

Valve Cover and Cylinder Heads
- Engine Push Rod (5687144) – $2.49
- Engine Valve Spring Retainer Keeper (19694179) – $0.43
- PermaTorque Engine Cylinder Head Gasket (5184215) – $35.99
Engine Gaskets and Seals
- Engine Push Rod (5687144) – $2.49
- Engine Valve Spring Retainer Keeper (19694179) – $0.43
- PermaTorque Engine Cylinder Head Gasket (5184215) – $35.99

What types of Engine Parts do you sell for my 1978 Mercury Cougar?

As of 3/1/26, these are some of the most in-demand types of Engine Parts for a 1978 Mercury Cougar:

Can I get help with 1978 Mercury Cougar Engine Part orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Mercury Engine Parts and more.

What is your return policy for Mercury Cougar Engine Parts?

Advance Auto Parts keeps returns simple. For new Mercury Cougar Engine Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1978 Mercury Cougar Engine Parts

Felpro – Engine Timing Cover Gasket Set (Part No.TCS 45061)

Competition Cams – Mutha’ Thumpr 235/249 Hydraulic Roller Cam (Part No.32-601-8)

Mr. Gasket – Valve Cover Gasket Set (Part No.274)

Cloyes Performance – High Performance Timing Set (Part No.9-3635X9-10)

Felpro – Engine Crankshaft Seal Kit (Part No.BS 40620)

Sealed Power – Engine Connecting Rod Bearing Set (Part No.4-3545A .25MM)

Dorman – Help – Engine Oil Dipstick: Direct Replacement, Steel (Part No.917-347)

Cloyes Gear – Engine Timing Chain Kit (Part No.9-0387SA)

Cloyes Gear – Engine Timing Crankshaft Sprocket (Part No.S447)

Melling – Stock Replacement OE Type Oil Pump (Part No.M-86E)

Dorman – STD Cylinder Head Bolt, 7/16-14 x 3.938 x 1-1/16 In., Hex 5/8 In. (Sold by each) (Part No.675-131)

Cloyes Gear – Engine Timing Chain (Part No.C708F)

ARP Auto Racing – For Use With Ford Small Block 289/ 302 Cid, 2 Bolt Main, Hex Head, Chrome Moly (Part No.154-5001)

Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-86C)

Competition Cams – HYDRAULIC LIFTER SET, SBFORD 1 ST (Part No.832-16)

National – Shaft Repair Sleeve (Part No.99187)

Sealed Power – Engine Exhaust Valve (Part No.V-1961)

PowerBond – Harmonic Balancer (Part No.PB1530N)

Competition Cams – Magnum Roller 1.6 Ratio Rocker Arm Set (Part No.1431-16)

Edelbrock – Signature Series Valve Covers: Small Block Ford 221-351W 62-95, Chrome Steel (Part No.4460)

Felpro – Engine Gasket Set (Part No.KS 2329)

Felpro – Engine Cylinder Head Bolt Set (Part No.ES 71328)

Mr. Gasket – Chrome Plated Steel Crankshaft Pulley (Part No.8827)

Sealed Power – Engine Rocker Arm Nut (Part No.MR-1823)

Melling – Stock Replacement Engine Assembly Lubricant, 4 oz. (Part No.M-10012)

Driveworks – Oil Seal (Part No.S-2692)

National – Engine Harmonic Balancer Repair Sleeve (Part No.88187)

Cloyes Performance – Engine Timing Set (Part No.C-3057X)

Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7820)

National – Multi-Purpose Seal (Part No.2942)

ARP Auto Racing – For Use With Ford 289/ 302 With Aluminum Timing Cover And Water Pump, Hex Head (Part No.154-1504)

Cloyes Gear – Engine Timing Set (Part No.C-3004K)

Cloyes Gear – Engine Timing Set (Part No.C-3009K)

Cloyes Performance – High Performance Timing Chain (Part No.9-145)

Cloyes Performance – High Performance Timing Set (Part No.9-3521X9)

Cloyes Performance – High Performance Timing Chain (Part No.9-130)

Cloyes Performance – High Performance Timing Chain (Part No.9-149)

Competition Cams – High Energy 218/218 Hydraulic Flat Cam SK-Kit for Ford 351C, 351M-400M (Part No.SK32-221-3)

Cloyes Performance – High Performance Timing Set (Part No.9-3621X9)

Cloyes Performance – High Performance Timing Set (Part No.9-3138-5)

Cloyes Performance – High Performance Timing Set (Part No.9-3138)

INA US – ENGINE TIMING SET (Part No.ZC-C-3057X)

Competition Cams – ENGINE TIMING SET (Part No.2135)

Cloyes Performance – High Performance Timing Chain (Part No.9-133)

Schaeffler – Repair Sleeve (Part No.SR3506)

Dayco – TIMING CHAIN KIT (Part No.KTC1353)

INA US – ENGINE TIMING SET (Part No.ZC-C-3004K)

Cloyes Gear – Engine Timing Camshaft Sprocket (Part No.S436T)

Cloyes Gear – Engine Timing Chain (Part No.C498)

National – Shaft Repair Sleeve (Part No.99187)

Sealed Power – Engine Connecting Rod Bearing (Part No.2600CP 10)

Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-2600A)

Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-2600CP)

Sealed Power – Engine Piston Ring Set (Part No.E-251K 40)

Sealed Power – Engine Piston Ring Set (Part No.E-251K)

Sealed Power – Engine Piston Ring Set (Part No.E-251K 30)

Sealed Power – Engine Crankshaft Main Bearing Set (Part No.4125M)

Sealed Power – Engine Piston Ring Set (Part No.E-251X)

Sealed Power – Engine Piston Ring Set (Part No.E-251X 60)

National – Multi-Purpose Seal (Part No.2692)

Sealed Power – Engine Connecting Rod Bearing (Part No.2600CP)

Sealed Power – Engine Crankshaft Main Bearing Set (Part No.5078M)

Sealed Power – Engine Crankshaft Main Bearing Set (Part No.4125MA)

Sealed Power – Engine Connecting Rod Bearing (Part No.3400CP)

Sealed Power – Engine Connecting Rod Bearing (Part No.2600CP 20)

Sealed Power – Engine Connecting Rod Bearing (Part No.2600A)

Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-3380CPA)

Sealed Power – Engine Piston Ring Set (Part No.E-251X 30)

ARP Auto Racing – For Use With Ford Small Block 289/ 302 Cid, 2 Bolt Main, Hex Head, Chrome Moly (Part No.154-5001)

Sealed Power – Engine Piston Ring Set (Part No.E-251X 40)

Sealed Power – Engine Crankshaft Main Bearing Set (Part No.4125M 10)

Sealed Power – Engine Piston Ring Set (Part No.WE-251K)

Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-2600CP 10)

Edelbrock – Performer RPM Camshaft And Lifter Kit #7122 For Small-Block Ford 289-302 V8 (Part No.7122)

Sealed Power – Engine Valve Lifter (Part No.HT-900)

Sealed Power – Engine Camshaft Bearing Set (Part No.1204M)

Sealed Power – Engine Camshaft Bearing Set (Part No.1403M)

Competition Cams – Thumpr 227/241 Hydraulic Flat Cam (Part No.31-601-5)

Competition Cams – Xtreme Energy 212/218 Hydraulic Flat Cam (Part No.35-234-3)