1978 Mercury Marquis Performance and Racing Products

Below you will find various in-demand Mercury Performance and Racing Products, components and accessories for your 1978 Marquis. Advance Auto Parts has popular Marquis parts like Performance Fuel Systems, Performance Ignition Products, Performance Air Filters and more. You’ll also find aftermarket and OEM Performance and Racing Products for other Marquis model years including 1977, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986 and more. Select a category of 1978 Mercury Marquis Performance and Racing Products below and start saving instantly.

Popular 1978 Mercury Marquis Performance and Racing Products Categories

Performance Carburetors

Performance Engine Coolant Thermostats

Performance Intake Manifolds

Performance Fuel Pumps

Performance Air Filters

Performance Coils

Performance Distributor Cap and Rotor Kits

Performance Shifters

Performance Distributors

Performance Valve Covers

Performance Engine Water Pumps

Performance Water Outlets

Performance Engine Cylinder Head Gaskets

Performance Engine Camshaft and Lifter Kits

Performance Engine Harmonic Balancers

Performance Distributor Components

Performance Engine Intake Manifold Gaskets

Performance Engine Timing Sets and Components

Performance Engine Valve Springs

Performance Engine Valve Cover Gasket Sets

Performance Flywheel and Flexplates

Performance Exhaust Manifold Gaskets

Performance Oil Pans

Performance Differential Cases

Performance Distributor Caps

Performance Engine Rocker Arms

Performance Engine Camshafts

Performance Engine Oil Pan Gaskets

Performance Ring and Pinions

Performance Ignition Parts

Performance Intake Manifold Hardware

Performance Pulleys

Performance Engine Main Bearing Gasket Sets

Performance Transmission Shift Kits

Performance Engine Cylinder Head Bolts

Performance Clutch Pivot Balls

Performance Engine Push Rods

Performance Engine Cylinder Heads

Performance Nitrous Systems

Nitrous Oxide Injection System Kit

Performance Torque Converters

Performance Ignition Systems

Performance Engine Valve Spring Retainer

Essential Performance and Racing Products for 1978 Mercury Marquis

from

$52.99

MSD molds our most popular V8 distributor caps in-house. These caps are injection molded from DuPont? Rynite material and feature spark plug-style terminals. These terminals offer improved locking connections and the Rynite material is extremely strong with excellent dielectric properties. Plus, most caps have an optional wire retainer that is supplied with these caps to lock the wires in place.

Product Features:

Designed w/Performance In Mind
High Quality Material
Stainless Terminals
Performance replacement part

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$28.88

Product Features:

Heavy Duty Cap and Rotor Kit
With Brass Inserts

from

$100.99

Product Features:

Use W/ Valve Springs Part #5822, 5882, 5896, 5872, 5867, 5812, 5857
Set of 16
1.50 in. Outside Diameter
Steel Material
Black Oxide Finish

from

$38.49

Mr. Gasket Harmonic Balancer Bolt for Ford V8 except 351C. Fits 221,260,289,302,351W small block Windsor engines, 332,352,360,390,406,410,427,428 FEs, and 429,460 385 series big blocks. 5/8-18 x 2 inch long heat treated black oxide coated Grade 8 alloy steel with a thick parallel ground washer to provide accurate, uniform torque.

Product Features:

Heat treated black oxide coated Grade 8 alloy steel
Thick parallel ground washer provides more accurate, uniform torque
Hex Prevents Socket Slippage
Accurate And Uniform Torque
Black Plated Finish

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$196.99

Spectre’s Chrome Oil Pans feature a front sump and triple chrome plating. This product is designed to fit Ford passenger cars and 2 wheel drive trucks with 351C, 351M, and 400 engines. This OEM replacement oil pan is manufactured using high quality materials and is engineered for optimum fit and function.

Product Features:

Triple chrome-plated
Steel construction
Front sump
OEM replacement.

from

$49.99

If you are looking to upgrade your stock coil, or want to compliment the performance of your MSD blaster ignition, MSD 5, 6 or 7, the blaster coil line is the right choice. All of the blaster coils are designed for improved spark output. Special 100:1 windings are used to provide maximum build-up of voltage. These windings are held secure and kept cool in an oil filled metal canister. The tower assembly is molded of durable alkyd material due to its high dielectric characteristics while wide spaced brass primary terminals prevent the possibility of spark. There are several versions of the blaster coil available. All of them have the same internal specifications, but have different housings or components. Each blaster coil can be used with a stock ignition, blaster ignition, MSD 5, 6 or 7 ignition control. Most late model vehicles with electronic ignitions do not require a ballast resistor, check your ignition and manufacturers specifications to determine if a ballast is required in your application.

Product Features:

Improved output coil for electronic ignitions
Works w/Blaster Ignition Or MSD 5/6/7 Series
Ballast Resistor Required If Used w/Stock Points Ignition
Alkyd tower w/high dielectric properties lessens carbon tracking

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$49.49

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
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

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$226.99

Product Features:

FORD 9″ EMPTY POSI CASE – 28 & 31 SPLINES

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$89.99

K&N performance High-Flow Air Filters are engineered to improve engine performance. Unlike disposable paper filters which must be frequently replaced, K&N Air Filters are washable, reusable, and engineered to last for the life of your vehicle or outdoor power small engine. Engineered to fit easily into your factory air box, installation can be completed in a matter of minutes! K&N develops and tests each product on the world┐s toughest race tracks, so we can bring the highest level of performance to your daily driving. Join the millions of customers who have saved money and improved vehicle performance by upgrading to K&N filtration.

Product Features:

ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance
RUGGED CONSTRUCTION: K&N Air Filters are manufactured with durable, premium materials and state-of-the-art construction methods to last a lifetime
4 LAYERS OF PROTECTION: Multiple layers of premium cotton gauze treated with a specially-designed tacking agent work together to create an intricate mesh of engine filter media that is designed to block and trap harmful contaminants
CLEAN ONCE EVERY 5 YEARS: Engine air filter only needs cleaning every 75,000 miles under normal highway driving conditions (based on the average miles driven per year of 15,000 miles)
ULTIMATE LONGEVITY: No-hassle lifetime warranty on stock replacement K&N air filters- limitations apply
EASY INSTALLATION: K&N Air Filters are pre-treated and ready to drop into your factory air box- they are one of the easiest and most cost-effective vehicle upgrades for quick performance gains
ECO-FRIENDLY: Using a washable, reusable engine air filter helps reduce replacement air filter waste- a K&N air filter is designed to last longer than 10 or more disposable filters
MADE IN USA: K&N Air Filters are proudly made in the USA for trusted quality & reliability

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$349.99

A higher than stock stall speed as delivered by a B&M Converter will provide several advantages. The high stall converter allows the engine to launch the car at a higher RPM where more torque is available and increased strength.

Product Features:

New Precision Pump Drive Tube
Pressure Tested
Fully Balanced
Needle Thrust Bearing
New Thrust Washer

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$30.49

Product Features:

Service Part
Makes Connections Quick And Easy

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$45.99

Designed to allow additional adjustment of the clutch fork height to eliminate clutch release problems when installing a high performance clutch. Recommended for use with Lakewood safety bell housings. Available for most GM, Ford, and Mopar applications. Adjustable dowel pins correct for improper register bore alignment of bell housing.

Product Features:

Allows Additional Adjustment
Eliminates Clutch Release Problems

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$81.99

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

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$152.99

As performance levels increase, an O.E. style flexplate just won’t cut it and a stronger option is a necessity to prevent transmission and/or converter failure. B&M has you covered with our high performance flexplate designed for Ford, Lincoln and Mercury (internally balanced) 289-351ci small block V8 engines with C4 transmission. Features include high tensile strength steel construction to resist elongation and cracking, 10.50 inch bolt pattern and 157 tooth ring gear. B&M flexplates are ideal for hot rods, street cars, tow vehicles or other vehicles needing the added protection and toughness that B&M has been delivering since 1953.

Product Features:

NHRA/IHRA Legal For All Classes
Includes SFI Certification Sticker
Ideal For Street Applications
To Extreme Duty Racing
To High RPM Use

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$64.99

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

Product Features:

Triple Groove
Chrome Plated
Diameter: 5.90″

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$13.29

Chrome plated steel. Includes hold-down bolt or stud. Holds the distributor in place for accurate timing. Serrated bottom prevents the distributor from turning.

Product Features:

Rolled Edges For Strength
Ideal For Magnetos
Ideal For Ignition Distributor

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$48.09

Precision die cast, these water necks or thermostat housings are first polished to a high luster, then chrome plated. Comes with gasket and Allen head mounting bolts. Fits 1979-1997 Ford 5.0/5.8L V8s.

Product Features:

Chrome Plated For Great Looks
Includes Gasket & Mounting Bolts

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$724.99

The Edelbrock Performer Nitrous Plate System #70001 is designed to increase your power from 50-100 horsepower. Edelbrock Nitrous systems are simple to install with a 1/2″ thick aluminum plate that fits between the carburetor and the intake manifold. Edelb

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$46.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Rigid core, molded silicone rubber gaskets provide for ease of installation, and are great for on-again/off-again situations (like setting valve lash).
Features high-tech silicone material for long life, a solid steel core for strength and durability, and stainless steel compression limiters to prevent
Not intended for use in emission controlled vehicles.

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$39.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Fel-Pro performance intake manifold gaskets have been tested with virtually all aftermarket cylinder head and intake manifold combinations.
Performance intake manifold gaskets designed without a metal core, to allow engine builders to trim the gasket for exact fit on modified ports.
1970-82; w/2 Bbl. Cylinder heads
Printoseal elastomeric sealing beads to provide extra sealing strength around the intake port.
Not intended for use in emission controlled vehicles.

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$597.99

Edelbrock part #21813 Performer 351W intake manifold is designed for street 351 c.i.d. Ford Windsor V8’s. Will not fit Boss 351. Aftermarket 4-bbl carbs are not compatible with Ford Auto Overdrive Transmission (AOD) unless used with Lokar bracket SRK-4000

Product Features:

Idle-5500 RPM Range
Dual Plane Type-4150 Style Flange
3.4 in. Front Height, 4.07 in. Center Height, 4.75 in. Rear Height
Black Powder Coated Finish
Made In The USA

from

$208.99

Edelbrock part #9655 Pushrods are designed for small-block Ford 289-302 V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precis

Product Features:

6.4 in. Length
0.312 in. Diameter
4130 Chromoly Steel Material
Black Oxide Finish
Made In The USA

from

$165.99

Mechanical fuel pump made from heavy duty construction for continuous high RPM operation. Fuel body casting can be rotated to accommodate various plumbing situations. Fuel pressure regulator is not required.

Product Features:

High Output Fuel Flow
Flows 110 gph Free Flow
Shutoff Pressure Pre-Set From 6.5 To 8 PSI
Fuel Pressure Regulator Is Not Required
Heavy Duty Construction For Continuous High rpm Operation
Fuel Body Casting Can Be Rotated For Plumbing Situations
Inlet And Outlet Tapped For 3/8 in. NPT
Inlet/Outlet Tapped For 3/8 in. NPT

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$369.99

RngPnn

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$85.99

The Edelbrock #4463 Signature Series Valve Covers are designed for Ford 429/460 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:

Big Block Ford 428-460
Short
Chrome Steel
Set Of Two
Rubber Grommets For Breather

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$26.99

Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:

Opens At 180 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

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$875.99

Product Features:

Designed For Carbureted V8s
Power Increases From 100-250 HP
Precision EDM Machined Spray Bars
Simple To Install

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$237.99

The COMP Cams High Energy Die-Cast Aluminum Roller Rocker Arms are new rocker arms from the valve train leader that have been designed for street and moderate race use. They feature a die-cast body created from aluminum with a needle bearing fulcrum and roller tip. The die-cast, larger than stock body offers the strength properties and light weight of aluminum while the specially engineered fulcrum and roller tip decrease friction and lower oil temperatures, thus improving response and horsepower.

Product Features:

Cost effective aluminum construction provides superior strength to weight ratio
Needle bearing fulcrum and roller tip reduce friction and lower oil temperatures for improved response and horsepower
Durable design increases valve lift while withstanding the rigors of moderate race use
Die-formed aluminum body is larger than stock, and may require modifications to stock valve covers for clearance.

Upgrade your 1978 Mercury Marquis with Top-Quality Performance and Racing Products

When it comes to maintaining or upgrading your 1978 Mercury Marquis, 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, Performance and Racing Products are key to keeping your Marquis functioning at its best. At Advance Auto Parts, we offer a wide selection of 151 Performance and Racing Products for the 1978 Mercury Marquis, designed to meet your needs without breaking the bank. From Performance Fuel System replacements to Performance Ignition Products 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 Performance and Racing Products for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Performance and Racing Products for your 1978 Mercury Marquis at great prices. Our Performance and Racing Products inventory for this model ranges from just $16.49 to $1,138.99, with an average price of $336.25. Our 151 Performance and Racing Products in stock come from 17 trusted brands, so you’re sure to find the right part for your 1978 Mercury Marquis 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 Marquis, we stock popular OEM and aftermarket Performance and Racing Products from top names like Accel, Mr. Gasket, Edelbrock, and more. Accel Performance and Racing Products start at just $24.88 and boast an impressive 4 stars average rating from customers. Mr. Gasket and Edelbrock also bring quality to the table, with Performance and Racing Products available starting at $16.49, and at an average 4 stars rating. With 828 customer reviews and counting, our 1978 Mercury Marquis Performance and Racing Products 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 Performance and Racing Product upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 1978 Mercury Marquis is always ready to roll. We’re committed to providing you with everything you need to keep your Marquis in top shape, all in one place. Start shopping confidently below for your 1978 Mercury Marquis!

Best-Selling Performance Fuel Systems for 1978 Mercury Marquis

Enhance the driving experience in your Mercury with 13 quality Performance Fuel System components, starting at $16.49.

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from

$494.99

The Edelbrock 1411 Performer Series 750 CFM electric choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characterist

Product Features:

Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. ‘Proven performance’ is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quali
Electric Choke
4 Barrel Count
Square Bore
Smooth Secondary Transition
Both Timed and Full Vacuum Ports
Includes PCV Outlet

from

$488.99

Product Features:

EnduraShine Finish
GM/AMC-Style Throttle Linkage
Can Add Electric Choke PN[1478]
Easy Tuning with 2-Piece Design
Smooth Secondary Transition
Both Timed and Full Vacuum Ports
Includes PCV Outlet

from

$428.99

The Edelbrock 1406 Performer Series 600 CFM electric choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the 1406 Performer Series 600 CFM electric choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to “hold a tune”, so once it is tuned, the carburetor stay’s tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that’s reliable, user-friendly and is easily tunable for miles and miles of trouble-free operation.

Product Features:

Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. ‘Proven performance’ is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quali
Electric Choke
4 Barrel Count
Square Bore
Smooth Secondary Transition
Both Timed and Full Vacuum Ports
Includes PCV Outlet

from

$394.99

The Edelbrock 1405 Performer Series 600 CFM manual choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the 1405 Performer Series 600 CFM manual choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to “hold a tune”, so once it is tuned, the carburetor stay’s tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that’s reliable, user-friendly and is easily tunable for miles and miles of trouble-free operation.

Product Features:

Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. ‘Proven performance’ is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quali
Manual Choke
4 Barrel Count
Square Bore
Smooth Secondary Transition
Both Timed and Full Vacuum Ports
Includes PCV Outlet

from

$451.99

The Edelbrock 1407 Performer Series 750 CFM manual choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristic

Product Features:

Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. ‘Proven performance’ is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quali
Manual Choke
4 Barrel Count
Square Bore
Smooth Secondary Transition
Both Timed and Full Vacuum Ports
Includes PCV Outlet

from

$165.99

High Output Fuel Flow
Flows 110 gph Free Flow
Shutoff Pressure Pre-Set From 6.5 To 8 PSI
Fuel Pressure Regulator Is Not Required
Heavy Duty Construction For Continuous High rpm Operation
Fuel Body Casting Can Be Rotated For Plumbing Situations
Inlet And Outlet Tapped For 3/8 in. NPT
Inlet/Outlet Tapped For 3/8 in. NPT

from

$16.49

Block-off plates are precision cut to cover stock fuel pump openings. Gasket included.

Product Features:

Chrome Plated Steel
Gasket Included
Easy Installation

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$181.99

High Output Fuel Flow
Flows 110 gph Free Flow
Shutoff Pressure Pre-Set From 6.5 To 8 PSI
Fuel Pressure Regulator Is Not Required
Heavy Duty Construction For Continuous High rpm Operation
Fuel Body Casting Can Be Rotated For Plumbing Situations
Inlet And Outlet Tapped For 3/8 in. NPT
Inlet/Outlet Tapped For 3/8 in. NPT

from

$221.99

High Output Fuel Flow
Flows 130 gph Free Flow
Shutoff Pressure Pre-Set From 7.5 To 9 PSI
Fuel Pressure Regulator Required
Heavy Duty Construction For Continuous High rpm Operation
Fuel Body Casting Can Be Rotated For Plumbing Situations
Redesigned High Flow Valves Ensure Adequate Fuel Delivery
Inlet And Outlet Tapped For 3/8 in. NPT

from

$541.99

Product Features:

EnduraShine Finish
GM/AMC-Style Throttle Linkage
Electric Choke Installed from Factory
Easy Tuning with 2-Piece Design
Smooth Secondary Transition
Both Timed and Full Vacuum Ports
Includes PCV Outlet

from

$538.99

The Edelbrock 1412 Performer Series 800 CFM manual choke carburetor is a precisely tuned, quality-built carburetor that can handle the rigors of daily driving while delivering consistent, reliable street performance from day to day. Several characteristics make the 1412 Performer Series 800 CFM manual choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires, which means that there are no power valves to blow out, and the rods can be changed in seconds without carburetor removal or fuel draining. Secondly, the carburetor has the unique ability to “hold a tune”, so once it is tuned, the carburetor stay’s tuned. What this means to you is that compared to other carburetors, the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with gasohol and blended fuels. The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that’s reliable, user-friendly and is easily tunable for miles and miles of trouble-free operation. Dyno tests proved that the EPS 800 carb outperformed a Holley #3310 carb out-of-the-box by 26 ft-lbs. of torque and 22 hp on a small-block Chevy engine equipped with an Edelbrock Performer RPM power package

Product Features:

Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. ‘Proven performance’ is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quali
Manual Choke
4 Barrel Count
Square Bore
Smooth Secondary Transition
Both Timed and Full Vacuum Ports
Includes PCV Outlet
Can Easily Calibrate with Rods and Jets

from

$413.99

Product Features:

Satin Finish
4 Barrel
Aluminum Body Material
Manual Choke Type
800 cfm Maximum Flow Rating

from

$407.99

Product Features:

Satin Finish
4 Barrel
Annular Booster Type
Manual Choke Type
750 cfm Maximum Flow Rating

Most Popular 1978 Mercury Marquis Performance Ignition Products

Customize your Mercury with 7 Performance Ignition Products products like Performance Coils, Performance Ignition Parts, and Performance Ignition Systems, all priced under $593.99.

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from

$85.29

Mallory’s UNILITE (R), and magnetic breaker less ignition modules are self contained module assemblies which have no moving parts to wear out. Using Mallory’s time tested breaker less ignition circuit, combined with modern surface mount thermal-clad construction, these ignition modules can drive both OEM and high performance ignition coils. For best results always use a Mallory PROMASTER coil or a Mallory chrome electronic ignition coil. These are also an excellent choice for triggering one of the Mallory HyFire series of electronic ignition controls. Hookup is as easy as a three wire connection.

Product Features:

Service Part
No Moving Parts To Wear Out
Self Contained Unit
Can Drive OEM
Can Drive High Performance Ignition Coils

from

$42.49

Excellent high performance replacement for import and domestic vehicles with canister type oil filled coil. Re-engineered windings for even higher energy output resulting in quicker starting improved throttle response and more high RPM power. Designed to work with Points style and Breakerless electronic ignition systems. Heavy duty black Alkyd tower provides in flashover in protection to primary terminals. ACCEL Yellow can. 42000 volts effective up to 6500 RPM 1.4 ohms on the primary

Product Features:

42000 Volts
Effective To 6500 RPM
Quicker Starting
Improved Throttle Response
Higher RPM Power
Can Finished In Yellow

from

$105.99

Engineered for faster rise time, longer spark duration and increased performance. Unique design with premium grade wire, special low resistance, high turns ratio windings. Produces higher spark energy with breakerless electronic ignition systems. For points application the supplied 0.85 ohm ballast resistor must be used in conjunction with the vehicle original ballast resistor, if so equipped. Oversized molded case with integral cooling fins and high capacity oil filled construction provide high thermal conductivity ensuring cool operation and long life. Extra tall tan Alkyd tower and integral voltage dam eliminate “flashover” to primary terminals. Comes complete with mounting hardware and 0.85 ohm ballast resistor. Effective up to 6,500 RPM.

Product Features:

Oil Filled For Better Cooling
Optimized Low Resistance
Silicon Magnetic Steel E-Core
Higher Energy/Voltage Outputs
Quicker Starts
Improved Idle Quality
Resists Shock And Vibration
Resists Corrosion

from

$30.49

Product Features:

Service Part
Makes Connections Quick And Easy

from

$593.99

For a long time, racers have known that one of the best things to do to an engine to improve its performance is to stabilize the ignition timing. The MSD flying magnet crank trigger system does exactly that by using magnets embedded in an aluminum wheel. The MSD flying magnet crank trigger uses four magnets secured in the aluminum trigger wheel that pass by a stationary non-magnetic pick-up to trigger the ignition. This flying magnet design produces accurate trigger signals and the non-magnetic pick-up cannot be false triggered. Each flying magnet crank trigger includes a two-piece mounting bracket for the non-magnetic pick-up that in most cases will work on either the passenger side or driver’s side of the engine (the SB Chrysler and SB Ford brackets mount on only one side). The adjustable bracket provides a wide range of timing adjustment and spacers are included. These systems will trigger MSD 6, 7, 8 and 10 series ignitions and all MSD timing accessories.

Product Features:

Absolutely The Most Accurate Way To Trigger The Ignition
The non-magnetic pickup cannot be false triggered.
Powerful magnets are embedded in a billet aluminum trigger wheel.
Incl. brackets/mounting hardware to fit a variety of engines

from

$538.99

Absolutely the most accurate way to trigger the ignition
The non-magnetic pickup cannot be false triggered.
Powerful magnets are embedded in a billet aluminum trigger wheel.
Incl. brackets/mounting hardware to fit a variety of engines

from

$186.99

Universal street and strip. For street-driven vehicles with breaker point ignition or OE electronic ignition. Delivers optimum performance when used with these Mallory ignition products: UNILITE (R) distributor with a HYFIRE (R) capacitive discharge ignition, magnetic breaker less distributor with a HYFIRE (R) capacitive discharge ignition, or dual point distributor. Effective to approximately 6500 RPM when used with a point type distributor (depending on engine combination). Effective to approximately 8000 RPM when used with a Mallory HYFIRE electronic ignition control (depending on engine combination).

Product Features:

Glass Filled Polyester Case
Longer Spark Duration
Increased Performance
No Energy Loss Due To Arcing
Includes Brass Contact Terminal

Top Picks for 1978 Mercury Marquis Performance Air Filters

Upgrade Mercury Marquis with top-quality Performance Air Filters parts, including 1 OEM and aftermarket selections for your 1978 model.

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from

$89.99

ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance
RUGGED CONSTRUCTION: K&N Air Filters are manufactured with durable, premium materials and state-of-the-art construction methods to last a lifetime
4 LAYERS OF PROTECTION: Multiple layers of premium cotton gauze treated with a specially-designed tacking agent work together to create an intricate mesh of engine filter media that is designed to block and trap harmful contaminants
CLEAN ONCE EVERY 5 YEARS: Engine air filter only needs cleaning every 75,000 miles under normal highway driving conditions (based on the average miles driven per year of 15,000 miles)
ULTIMATE LONGEVITY: No-hassle lifetime warranty on stock replacement K&N air filters- limitations apply
EASY INSTALLATION: K&N Air Filters are pre-treated and ready to drop into your factory air box- they are one of the easiest and most cost-effective vehicle upgrades for quick performance gains
ECO-FRIENDLY: Using a washable, reusable engine air filter helps reduce replacement air filter waste- a K&N air filter is designed to last longer than 10 or more disposable filters
MADE IN USA: K&N Air Filters are proudly made in the USA for trusted quality & reliability

In-Demand Performance Exhaust Products for 1978 Mercury Marquis

Select from 4 premium Performance Exhaust Products parts for your 1978 Mercury Marquis, with prices ranging from $27.99 to $45.99.

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$29.49

Manufactured from high-temperature composite exhaust material. Provides maximum torque retention to eliminate gasket failure. Can be trimmed if necessary for modified port applications. Precision die cut for an excellent fit. For OE replacement, high-performance street, drag race and oval track.

Product Features:

High-Temperature Exhaust Material
Withstands Extreme Exhaust Heat
Excellent Sealing Durability And Torque Retention
Superior Tensile Strength

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$27.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Performance exhaust header gasket consisting of a high-density fiber facing material attached to both sides of a perforated steel core.
Resists blowout and burnout from high-temperature exhaust and is far stronger than basic paper gaskets.
Anti-stick coating permits motion without damaging the gasket and makes it easier to remove the gasket for future engine service.
Slotted bolt holes allow for easier header installation.
Not intended for use in emission controlled vehicles.

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$45.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Performance exhaust header gasket consisting of a high-density fiber facing material attached to both sides of a perforated steel core.
Resists blowout and burnout from high-temperature exhaust and is far stronger than basic paper gaskets.
Anti-stick coating permits motion without damaging the gasket and makes it easier to remove the gasket for future engine service.
Slotted bolt holes allow for easier header installation.
Not intended for use in emission controlled vehicles.

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$45.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Performance exhaust header gasket consisting of a high-density fiber facing material attached to both sides of a perforated steel core.
Resists blowout and burnout from high-temperature exhaust and is far stronger than basic paper gaskets.
Anti-stick coating permits motion without damaging the gasket and makes it easier to remove the gasket for future engine service.
Slotted bolt holes allow for easier header installation.
Not intended for use in emission controlled vehicles.

Most Sold 1978 Mercury Marquis Performance Engines

Explore our best-selling Mercury parts for the 1978 Marquis among 75 OEM and aftermarket options starting from $19.99.

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$33.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

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

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$46.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Rigid core, molded silicone rubber gaskets provide for ease of installation, and are great for on-again/off-again situations (like setting valve lash).
Features high-tech silicone material for long life, a solid steel core for strength and durability, and stainless steel compression limiters to prevent
Not intended for use in emission controlled vehicles.

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$42.99

Ultra-Seal intake manifold gaskets are manufactured from cellulose/nitrile composition gasket material. Provides excellent sealing and durability. Incorporates Silicone beading around each intake and water outlet port to provide additional sealing strength on both sides of each gasket. No gasket sealer required. For OE replacement, high performance street, drag race and oval track use. Includes manifold end seals.

Product Features:

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Silicone beading on both sides of each gasket
Complete with manifold end seals
For OE replacement, high performance street, drag race and oval track use
Creates Tight Leak proof Seal

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$51.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
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

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$36.49

Ultra-Seal is Mr. Gasket premium valve cover gasket material. It’s manufactured from a high density cork and rubber blend with a black latex coat applied to the outside to help seal minor flange irregularites and eliminate oil leakage. It creates a positive seal by controlled swelling of the gasket material when exposed to hot oil. For original equipment replacement, high performance street, drag race and oval track use. Sold as a pair. These gaskets are .187 inch thick.

Product Features:

Manufactured from high-density cork /rubber blend gasket material
A black latex rubber coating is applied to outside of gasket to help seal minor flange irregularities and eliminate the possibility of oil leakage
Creates a positive seal by controlled swelling of the gasket material when exposed to hot engine oil
For OE replacement, high performance street, drag race and oval track
.187″ thick
Handles Ex Flange Pressure
Forms Leak Proof Seal
Black Latex Coating

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$26.99

Opens At 180 Degrees
Designed to Resist Large Variations of Coolant Pressure at High RPM
Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
For High Performance Street, Drag Race, and Oval Track
Copper & Brass Construction – Resists Corrosion
High Flow

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$349.99

New Everbright(TM) Manifold coating now available on the most popular Weiand and Holley intakes uses proprietary vacuum metalizing technology combined with a protective clear powdercoat to provide long lasting, virtually maintenance free polished looks.

Product Features:

Low Rise/Dual Plane Design For Maximum Torque
Permanent Mold Casting Process
Lighter/Smoother/Better Looking/Consistent Casting
Dyno Proven To Make 25hp Over Competition
Fully CNC Machined For A Perfect Fit
Square Bore Carburetor Flange
Exhaust Crossover For Improved Street Drivability

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$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

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$19.99

These grade 5 hex head bolts are brite zinc plated for protection and appearance. Hardened flat washers provide uniform torque & prevent galling on aluminum manifolds. Includes twelve (12) 5/16 inch-18 x 2 inch bolts & washers

Product Features:

Hex Head
Zinc Plated
Ideal For Minimal Space
12-Point Head And Flange
Zinc Plated For Protection

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$237.99

Cost effective aluminum construction provides superior strength to weight ratio
Needle bearing fulcrum and roller tip reduce friction and lower oil temperatures for improved response and horsepower
Durable design increases valve lift while withstanding the rigors of moderate race use
Die-formed aluminum body is larger than stock, and may require modifications to stock valve covers for clearance.

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$111.99

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

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$67.99

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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$38.49

Heat treated black oxide coated Grade 8 alloy steel
Thick parallel ground washer provides more accurate, uniform torque
Hex Prevents Socket Slippage
Accurate And Uniform Torque
Black Plated Finish

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$40.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

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

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$30.19

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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$30.49

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
With steel core to provide ultimate excellent blowout resistance.
Not intended for use in emission controlled vehicles.

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$27.49

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Felcoid/Plus gaskets have a fiber sheet core and a latex rubber coating to eliminate potential leakage paths. The core material resists crushing and splitting, while providing excellent blowout resistance.
With steel core to provide ultimate excellent blowout resistance.
Not intended for use in emission controlled vehicles.

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$39.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Fel-Pro performance intake manifold gaskets have been tested with virtually all aftermarket cylinder head and intake manifold combinations.
Performance intake manifold gaskets designed without a metal core, to allow engine builders to trim the gasket for exact fit on modified ports.
1970-82; w/2 Bbl. Cylinder heads
Printoseal elastomeric sealing beads to provide extra sealing strength around the intake port.
Not intended for use in emission controlled vehicles.

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$38.49

Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. This is a low density material that conforms well to irregular surfaces and has very good crush resistance at high flange pressures. They provide excellent sealing and durability as the material is designed for sealing gasoline, oils, water and coolant in applications up to 350 degrees Fahrenheit. While die-cut for an excellent fit, they can be trimmed if necessary for modified port applications. Comes complete with front & rear manifold end seals. For original equipment replacement, high performance street, drag race and oval track.brbrFits all Ford 351M/400 – 4V or 4-Barrel heads.

Product Features:

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Die-cut for an excellent fit
Can be trimmed if necessary for modified port applications
Complete with manifold end seals
For OE replacement, high performance street, drag race and oval track use

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$42.49

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

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$25.49

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Die cut silicone rubber gaskets conform to out-of-flat covers
Great for on-again/off-again situations
Not intended for use in emission controlled vehicles.

from

$397.99

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 deg. Firing Order
Patented Runner Design Ensures Broad Torque Curve
Excellent Throttle Response and Mid-Range Power
Accepts Late-Model Choke; Waterneck; and HEI
Accepts A/C And Alternator
Accepts Exhaust Heated Chokes

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$49.49

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
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

$58.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
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

$34.99

Product Features:

Valve Cover Gasket

from

$81.99

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

from

$421.99

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 deg. Firing Order
Patented Runner Design Ensures Broad Torque Curve
Excellent Throttle Response and Mid-Range Power
50-State Street Legal if Correct Carburetor Used

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$110.99

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

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$49.99

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Fluoroelastomer compound combines optimum resistance to heat, oils and abrasion for longivity.
Optimizes performance under high crankcase vacuum conditions, elevated temperatures and high RPM levels.
Not intended for use in emission controlled vehicles.

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$54.99

Spectre’s Ford V8 water neck fits Ford 429 – 460 engines. This water neck has been designed around the OEM specifications and has a chrome plated finish for a lasting look that fits great. This water neck includes sealing O-ring, and has a 3/8 inch NPT threaded hole for the Ford temp sensor.

Product Features:

Fits Ford 429 – 460 engines
Has a 3/8 inch NPT threaded hole for temperature sensor
Includes sealing O-ring
Chrome plated
Easy to install
Hardware not included

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$41.49

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

from

$30.49

Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:

Blue Stripe performance cork-rubber gaskets use cork particles evenly distributed throughout a rubber binder resulting in a compressible gasket without leak paths.
Not intended for use in emission controlled vehicles.

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$87.19

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

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$35.99

Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. This is a low density material that conforms well to irregular surfaces and has very good crush resistance at high flange pressures. They provide excellent sealing and durability as the material is designed for sealing gasoline, oils, water and coolant in applications up to 350 degrees Fahrenheit. While die-cut for an excellent fit, they can be trimmed if necessary for modified port applications. Comes complete with front & rear manifold end seals. For original equipment replacement, high performance street, drag race and oval track.brbrFits 1977-1997 Ford Small Block 351 Windsor 2 or 4-barrel.

Product Features:

Manufactured from cellulose/nitrile composition gasket material
Provides excellent sealing and durability
Die-cut for an excellent fit
Can be trimmed if necessary for modified port applications
Complete with manifold end seals
For OE replacement, high performance street, drag race and oval track use

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$1035.99

50 state street legal aluminum cylinder head. Out-of-the-box bolt-on performance. Intake valves are used for stock pistons.

Product Features:

50-State Street Legal Aluminum Cylinder Head
Out-of-the-Box Bolt-On Performance
Intake Valves Are For Use w/Stock Pistons

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$966.99

50 state street legal aluminum cylinder head. Out-of-the-box bolt-on performance. Intake valves are used for stock pistons.

Product Features:

50-State Street Legal Aluminum Cylinder Head
Out-of-the-Box Bolt-On Performance
Hand-Blended Intake and Exhaust Bowls
CNC-Matched Intake/Exhaust Ports in Std Location
Thicker Deck Surfaces than Other Brands
Heli-Coils in Rocker Studs and Exhaust Bolt Holes

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$893.99

Product Features:

Made of aluminum with a natural finish
60cc chambers with 170cc intake ports
2.02 in. intake and 1.60 in. exhaust valves
Includes intake valves, exhaust valve, valve springs, retainers, locks, guide plate and valve stem seals
Does not include damper spring, rocker arms, nuts and drilled steam holes

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$772.99

Based on performer RPM-series with unique air gap. Air gap cooler and denser mixture for more power. Designed for 1500 to 6500 RPM. Improve performance on the street or race track. Larger cross-sectional area and taller card flange. Compatibility with lar

Product Features:

Based on Performer RPM-Series with Unique Air Gap
Air Gap Cooler and Denser Mixture for More Power
Designed For 1500 To 6500 RPM
Designed For Street And High Performance
Larger Cross Sectional Area
Taller Carb Flange
Compatibility w/Large Displacement 351W Based Eng.

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$692.99

50 state street legal aluminum cylinder head. Out-of-the-box bolt-on performance. Intake valves are used for stock pistons.

Product Features:

50-State Street Legal Aluminum Cylinder Head
Out-of-the-Box Bolt-On Performance
Intake Valves Are For Use w/Stock Pistons

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$597.99

Idle-5500 RPM Range
Dual Plane Type-4150 Style Flange
3.4 in. Front Height, 4.07 in. Center Height, 4.75 in. Rear Height
Black Powder Coated Finish
Made In The USA

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$526.99

3) For off-highway use, non-EGR 4V system with an Edelbrock #8714 4V spacer.

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Dual-Plane Low-Rise Intake w/180 deg. Firing Order
Patented Runner Design Ensures Broad Torque Curve
Excellent Throttle Response and Mid-Range Power
50-State Street Legal if Correct Carburetor Used
Accepts Late-Model Choke And Waterneck

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$526.99

Maximum cooling for street and racing engines. Internal passages are balanced for maximum flow. Impeller is larger than others for maximum pressure. Impeller vanes dramatically increase flow rates. Equal distribution to both sides of block. Only flows in one direction for optimum efficiency. In the early days of the automotive performance industry, you either ran what was available, or you fabricated something you thought met your needs. Such needs were the building blocks of this industry, and it was through the efforts of many that we have the automotive aftermarket, but it was through the work of one name in particular to which many in the industry owe a great debt, and that name is Edelbrock.

Product Features:

Maximum Cooling for Street and Racing Engines
Internal Passages Are Balanced for Maximum Flow
Impeller is Larger than Others For Max Pressure
Impeller Vanes Dramatically Increase Flow Rates
Equal Distribution to Both Sides of Block
Only Flows in One-Direction for Optimum Efficiency

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$522.99

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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$522.99

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

$473.99

2500-6500 RPM high-performance street engines. Single-plane low-rise intake good for high RPM. Ideal for applications with limited hood clearance. For top-end HP and adequate throttle response. Available in cast or polished.

Product Features:

2500 to 6500 RPM High Performance Street Engines
Single-Plane Low-Rise Intake Good for High RPM
Ideal for Applications with Limited Hood Clearance
For Top-End HP and Adequate Throttle Response

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$468.99

Based on Performer RPM-Series with Unique Air Gap
Air Gap Cooler and Denser Mixture for More Power
Designed For 1500 To 6500 RPM
Designed For Street And High Performance
Larger Cross Sectional Area
Taller Carb Flange
Compatibility w/Large Displacement 351W Based Eng.

from

$427.99

These COMP Cams Ultra-Gold Aluminum Roller Rocker Arms with a 3/8″ stud diameter and 1.6 ratio are designed for Ford V8 289-302-351W applications. The new modern design features of these Ultra-Gold Rockers are proven to withstand extremely aggressive spring pressure and valve lift. Designed specifically for high performance street and race engines, the Ultra-Gold Aluminum Rocker Arms are precision CNC-machined to strict tolerances. Developed to meet the demands of professional engine builders, these rockers include features never before possible in an aluminum rocker arm.

Product Features:

CNC-machined, lightweight design removes weight and yields unrivaled quality and ratio accuracy
Designed for high performance street and race engines
Precision-sorted trunion bearings withstand elevated valve spring pressure and valve lift
Additional clearance, up to 1.650″ O.D. valve spring

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$426.99

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.

Top-Rated Performance and Racing Products Brands For Your 1978 Mercury Marquis

Shop for the best-rated brands offering Performance and Racing Products and other products for your 1978 Mercury Marquis. Below you’ll find some of our best rated Performance and Racing Products from Accel, Mr. Gasket, and Edelbrock, and more. Performance and Racing Products from these brands that fit a 1978 Marquis start at just $16.49 and are rated as high as 4 stars. OEM and aftermarket Performance and Racing Products don’t get more top quality, durable, and affordable than from the brands below.

Popular Accel 1978 Mercury Marquis Performance and Racing Products

When it comes to maintaining or upgrading your 1978 Mercury Marquis, using quality Performance and Racing Products is essential to ensure durability and a perfect fit. Accel ticks all of those boxes. We offer a wide selection of Accel Performance and Racing Products, specifically designed for the 1978 Mercury Marquis. With over 4 Accel brand Performance and Racing Products in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $24.88, with an average price of just $50.56. Plus, with over 54 customer reviews and an average rating of 4 stars, you can trust that our Accel Performance and Racing Products will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from
$24.88

This product is not rated

Distributor Cap And Rotor Kit

“”

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$28.88

This product is not rated

Distributor Cap And Rotor Kit

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$105.99

This product is not rated

Supercoil

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Popular Mr. Gasket 1978 Mercury Marquis Performance and Racing Products

Mr. Gasket auto parts is one of the highest quality Performance and Racing Product brands in the market. Any 1978 Mercury Marquis owner should feel confident when installing genuine Mr. Gasket parts in their vehicle. To ensure the best fit and performance for your 1978 Marquis, Advance Auto Parts carries a full inventory of 18 Mr. Gasket Performance and Racing Products. Plus you will be keeping your Mercury in peak condition while saving money because prices on these Mr. Gasket Performance and Racing Products range from $16.49 to $110.99, plus, with more than 27 customer reviews and an impressive 4 stars average rating, you can be confident the Fram Performance and Racing Products below will deliver on both quality and value.

from
$38.49

This product is not rated

Ultra Seal: Harmonic Balancer Bolt/Washer Kit

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$30.19

This product is not rated

Valve Cover Gasket Set

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$16.49

This product is not rated

Fuel Pump Block-Off Plate

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FAQs for 1978 Mercury Marquis Performance and Racing Products

Which Performance and Racing Products are best-sellers for 1978 Mercury Marquis?

Out of 151 Performance and Racing Products that fit 1978 Mercury Marquis, the following parts are the top sellers:

Super Stock Replacement Coil for Improved Performance, Starting, and Power (5024269) – $42.49
High Performance 180 Degree Thermostat for Increased Flow (17360033) – $26.99
Lower Intake Manifold Gasket Set: 11 Piece Set (5991277) – $33.99

What’s the price range for 1978 Mercury Marquis Performance and Racing Products?

Performance and Racing Product prices for the 1978 Mercury Marquis start at $16.49 and go up to $1,138.99 for the most premium parts.

What’s the average price of a Performance and Racing Product for a 1978 Mercury Marquis?

The average price for Performance and Racing Products for the 1978 Mercury Marquis is $336.25. Keep in mind the variety of part types within our Performance and Racing Product category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Performance and Racing Products for other Mercury Marquis model years?

Yes, we currently carry Performance and Racing Products for 19 model years of Mercury Marquis between 1967 and 1986. Performance and Racing Products are bought most frequently for the following model years: 1986, 1985, 1984, 1983, 1982, 1981, 1980, 1979, and 1977.

What are the cheapest Performance and Racing Products for my 1978 Mercury Marquis?

The cheapest 1978 Mercury Marquis Performance and Racing Products we carry in stock are:

Fuel Pump Block-Off Plate (22904445) – $16.49
Intake Manifold Bolts (17360287) – $19.99
Differential Pinion Solid Spacer Kit w/Shims (19640050) – $22.79
Distributor Cap And Rotor Kit (6900291) – $24.88
Engine Valve Cover Gasket Set (5189756) – $25.49

What are the top-rated Performance and Racing Products that fit the 1978 Mercury Marquis?

Out of 828 reviews by customers, our 1978 Mercury Marquis Performance and Racing Products have an average customer rating of . These are some of the highest-rated Performance and Racing Product types for the 1978 Mercury Marquis and their top-rated products:

Performance Air Filters
- Engine Air Filter: Washable Filter, Increase Horsepower & Acceleration (17400021) – $89.99

What types of Performance and Racing Products do you sell for my 1978 Mercury Marquis?

As of 2/5/25, these are some of the most in-demand types of Performance and Racing Products for a 1978 Mercury Marquis:

Can I get help with 1978 Mercury Marquis Performance and Racing Product orders?

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

What is your return policy for Mercury Marquis Performance and Racing Products?

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

1978 Mercury Marquis Performance and Racing Products

MSD Ignition – Distributor Cap; Ford HEI (Part No.8408)

Accel – Distributor Cap And Rotor Kit (Part No.8223)

Edelbrock – Performer Series Retainer (Qty 16) (Part No.9724)

Mr. Gasket – Ultra Seal: Harmonic Balancer Bolt/Washer Kit (Part No.7847)

Spectre – Oil Pan (Part No.5490)

MSD Ignition – Blaster 2 Coil: High Performance Ignition Upgrade (Part No.8202)

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1018)

Motive Gear – Differential Carrier (Part No.D3TZ4204A)

K&N – Engine Air Filter: Washable Filter, Increase Horsepower & Acceleration (Part No.E-1570)

B & M – Torque Converter, Tork Master 2000 (Part No.40427)

Mallory – Distributor Wiring Harness (Part No.29349)

Lakewood – Clutch Fork Pivot Ball-Adj:GM (Part No.15501)

Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7821)

B & M – Flexplate (Part No.50246)

Mr. Gasket – Waterpmpply (Part No.8829)

Mr. Gasket – Chrome Distributor Hold-Down Clamp (Part No.9860)

Mr. Gasket – Water Neck (Part No.9713)

Edelbrock – Performer Carb/Plate Nitrous Systems for Square-Bore Carbs (50-75-100 Hp) (Part No.70001)

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1684)

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 7 Piece Set (Part No.1240)

Edelbrock – Performer 351-W Intake Manifold for S/B Ford 351 Windsor, Black Finish (Part No.21813)

Edelbrock – Pushrod Set for Ford 289-302 (Part No.9655)

Holley – Mechanical Fuel Pump (Part No.12-289-11)

Richmond Gear – RngPnn (Part No.69-0382-1)

Edelbrock – Signature Series Valve Covers: Big Block Ford 429-460 V8, Chrome Steel (Part No.4463)

Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

Edelbrock – Performer RPM Carb/Plate Nitrous Systems Square-Bore Carbs (100-250 Hp) (Part No.70090)

Competition Cams – ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST (Part No.17043-16)

Edelbrock – Performer 1411 Carburetor: 750 CFM, 4 Barrel, Square Bore, Electric Choke Inlet (Part No.1411)

Edelbrock – CARBURETOR (Part No.14054)

Edelbrock – Performer 1406 Carburetor: 600 CFM, 4 Barrel, Square Bore, Electric Choke Inlet (Part No.1406)

Edelbrock – Performer 1405 Carburetor: 600 CFM, 4 Barrel, Square Bore, Manual Choke Inlet (Part No.1405)

Edelbrock – Performer 1407 Carburetor: 750 CFM, 4 Barrel, Square Bore, Manual Choke Inlet (Part No.1407)

Holley – Mechanical Fuel Pump (Part No.12-289-11)

Mr. Gasket – Fuel Pump Block-Off Plate (Part No.1517)

Holley – Mechanical Fuel Pump (Part No.12-460-11)

Holley – Mechanical Fuel Pump (Part No.12-460-13)

Edelbrock – CARBURETOR (Part No.14064)

Edelbrock – Performer 1412 Carburetor: 800 CFM, 4 Barrel, Square Bore, Manual Choke Inlet (Part No.1412)

Edelbrock – Reman Thunder AVS Carb #18129 800 CFM With Manual Choke, Satin Finish (Non-EGR) (Part No.18129)

Edelbrock – Performer Carburetor #9907 750 CFM With Manual Choke, Satin Finish (Non-EGR) (Part No.9907)

Mallory – Unilite Ignition Module (Part No.605)

Accel – Super Stock Replacement Coil for Improved Performance, Starting, and Power (Part No.8140)

Accel – Supercoil (Part No.140001)

Mallory – Distributor Wiring Harness (Part No.29349)

MSD Ignition – Crank Trigger Kit; Small Block Ford (Part No.8640)

MSD Ignition – Crank Trigger Kit; Big Block Ford (Part No.8644)

Mallory – Promaster Classic Series; Ignition Coil (Part No.29440)

K&N – Engine Air Filter: Washable Filter, Increase Horsepower & Acceleration (Part No.E-1570)

Mr. Gasket – Exhaust Gasket Set (Part No.253)

FEL-PRO Performance – Exhaust Manifold Gasket Set (Part No.1430)

FEL-PRO Performance – Exhaust Manifold Gasket Set (Part No.1467)

FEL-PRO Performance – Exhaust Manifold Gasket Set (Part No.1468)

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 11 Piece Set (Part No.1250)

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1684)

Mr. Gasket – Ultra Seal: Intake Gasket (Part No.5838)

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1011-1)

Mr. Gasket – Ultra Seal: Valve Cover Gasket Set (Part No.5870)

Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

Weiand – Action +Plus; Intake Manifold (Part No.8010)

Edelbrock – 289-302 Ford Head Bolt Kit (Part No.8552)

Mr. Gasket – Intake Manifold Bolts (Part No.958G)

Competition Cams – ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST (Part No.17043-16)

Edelbrock – Sure Seat Valve Springs for Ford 429/460 V8 1969-1987 (Part No.5767)

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

Mr. Gasket – Ultra Seal: Harmonic Balancer Bolt/Washer Kit (Part No.7847)

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 5 Piece Set (Part No.1230)

Mr. Gasket – Valve Cover Gasket Set (Part No.276)

FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1811)

FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1812)

FEL-PRO Performance – Lower Intake Manifold Gasket Set: 7 Piece Set (Part No.1240)

Mr. Gasket – Intake Gasket (Part No.222)

Mr. Gasket – Rear Main Seal Gasket (Part No.1963)

FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1614)

Edelbrock – Performer 460 Intake Manifold #2166 for Ford 429/460, Non-EGR, Satin Finish (Part No.2166)

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1018)

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1013)

Edelbrock – Valve Cover Gasket Set for Ford (Part No.7569)

Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7821)