1984 Mercury Cougar Performance Engines

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Keep Your 1984 Mercury Cougar in Top Shape with Quality Performance Engines

Whether you’re repairing or upgrading your Performance Engine, using high-quality parts is key to keeping your 1984 Mercury Cougar looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Water Outlets, Performance Engine Cylinder Head Gaskets, and Performance Engine Intake Manifold Gaskets. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Performance Engines from Trusted Brands

Looking for a reliable Performance Engine? We’ve got you covered with options from brands you know and trust like FEL-PRO Performance, Edelbrock, and Competition Cams. For example, FEL-PRO Performance Performance Engines start at just $35.99 with an average 4.2 star rating. Edelbrock and Competition Cams offer similar pricing and quality, backed by strong customer feedback. With over 56 reviews and a solid 4 star average, you can shop with confidence knowing other Mercury Cougar owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1984 Mercury Cougar Performance Engine at Advance Auto Parts is around $198.60, with a range that starts at $7.99 and goes up to $1,389.00. With 89 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like Performer-Link Adjustable True-Roller Timing Chain Set, High Performance Thermostat, and Intake Manifold Gasket for 1963-1996 Small-Block Fords start at just $30.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Performance Engine, don’t forget to check out other key components like Performance Distributors and Performance Oil Filters. At Advance Auto Parts, we’re here to help you keep your 1984 Mercury Cougar in peak condition, inside and out.

Essential 1984 Mercury Cougar Performance Engines

Edelbrock – RPM Air-Gap Small Block Ford Polished Intake Manifold (Part No.75811)

RPM Air-Gap Small Block Ford Polished Intake Manifold

from

$811.99
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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Competition Cams – Keyway Adjustable Billet Timing Set for Ford 352-428 (Part No.7108)

Keyway Adjustable Billet Timing Set for Ford 352-428

from

$212.99
Keyway Adjustable Billet Timing Set for Ford 352-428

Edelbrock – Performer Series Retainer (Qty 16) (Part No.9733)

Performer Series Retainer (Qty 16)

from

$141.99
Valve spring retainers for use OE cast iron heads. Superior quality heat-treated steel. Machined for strength with black oxide finish. Finish ensures rust and corrosion protection.

Product Features:
  • Valve Spring Retainers for Use OE Cast Iron Heads
  • Superior Quality Heat-Treated Steel
  • Machined for Strength with Black Oxide Finish
  • Finish Ensures Rust and Corrosion Protection
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Mr. Gasket – Ultra Seal: Harmonic Balancer Bolt/Washer Kit (Part No.7847)

Ultra Seal: Harmonic Balancer Bolt/Washer Kit

from

$45.49
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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Edelbrock – Performer Small-Block Ford 5.0L/ 5.0L Cylinder Head 2.02" (Part No.60399)

Performer Small-Block Ford 5.0L/ 5.0L Cylinder Head 2.02"

from

$1087.99
Product Features:
  • Complete Single For Flat Tappet
  • 60cc Combustion Chamber Volume
  • 170cc Intake/60cc Exhaust Runner Volume
  • 2.02 in. Intake/1.60 in. Exhaust Valve Diameter
  • 0.625 in. Deck Thickness
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Competition Cams – Ultra Pro Magnum Xd Rockers With 1.7 Ratio For Ford 289, 302, 351W With 7/16" Stud (Part No.1834-16)

Ultra Pro Magnum Xd Rockers With 1.7 Ratio For Ford 289, 302, 351W With 7/16" Stud

from

$649.99
Machined from 8650 steel with a billet pushrod seat insert, these Ultra Pro Magnum XD rockers can handle up to 1,000 lbs. of spring pressure. These 1834 rockers feature a 1.7 ratio for use with 7/16″ stud Ford 289, 302 and 351 Windsor.

Product Features:
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FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1613)

Engine Valve Cover Gasket Set

from

$29.99
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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Mr. Gasket – Cam Change Gaskets (Part No.4410)

Cam Change Gaskets

from

$74.99
If you want to update just your camshaft and aren’t doing a complete engine overhaul, this kit contains all the gaskets needed to change out your camshaft. That way you don’t have to buy a complete gasket kit just to change the cam, but still can replace all the gaskets you should in the process.

Product Features:
  • Contains all the gaskets needed to change out your camshaft
  • Fuel Injector O-Ring Not Included
  • Meets Performance Standards
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FEL-PRO Performance – Performance Main Seal Set (Part No.2948)

Performance Main Seal Set

from

$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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Mr. Gasket – Water Neck (Part No.2664)

Water Neck

from

$35.99
Precision die-cast, these water necks are first polished to a high luster, then chrome plated. Comes with gasket and mounting bolts.

Product Features:
  • Complete with gasket and mounting bolts
  • Chrome plated
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Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)

High Performance Thermostat - 160 Degree Brass & Copper

from

$29.99
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 160 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
See More

Competition Cams – 1 Spring (Part No.26113-1)

1 Spring

from

$24.99
1 Spring

Competition Cams – VALVE SEALS, 11/32" TEFLON 1 ST (Part No.503-16)

VALVE SEALS, 11/32" TEFLON 1 ST

from

$223.99
COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don’t forget the valve seals.

Product Features:
  • Work with .530″ guides and 11/32″ valve stem diameter
  • Valve stem oil seals keep unwanted oil from entering the combustion chamber
  • Several different types of valve seals are offered
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Competition Cams – Valve Seals, Umbrella 11/32" 1 St (Part No.502-16)

Valve Seals, Umbrella 11/32" 1 St

from

$230.99
COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don’t forget the valve seals.

Product Features:
  • Work with stock guides and 11/32″ valve stem diameter
  • Valve stem oil seals keep unwanted oil from entering the combustion chamber
  • Several different types of valve seals are offered
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Competition Cams – Xtreme Energy 224/230 Hydraulic Flat Cam (Part No.31-242-3)

Xtreme Energy 224/230 Hydraulic Flat Cam

from

$267.99
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.
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Competition Cams – Magnum 253/253 Hydraulic Flat Cam (Part No.35-331-4)

Magnum 253/253 Hydraulic Flat Cam

from

$297.99
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.
See More

FEL-PRO Performance – Performance Cylinder Head Gasket (Part No.1035)

Performance Cylinder Head Gasket

from

$82.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.

Product Features:
  • Fel-Pro Performance head gaskets accommodate the high cylinder pressures and cylinder head movement associated with performance engines.
  • Inserted within a stainless steel armor surrounding each cylinder, wire ring design provides highly concentrated sealing around the combustion chamber.
  • Raises combustion sealing force to roughly three times that of standard head gaskets.
  • Steel wire rings for the greatest combustion seal strength.
  • Not intended for use in emission controlled vehicles.
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Edelbrock – Cylinder Head Gasket Set for Ford (Part No.7337)

Cylinder Head Gasket Set for Ford

from

$65.99
Product Features:
  • Cylinder Head Gasket Set
  • 1958-1976 390-428
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Edelbrock – Front Timing Cover Gasket Set #6991 For Small-Block Ford, With Front Seal (Part No.6991)

Front Timing Cover Gasket Set #6991 For Small-Block Ford, With Front Seal

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
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Mr. Gasket – Intake Gasket (Part No.202A)

Intake Gasket

from

$47.49
Mr. Gasket Performance Intake Gaskets are manufactured from cellulose/nitrile composition gasket material. They provide excellent sealing and durability. Can be trimmed if necessary for modified port applications. Complete with manifold end seals and distributor gasket (where applicable). For original equipment replacement, high performance street, drag race and oval track.

Product Features:
  • Manufactured from cellulose/nitrile composition gasket material
  • Provides excellent sealing and durability
  • Can be trimmed if necessary for modified port applications
  • Complete with manifold end seals and distributor gasket where applicable
  • For OE replacement, high performance street, drag race and oval track use
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Mr. Gasket – Intake Gasket (Part No.211)

Intake Gasket

from

$42.99
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. Fits all Ford 351C – 2V or 351 Cleveland 2-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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FEL-PRO Performance – Lower Intake Manifold Gasket Set: 11 Piece Set (Part No.1250)

Lower Intake Manifold Gasket Set: 11 Piece Set

from

$35.99
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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Competition Cams – High Energy 9.500" Long, 5/16" Diameter Pushrod Set (Part No.7837-16)

High Energy 9.500" Long, 5/16" Diameter Pushrod Set

from

$42.99
High Energy 9.500" Long, 5/16" Diameter Pushrod Set

Edelbrock – Pushrod Set for Small Block Ford 289-302 V-8, Black Oxide finish (Part No.9632)

Pushrod Set for Small Block Ford 289-302 V-8, Black Oxide finish

from

$221.99
Product Features:
  • Case-Hardened Tubing
  • Surface Hardening
  • Welded Ends
  • 0.3125 in. Diameter
  • Use with or without Hardened Steel Guideplates
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Edelbrock – Pushrod Set for Ford 289-302 (Part No.9655)

Pushrod Set for Ford 289-302

from

$219.99
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
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Competition Cams – Thumpr 226/241 Hydraulic Flat Cam and Lifter Kit (Part No.CL32-600-5)

Thumpr 226/241 Hydraulic Flat Cam and Lifter Kit

from

$435.99
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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Competition Cams – High Energy/Marine 218/218 Hydraulic Flat Cam K-Kit (Part No.K34-227-4)

High Energy/Marine 218/218 Hydraulic Flat Cam K-Kit

from

$637.99
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.
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Competition Cams – Magnum 230/230 Hydraulic Flat Cam and Lifter Kit (Part No.CL32-225-4)

Magnum 230/230 Hydraulic Flat Cam and Lifter Kit

from

$411.99
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.
See More

Most Popular Performance Water Outlet for 1984 Mercury Cougars

Enhance your 1984 Mercury Cougar with this popular Performance Water Outlet we have in stock, for $23.79.

Mr. Gasket – Water Neck (Part No.2662)

Water Neck

from

$23.79
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:
  • Chrome Plated
  • This Is A 45 Degree Neck
  • Comes With O-ring And Bolts
  • Has Small Hose Fitting On It
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Best-Selling 1984 Mercury Cougar Performance Engine Cylinder Head Gasket

Upgrade your Cougar with our best-selling Performance Engine Cylinder Head Gasket with a 4 Starts rating across 2 reviews.

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1011-2)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

from

$52.99
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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Top-Quality Performance Engine Intake Manifold Gaskets for 1984 Mercury Cougars

Choose a high-quality OEM or aftermarket Performance Engine Intake Manifold Gasket for Mercury Cougars and enjoy top-notch performance from $30.99.

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

Lower Intake Manifold Gasket Set: 11 Piece Set

from

$35.99
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
See More

Edelbrock – Intake Manifold Gasket for 1963-1996 Small-Block Fords (Part No.7220)

Intake Manifold Gasket for 1963-1996 Small-Block Fords

from

$30.99


Product Features:
  • Clean Positive Seal
  • Embossed Silicone Bead Surrounding The Port
  • Matched To Manifolds And Cylinder Heads
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Top Picks for 1984 Mercury Cougar Performance Engine Coolant Thermostats

Invest in one of our 3 durable Performance Engine Coolant Thermostats for your 1984 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

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

High Performance 180 Degree Thermostat for Increased Flow

from

$29.99
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
See More

Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)

High Performance Thermostat - 160 Degree Brass & Copper

from

$29.99
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 160 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
See More

Mr. Gasket – High Performance Thermostat (Part No.4365)

High Performance Thermostat

from

$32.49
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 195 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
See More

Top-Rated Performance Intake Manifolds for 1984 Mercury Cougars

Make a smart move for your 1984 Mercury Cougar with products all priced from $395.99 to $414.99.

Edelbrock – Torker II 302 Intake Manifold Small-Block Ford (Part No.5021)

Torker II 302 Intake Manifold Small-Block Ford

from

$395.99
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
See More

Edelbrock – Performer Intake Manifold Small-Block Ford (Part No.3721)

Performer Intake Manifold Small-Block Ford

from

$414.99


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
See More

Top-Rated Performance Engine Brands For Your 1984 Mercury Cougar

When it comes to finding the perfect Performance Engine for your 1984 Mercury Cougar, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 trusted brands. We carry the most popular Performance Engine brands including Edelbrock, FEL-PRO Performance, and Competition Cams, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $30.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1984 Mercury Cougar, providing peace of mind with parts that meet or exceed OEM standards.

Popular Edelbrock 1984 Mercury Cougar Performance Engines

If you’re looking for a top-quality Performance Engine for your 1984 Mercury Cougar, Advance Auto Parts has exactly what you need with our selection of Edelbrock Performance Engines. We have 2 Edelbrock Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $30.99 and an average cost of $38.99, you’ll find the perfect Performance Engine for your needs and budget. Edelbrock Performance Engines for the 1984 Mercury Cougar come highly rated, with over 2 customer reviews and an impressive average rating of 4.4 stars. Choosing a Edelbrock Performance Engine from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Performer-Link Adjustable True-Roller Timing Chain Set
from $46.99
(1)
Performer-Link Adjustable True-Roller Timing Chain Set
“This replaced a worn chain on an ’88 Ford 302 and it made all the difference in the world. Timing had been thrown off by the original parts with over ”
Intake Manifold Gasket for 1963-1996 Small-Block Fords
from $30.99
(1)
Intake Manifold Gasket for 1963-1996 Small-Block Fords
“Minor fitment corrections to line up with my AFR185 heads and Victor Jr Intake.”

Top-Quality FEL-PRO Performance 1984 Mercury Cougar Performance Engines

For those in search of a high-quality Performance Engine for their 1984 Mercury Cougar, Advance Auto Parts offers a great selection of FEL-PRO Performance Performance Engines. With 3 FEL-PRO Performance Performance Engines in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Performance Engines start at just $35.99, with an average price of $46.66, giving you a range of options to suit your budget. Backed by over 7 customer ratings and an average rating of 4.2 stars, FEL-PRO Performance Performance Engines provide both reliability and excellent performance. Choosing a FEL-PRO Performance Performance Engine from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $52.99
(2)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
“Can’t go wrong with Fel Pro one of the best gasket companies out there.”
Engine Valve Cover Gasket Set
from $50.99
(1)
Engine Valve Cover Gasket Set
“good”
Lower Intake Manifold Gasket Set: 11 Piece Set
from $35.99
(4)
Lower Intake Manifold Gasket Set: 11 Piece Set
“Great overall intake gasket!!”

FAQs for 1984 Mercury Cougar Performance Engines

What are the best-selling Performance Engines for 1984 Mercury Cougars?

Out of 89 Performance Engines that fit 1984 Mercury Cougars, the following parts are the top sellers:

What’s the price range for 1984 Mercury Cougar Performance Engines?

The prices of Performance Engines for the 1984 Mercury Cougar range from $7.99 up to $1,389.00 for the most premium parts.

What is the average price of a Performance Engine for a 1984 Mercury Cougar?

The average price for Performance Engines for the 1984 Mercury Cougar is $198.60. Keep in mind the variety of part types within our Performance Engine category, where you are likely to find a wide range of prices across a variety of parts and components.

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

Yes, we carry Performance Engines for 29 model years of Mercury Cougars between 1967 and 1997. The following model years are the most popular for Performance Engine purchases: 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, and 1989.

What are the cheapest Performance Engines for my 1984 Mercury Cougar?

The cheapest 1984 Mercury Cougar Performance Engines we carry are:

Does Advance Auto Parts sell Performance Engines for any other 1984 Mercury models?

Yes. We stock Performance Engines for 3 other popular 1984 Mercury models. Some of the most popular are 1984 Grand Marquis Performance Engines, 1984 Capri Performance Engines, 1984 Marquis Performance Engines, and 1984 Topaz Performance Engines.

What are the top-rated Performance Engines that fit the 1984 Mercury Cougar?

The one 1984 Mercury Cougar Performance Engine we have in stock is the Flat 1 Piece Guide Plate for Ford 289-351W with 5/16" Pushrod and 7/16" Stud. It costs $7.99.

What types of Performance Engines do you sell for my 1984 Mercury Cougar?

As of 6/2/26, these are some of the most in-demand types of Performance Engines for a 1984 Mercury Cougar:

Can I get help with 1984 Mercury Cougar Performance Engine orders?

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

What is your return policy for Mercury Cougar Performance Engines?

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