1981 Mercury Marquis Performance Engines

Name: Magnum 8.400" Long, .080" Wall, 5/16" Diameter Pushrod
Brand: Competition Cams
SKU: 7502-1
Price: 14.99 USD

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1981 Mercury Marquis 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 1981 Mercury Marquis looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Intake Manifolds, Performance Water Outlets, and Performance Engine Coolant Thermostats. 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, Competition Cams, and Edelbrock. For example, FEL-PRO Performance Performance Engines start at just $35.99 with an average 4.2 star rating. Competition Cams and Edelbrock offer similar pricing and quality, backed by strong customer feedback. With over 282 reviews and a solid 4 star average, you can shop with confidence knowing other Mercury Marquis owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1981 Mercury Marquis Performance Engine at Advance Auto Parts is around $228.43, with a range that starts at $7.99 and goes up to $1,095.99. With 158 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like High Performance Thermostat, Intake Manifold Gasket for 1963-1996 Small-Block Fords, and Performer-Link Adjustable True-Roller Timing Chain Set 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 Fuel Systems. At Advance Auto Parts, we’re here to help you keep your 1981 Mercury Marquis in peak condition, inside and out.

Looking for the perfect Performance Engine for your 1981 Mercury Marquis? You’re in the right place. Below, you’ll find links to various types of Performance Engines that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Performance Engines, ensuring durability and a precise fit for your Mercury Marquis. Whether you’re driving a 1981 model or another popular model year like 1977, 1978, 1979, 1980, 1982, 1983, 1984, 1985, and 1986, we’ve got you covered. Purchasing Performance Engines from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Performance Engines that fit your vehicle.

Essential 1981 Mercury Marquis Performance Engines

from

$14.99

Magnum 8.400" Long, .080" Wall, 5/16" Diameter Pushrod

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$10.99

10 Degree Steel Retainer for 26120 Beehive Spring

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$476.99

Rocker Arms,FS/FW 1.6 7/16 Ultra Pro Mag

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$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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$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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$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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$59.99

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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$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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$268.99

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

Product Features:

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

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$473.99

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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$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

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$29.99

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

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$48.99

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

Product Features:

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

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$50.99

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

Product Features:

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

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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$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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$608.99

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

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$437.99

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
Accepts both 4V and 2V Carburetors

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$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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$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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$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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$49.99

High Energy Timing Set for ’60-’83 Ford 144-200 V6

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$629.99

Keyway Adjustable Billet Timing Set For ’65-’88 Ford 289-351W

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$59.99

High Energy Timing Set for ’68-’71 Ford 429-460

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$426.99

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

from

$368.99

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

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$389.99

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.

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$356.99

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.

Popular 1981 Mercury Marquis Performance Engines Categories

Performance Engine Coolant Thermostats

Performance Intake Manifolds

Performance Engine Water Pumps

Performance Water Outlets

Performance Engine Cylinder Head Gaskets

Performance Engine Camshaft and Lifter Kits

Performance Engine Harmonic Balancers

Performance Engine Intake Manifold Gaskets

Performance Engine Timing Sets and Components

Performance Engine Valve Springs

Performance Engine Valve Cover Gasket Sets

Performance Engine Rocker Arms

Performance Engine Camshafts

Performance Engine Valve Lifters

Performance Engine Main Bearing Gasket Sets

Performance Engine Push Rod Guideplates

Performance Engine Camshaft Change Gasket Sets

Performance Engine Timing Cover Gasket Sets

Performance Engine Push Rods

Performance Engine Valve Spring Retainer

Performance Engine Valve Stem Seal Sets

Most Popular Performance Intake Manifolds for 1981 Mercury Marquis

Enhance your 1981 Mercury Marquis with one of the 9 Performance Intake Manifolds we have in stock, starting at just $314.99.

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$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

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$314.99

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
Available in Multiple Finishes

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$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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$608.99

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

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$605.99

Edelbrock part #75213 RPM Air-Gap intake manifold is designed for street 289 302-347 c.i.d. Ford V8’s. The RPM Air-Gap incorporates the same race-winning technology that’s been used on our Victor Series competition intakes for decades. The Air-Gap design

Product Features:

1500-6500 RPM Range
Dual Plane Type-4150 Style Flange
4.3 in. Front Height, 4.9 in. Center Height, 5.5 in. Rear Height
Black Powder Coated Finish
Made In The USA

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$492.99

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.

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$424.99

Edelbrock part #5081 Torker II 351W intake manifold is designed for 1969 and later 351 Windsor Ford V8 high-performance engines with Edelbrock heads, OEM 12- or 16-bolt heads or equivalent. Will not fit “Boss 351” Cleveland. Manifold not equipped with EGR

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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$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

from

$402.99

Product Features:

For Idle to 5500 RPM Street-Driven Performance
Stock Replacement
50-State Street Legal

Best-Selling 1981 Mercury Marquis Performance Water Outlet

Upgrade your Marquis with our best-selling Performance Water Outlet with a 4 Starts rating across 12 reviews.

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from

$23.79

Chrome Plated
This Is A 45 Degree Neck
Comes With O-ring And Bolts
Has Small Hose Fitting On It

Top-Quality Performance Engine Coolant Thermostats for 1981 Mercury Marquis

Choose a high-quality OEM or aftermarket Performance Engine Coolant Thermostat for Mercury Marquis and enjoy top-notch performance from $29.99.

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from

$29.99

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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$29.99

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

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$32.49

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

Top Picks for 1981 Mercury Marquis Performance Engine Intake Manifold Gaskets

Invest in one of our 2 durable Performance Engine Intake Manifold Gaskets for your 1981 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

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$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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$30.99

Product Features:

Clean Positive Seal
Embossed Silicone Bead Surrounding The Port
Matched To Manifolds And Cylinder Heads

Our Top-Rated Performance Engine Cylinder Head Gaskets for 1981 Mercury Marquis

Make a smart move for your 1981 Mercury Marquis with our Performance Engine Cylinder Head Gasket for $52.99.

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$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

Top-Rated Performance Engine Brands For Your 1981 Mercury Marquis

When it comes to finding the perfect Performance Engine for your 1981 Mercury Marquis, 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 1981 Mercury Marquis, providing peace of mind with parts that meet or exceed OEM standards.

Popular Edelbrock 1981 Mercury Marquis Performance Engines

If you’re looking for a top-quality Performance Engine for your 1981 Mercury Marquis, Advance Auto Parts has exactly what you need with our selection of Edelbrock Performance Engines. We have 1 Edelbrock Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $30.99, you’ll find the perfect Performance Engine for your needs and budget. Edelbrock Performance Engines for the 1981 Mercury Marquis come highly rated, with over 1 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.

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 1981 Mercury Marquis Performance Engines

For those in search of a high-quality Performance Engine for their 1981 Mercury Marquis, 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.

from $50.99

(1)

Engine Valve Cover Gasket Set

“good”

from $35.99

(4)

Lower Intake Manifold Gasket Set: 11 Piece Set

“Great overall intake gasket!!”

from $52.99

(2)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

“cometic head gasket is great but prob is dose not seal if the block isn’t mirror finished. many people switch over to felpro and it has worked out gre”

FAQs for 1981 Mercury Marquis Performance Engines

What are the best-selling Performance Engines for 1981 Mercury Marquis?

Out of 158 Performance Engines that fit 1981 Mercury Marquis, the following parts are the top sellers:

High Performance Thermostat (22903641) – $32.49
Intake Manifold Gasket for 1963-1996 Small-Block Fords (22342074) – $30.99
Performer-Link Adjustable True-Roller Timing Chain Set (5027543) – $74.99

What’s the price range for 1981 Mercury Marquis Performance Engines?

The prices of Performance Engines for the 1981 Mercury Marquis range from $7.99 up to $1,095.99 for the most premium parts.

What is the average price of a Performance Engine for a 1981 Mercury Marquis?

The average price for Performance Engines for the 1981 Mercury Marquis is $228.43. 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 Marquis model years?

Yes, we carry Performance Engines for 18 model years of Mercury Marquis between 1967 and 1986. The following model years are the most popular for Performance Engine purchases: 1986, 1985, 1984, 1983, 1982, 1980, 1979, 1978, and 1977.

What are the cheapest Performance Engines for my 1981 Mercury Marquis?

The cheapest 1981 Mercury Marquis Performance Engines we carry are:

Flat 1 Piece Guide Plate for Ford 289-351W with 5/16" Pushrod and 7/16" Stud (50288902) – $7.99
High Energy 6.881" Long, 5/16" Diameter Pushrod (50289324) – $7.99
High Energy 8.152" Long, 5/16" Diameter Pushrod (50289279) – $7.99
High Energy 7.694" Long, 5/16" Diameter Pushrod (50289681) – $8.99
Flat 1 Piece Guide Plate for Ford 289-351W with 3/8" Pushrod and 7/16" Stud (50288866) – $8.99

Does Advance Auto Parts sell Performance Engines for any other 1981 Mercury models?

Yes. We stock Performance Engines for 3 other popular 1981 Mercury models. Some of the most popular are 1981 Cougar Performance Engines, 1981 Grand Marquis Performance Engines, 1981 Capri Performance Engines, and 1981 Zephyr Performance Engines.

What types of Performance Engines do you sell for my 1981 Mercury Marquis?

As of 6/2/26, these are some of the most in-demand types of Performance Engines for a 1981 Mercury Marquis:

Can I get help with 1981 Mercury Marquis 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 Marquis Performance Engines?

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

1981 Mercury Marquis Performance Engines

Competition Cams – Magnum 8.400" Long, .080" Wall, 5/16" Diameter Pushrod (Part No.7502-1)

Competition Cams – 10 Degree Steel Retainer for 26120 Beehive Spring (Part No.795-1)

Competition Cams – Rocker Arms,FS/FW 1.6 7/16 Ultra Pro Mag (Part No.1632-16)

Edelbrock – Front Timing Cover Gasket Set #6991 For Small-Block Ford, With Front Seal (Part No.6991)

FEL-PRO Performance – Performance Main Seal Set (Part No.2948)

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

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

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

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

Edelbrock – Water Pump for Small-Block Ford 1970-79 351C and 351M/400 in Polished Finish (Part No.8849)

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

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

Mr. Gasket – Valve Cover Gasket Set (Part No.278)

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

Mr. Gasket – Intake Gasket (Part No.211)

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

Edelbrock – Performer 289 Intake Manifold for Small-Block Ford, Polished Finish (Part No.21211)

Edelbrock – Performer 351 Intake Manifold for Ford 351- 2V Cleveland Engine (Part No.2750)

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

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

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

Competition Cams – High Energy Timing Set for ’60-’83 Ford 144-200 V6 (Part No.3223)

Competition Cams – Keyway Adjustable Billet Timing Set For ’65-’88 Ford 289-351W (Part No.7138)

Competition Cams – High Energy Timing Set for ’68-’71 Ford 429-460 (Part No.3222)

Competition Cams – Xtreme Energy 230/236 Hydraulic Flat Cam and Lifter Kit (Part No.CL33-248-4)

Competition Cams – Xtreme Energy 206/212 Hydraulic Flat Cam and Lifter Kit (Part No.CL31-230-3)

Competition Cams – Magnum 224/224 Hydraulic Flat Cam and Lifter Kit (Part No.CL34-229-4)

Competition Cams – Magnum 244/244 Hydraulic Flat Cam and Lifter Kit (Part No.CL35-330-3)

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

Edelbrock – Performer 289 Intake Manifold for Small-Block Ford (Part No.2121)

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

Edelbrock – Performer 289 Intake Manifold for Small-Block Ford, Polished Finish (Part No.21211)

Edelbrock – RPM Air-Gap Small Block Ford 302 Black Intake Manifold (Part No.75213)

Edelbrock – RPM Air-Gap Small Block Ford 351W Intake Manifold (Part No.7581)

Edelbrock – Torker II Small Block Ford 351W Intake Manifold (Part No.5081)

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

Edelbrock – Performer 351-W Intake Manifold for S/B Ford 351 Windsor (Part No.2181)

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

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

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

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

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

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

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