1991 Mercury Cougar Performance Engines

Essential 1991 Mercury Cougar Performance Engines

Mr. Gasket – Water Neck (Part No.2663)

Water Neck

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$25.99
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
  • Features an O-Ring style seal to prevent water leaks
  • Includes O-Rings and mounting bolts
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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"

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$1035.99
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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FEL-PRO Performance – PERFORMANCE OIL PAN GASKET SET (Part No.1809)

PERFORMANCE OIL PAN GASKET SET

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$25.49
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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Edelbrock – Water Pump Ford FE 352-428 1965-76 in Satin Finish (Part No.8805)

Water Pump Ford FE 352-428 1965-76 in Satin Finish

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$381.99
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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Edelbrock – #21053 Performer 390 Intake Manifold, Ford FE, 332-428, Black Finish (Part No.21053)

#21053 Performer 390 Intake Manifold, Ford FE, 332-428, Black Finish

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$479.99
The Edelbrock Performer 390 #21053 intake manifold is designed for street 332-352-360-390-406-410-427-428 c.i.d. Ford V8’s with medium- or low-rise cylinder heads. Manifold not equipped with EGR; will not accept stock Motorcraft spread-bore carburetor or
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Edelbrock – Sure Seat Valve Springs for Ford 351W V8 (Part No.5882)

Sure Seat Valve Springs for Ford 351W V8

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$52.99
Product Features:
  • Non-Rotator Type
  • 1.384 in. Outer Diameter
  • 1.020 in. Inner Diameter
  • 1.020 in. Coil Blind
  • Set of 16
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Edelbrock – Performer-Link Adjustable True-Roller Timing Chain Set (Part No.7811)

Performer-Link Adjustable True-Roller Timing Chain Set

from

$75.99


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 w/ 2-piece Fuel Pump Eccentric or EFI
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FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1613)

Engine Valve Cover Gasket Set

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$27.49
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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FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2948)

Engine Crankshaft 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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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

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$28.99
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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Edelbrock – Throttle Body, 90mm, Pro-Flo XT, Ford-Style, Black Powder Coated Finish (Part No.38183)

Throttle Body, 90mm, Pro-Flo XT, Ford-Style, Black Powder Coated Finish

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$429.99
The Edelbrock #38183 is a single-bore 90mm throttle body designed with a 5.0L Ford-style base pad. It is fully machined and assembled by Edelbrock. It includes a Throttle Position Sensor, a progressive throttle cable lever, and cruise and kick-down attach
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Mr. Gasket – Ultra Seal: Sure-Lock Rocker Arm Nuts (Part No.923G)

Ultra Seal: Sure-Lock Rocker Arm Nuts

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

Performer Series Retainer (Qty 16)

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$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
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Mr. Gasket – Ultra Seal: Intake Gasket (Part No.5836)

Ultra Seal: Intake Gasket

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$51.99
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 and distributor gasket.

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 and distributor gasket
  • For OE replacement, high performance street, drag race and oval track use
  • Creates Tight Leak proof Seal
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FEL-PRO Performance – Lower Intake Manifold Gasket Set: 7 Piece Set (Part No.1240)

Lower Intake Manifold Gasket Set: 7 Piece Set

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

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

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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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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1035)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

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

Pushrod Set for Ford 289-302

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$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
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Edelbrock – Pushrod Set for Ford 351W (Part No.9659)

Pushrod Set for Ford 351W

from

$190.99
Edelbrock part #9659 Pushrods are designed for small-block Ford 351W 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 precise f

Product Features:
  • 7.7 in. Length
  • 0.312 in. Diameter
  • 4130 Chromoly Steel Material
  • Black Oxide Finish
  • Made In The USA
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Competition Cams – Xtreme Energy 240/246 Hydraulic Flat Cam and Lifter Kit for Ford 351W (Part No.CL35-250-4)

Xtreme Energy 240/246 Hydraulic Flat Cam and Lifter Kit for Ford 351W

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$373.99
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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Edelbrock – Performer-Plus Camshaft Kit for Big-Block Ford 429/460 V8 (Part No.2167)

Performer-Plus Camshaft Kit for Big-Block Ford 429/460 V8

from

$368.99


Product Features:
  • Designed for Optimum Torque and Acceleration
  • Maximum Performance From Idle through Mid-Range
  • Matched to Edelbrock Performer Intakes
  • Includes Hydraulic Lifters and Assembly Lube
  • Major Improvement in Throttle Response and Torque
  • Use For Daily Drivers/Trucks/Vans/RVs/4x4s
  • Take The Guesswork Out Of Camshaft Selection
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Mr. Gasket – Super Intake Manifold Bolts (Part No.6082)

Super Intake Manifold Bolts

from

$43.99
Super Intake Manifold Bolts

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

High Performance Thermostat

from

$27.49
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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Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

from

$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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Competition Cams – High Energy 206/206 Hydraulic Flat Cam for Ford 429,460 (Part No.34-224-4)

High Energy 206/206 Hydraulic Flat Cam for Ford 429,460

from

$368.99
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. Offering

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 – Xtreme Energy Computer Controlled 206/212 Hydraulic Roller Cam for Ford 5.0L (Part No.35-512-8)

Xtreme Energy Computer Controlled 206/212 Hydraulic Roller Cam for Ford 5.0L

from

$522.99
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 – Xtreme Energy 218/224 Hydraulic Flat Cam for Ford 221-302 (Part No.31-238-3)

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

from

$257.99
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/Marine 253/253 Hydraulic Flat Cam for Ford 429,460 (Part No.34-337-4)

Magnum/Marine 253/253 Hydraulic Flat Cam for Ford 429,460

from

$284.99
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. Ideal for use with higher compression ratio engines that

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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1991 Mercury Cougar Performance Engines

Maybe you’re in the middle of a full rebuild of that 1991 Mercury Cougar. Maybe you just need a couple of Performance Engines. Either way, Advance Auto Parts has 31 different Performance Engines in our inventory ranging from $19.99 to $1,157.99. That means you can find the exact parts or products you need to keep that 1991 Mercury Cougar running smoothly.

Performance Engines are only as good as their brand. We stock 5 different brands to make sure you have plenty of trusted parts to choose from for your 1991 Mercury Cougar. Mr. Gasket, FEL-PRO Performance, and Edelbrock are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Performance Engines for your 1991 Mercury Cougar, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 129 reviews in this category, some of the top rated parts include VALVE SPRING KIT, FOR LS 1.310" BEEHIVE 1 KT with 4.1 stars and PERFORMANCE OIL PAN GASKET SET with 2.0 stars.

So if you’re in the market for aftermarket Performance Engines to keep your 1991 Mercury Cougar rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Performance Engines Brands To Make Your 1991 Mercury Cougar Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1991 Mercury Cougar demands trusted brand parts and products to keep it running. Many trusted brands of Performance Engines make up Advance Auto Parts’ inventory, and all are ready to help make your Cougar the best it can be. Be sure to browse some of our top Performance Engines brands and parts.

Popular FEL-PRO Performance Performance Engines

We carry FEL-PRO Performance parts in our stock across Performance Engine Intake Manifold Gaskets categories, plus more. For a 1991 Mercury Cougar, our most popular FEL-PRO Performance Performance Engines include:
Lower Intake Manifold Gasket Set: 5 Piece Set
from $31.49
(1)
Lower Intake Manifold Gasket Set: 5 Piece Set
Performance Engine Intake Manifold Gaskets
Lower Intake Manifold Gasket Set: 11 Piece Set
from $33.99
(4)
Lower Intake Manifold Gasket Set: 11 Piece Set
Performance Engine Intake Manifold Gaskets
Engine Valve Cover Gasket Set
from $46.99
(1)
Engine Valve Cover Gasket Set
Performance Engine Valve Cover Gasket Sets

Top 1991 Mercury Cougar Performance Engines from Mr. Gasket

Mr. Gasket products are another trusted brand when it comes to Performance Engines for your 1991 Mercury Cougar. Popular Mr. Gasket parts include:
High Performance 180 Degree Thermostat for Increased Flow
from $26.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats
Water Neck
from $19.99
(12)
Water Neck
Performance Water Outlets
Intake Manifold Bolts
from $19.99
(1)
Intake Manifold Bolts
Performance Intake Manifolds

FAQs for 1991 Mercury Cougar Performance Engines

What are the most purchased Performance Engines for the 1991 Mercury Cougar?

Out of 31 Performance Engines for the 1991 Mercury Cougar, the most popular in our inventory are:
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $52.99
(2)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
Performance Engine Cylinder Head Gaskets
High Performance Thermostat
from $27.49
This product is not rated
High Performance Thermostat
Performance Engine Coolant Thermostats
Intake Manifold Gasket for 1963-1996 Small-Block Fords
from $28.99
(1)
Intake Manifold Gasket for 1963-1996 Small-Block Fords
Performance Engine Intake Manifold Gaskets

What are the top-rated 1991 Mercury Cougar Performance Engines?

Top-rated Performance Engines for your 1991 Mercury Cougar based on customer reviews/ratings are:
VALVE SPRING KIT, FOR LS 1.310" BEEHIVE 1 KT
from $592.99
(15)
VALVE SPRING KIT, FOR LS 1.310" BEEHIVE 1 KT
“OKAY”
PERFORMANCE OIL PAN GASKET SET
from $25.49
(3)
PERFORMANCE OIL PAN GASKET SET
“Good product at a reasonable price. Works great.”
Performer-Link Adjustable True-Roller Timing Chain Set
from $75.99
(1)
Performer-Link Adjustable True-Roller Timing Chain Set
“I gave the product a 4 star only because the lower gear(crank gear)was SO tight I had to use a bit of 400 grit sandpaper to open it up a hair. The old”