1991 Mercury Cougar Performance Engines

Essential 1991 Mercury Cougar Performance Engines

Edelbrock – Performer Small-Block Ford 5.0L/ 5.8L Cylinder Head 1.90" (Part No.60379)

Performer Small-Block Ford 5.0L/ 5.8L Cylinder Head 1.90"

from

$1035.99
Product Features:
  • Capable of 300 plus horsepower when matched with the Edelbrock Performer Power Package
  • 1.90 in. intake valves are for use with stock pistons
  • Exhaust valve is 1.60 in.
  • 60cc combustion with 170cc intake port
  • Flat Tappet Camshaft Type
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Competition Cams – Magnum/Marine 253/253 Hydraulic Flat Cam (Part No.34-337-4)

Magnum/Marine 253/253 Hydraulic Flat Cam

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$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.

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

Sure Seat Valve Springs for Ford 429/460 V8 1969-1987

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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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FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1020)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

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$41.99
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 – TIMING CHAIN (Part No.7844)

TIMING CHAIN

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$29.99
Product Features:
  • Timing Chain Only
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Holley – Intake Manifold (Part No.300-72S)

Intake Manifold

from

$1170.00
Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro-Stock champion. Holley’s products include performance fuel pumps, fuel injection, intake manifolds, cylinder heads & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies, Hooker Headers, Flowtech Headers, NOS, Weiand, or Earl’s, Holley products can give you the edge you need over the competition.

Product Features:
  • Retains Stock Injector
  • Retains Water Outlet Locations
  • Internal Erg Passage
  • External EGR Passage
  • Maximized Port and Runner Sizes
  • Maximum Unrestricted Air Flow
  • 50 State Legal
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Mr. Gasket – Intake Manifold Bolts (Part No.958G)

Intake Manifold Bolts

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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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Edelbrock – Water Pump Ford 1965-67 289 cid (Part No.8842)

Water Pump Ford 1965-67 289 cid

from

$285.99
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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Mr. Gasket – Ultra Seal: Oil Pan Gasket (Part No.6683)

Ultra Seal: Oil Pan Gasket

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$59.19
High performance, race quality gasket with molded rubber coating over a steel core. Steel core provides rigidity and durability, preventing prevent push out while the molded rubber coating helps seal minor oil pan rail irregularities. The one piece design eliminates the need for separate end seals to make installation easier and even further reduce the possibility of oil leakage. Provides excellent sealing and durability. Excellent replacement for stock original equipment, high performance street, drag race and oval track. Includes gasket and new oil pan bolts.

Product Features:
  • Steel core provides rigidity, durability and prevents gasket push out
  • Molded rubber coating seals minor irregularities in pan surface
  • One piece design is easier to install and even less prone to leak
  • Direct replacement suitable for all uses – street, racing, heavy duty
  • Include both gasket and new oil pan bolts
  • No Cork Particles
  • Easy Removal For Disassembly
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Competition Cams – High Energy/Marine 218/218 Hydraulic Flat Cam and Lifter Kit (Part No.CL34-227-4)

High Energy/Marine 218/218 Hydraulic Flat Cam and Lifter Kit

from

$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.
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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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B & M – Torque Converter, Tork Master 2400 (Part No.50441)

Torque Converter, Tork Master 2400

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$450.99
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. Due to torque converter co

Product Features:
  • New Precision Pump Drive Tube
  • Pressure Tested
  • Fully Balanced
  • Needle Thrust Bearing
  • New Thrust Washer
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Edelbrock – 289-302 Ford Head Bolt Kit (Part No.8552)

289-302 Ford Head Bolt Kit

from

$107.99


Product Features:
  • Highest Quality Head Bolts
  • Cold-Formed/Heat Treated
  • Ensures Molecular Integrity
  • Reduced Diameter Bolt Heads
  • Hardened/Parallel-Ground Washers Included
  • Rated At 170000 psi
  • Manufactured By ARP
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Edelbrock – Pushrod Set for Small Block Ford 289-302 (Part No.9632)

Pushrod Set for Small Block Ford 289-302

from

$210.99
Product Features:
  • Case-Hardened Tubing
  • Surface Hardening
  • Welded Ends
  • 0.3125 in. Diameter
  • Use with or without Hardened Steel Guideplates
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Spectre – Water Neck; 351C (Part No.4735)

Water Neck; 351C

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$28.99
Spectre’s Ford water neck fits Ford 351 Cleveland 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 bolts and sealing O-ring.

Product Features:
  • Fits Ford 351 Cleveland
  • Includes sealing O-ring and bolts
  • Chrome plated
  • Easy to install
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Mr. Gasket – Water Neck (Part No.9713)

Water Neck

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

High Performance 180 Degree Thermostat for Increased Flow

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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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Competition Cams – Ultra-Gold ARC Rocker Set w/ 1.6 Ratio for Ford 289-351W w/ 3/8" Stud (Part No.19043-16)

Ultra-Gold ARC Rocker Set w/ 1.6 Ratio for Ford 289-351W w/ 3/8" Stud

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

ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST

from

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

Intake Gasket

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

Ultra Seal: Intake Gasket

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

Performer Series Retainer (Qty 16)

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

Rear Main Seal Gasket

from

$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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FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2941)

Engine Crankshaft Seal Kit

from

$48.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PTFE offers the best in fluid and high-temperature compatibility and contact sealing surface can run on undersize shafts, seal minor imperfections and virtually eliminate shaft wear.
  • 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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FEL-PRO Performance – Engine Crankshaft Seal Kit (Part No.2948)

Engine Crankshaft Seal Kit

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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Edelbrock – Valve Cover Gasket Set for Ford (Part No.7563)

Valve Cover Gasket Set for Ford

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$60.99
Product Features:
  • Valve Cover Gasket
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FEL-PRO Performance – Engine Valve Cover Gasket Set (Part No.1614)

Engine Valve Cover Gasket Set

from

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

Ultra Seal: Valve Cover Gasket Set

from

$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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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 34 different Performance Engines in our inventory ranging from $19.99 to $1,170.00. 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 6 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 94 reviews in this category, some of the top rated parts include ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST with 1.0 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 and Performance Engine Valve Cover Gasket Sets categories, plus more. For a 1991 Mercury Cougar, our most popular FEL-PRO Performance Performance Engines include:
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
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
from $55.99
(2)
Cylinder Head Gasket: Steel Core Composite, Without Head Bolts
Performance Engine Cylinder Head Gaskets

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
Intake Manifold Bolts
from $19.99
(1)
Intake Manifold Bolts
Performance Intake Manifold Hardware

FAQs for 1991 Mercury Cougar Performance Engines

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

Out of 34 Performance Engines for the 1991 Mercury Cougar, the most popular in our inventory are:
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
289-302 Ford Head Bolt Kit
from $107.99
(7)
289-302 Ford Head Bolt Kit
Performance Engine Cylinder Head Bolts
PUSHROD SET, SBF HIGH ENERGY 1 ST
from $75.99
This product is not rated
PUSHROD SET, SBF HIGH ENERGY 1 ST
Performance Engine Push Rods

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:
ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST
from $237.99
(1)
ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST
“These things break very easy. Not a big fan of the soft brass when trying to install them with the screwdriver head they use. Change it hex and it woy”