1975 Mercury Cougar Performance Engines

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Keep Your 1975 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 1975 Mercury Cougar looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Cylinder Head Gaskets, Performance Engine Intake Manifold Gaskets, 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 Competition Cams and FEL-PRO Performance. For example, Competition Cams Performance Engines start at just $239.99 with an average 4.0 star rating. FEL-PRO Performance offer similar pricing and quality, backed by strong customer feedback. With over 63 reviews and a solid 3.6 star average, you can shop with confidence knowing other Mercury Cougar owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1975 Mercury Cougar Performance Engine at Advance Auto Parts is around $412.01, with a range that starts at $14.99 and goes up to $2,168.99. With 129 options in stock from 7 trusted brands, finding the right fit is easy. Popular picks like FEL-PRO Performance Engine Intake Manifold Gasket Set, 1250, Mr. Gasket Intake Manifold Bolt Set, 958G, and FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1011-1 start at just $24.49 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 1975 Mercury Cougar in peak condition, inside and out.

Essential 1975 Mercury Cougar Performance Engines

B & M – B & M Torque Converter, Tork Master 2400, 40438 (Part No.40438)

B & M Torque Converter, Tork Master 2400, 40438

from

$749.99
This B&M Tork Master 2400 fits 1980-92 Ford AOD transmissions with a 1.375-inch crank pilot and has a 11.4-inch bolt circle. Don’t let the exceptional value fool you into thinking Tork Master Converters are not packed with lots of quality features, making them the best value-priced street performance converters money can buy. These converters perform best when paired with stock to modified engines up to 350hp/350 ft lbs of torque, and lighter weight applications, like street rods. The Tork Master will provide noticeably quicker launches and harder acceleration while maintaining normal daily driving qualities. Upgrades like a new precision alloy steel pump drive tube, needle thrust bearing when factory equipped, new thrust washer between turbine and cover when required, and pressure tested and fully balanced by expertly trained technicians. Notes: Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. Not recommended for big block, supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product.
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Mr. Gasket – Mr. Gasket Rear Main Seal Gasket, 30 (Part No.30)

Mr. Gasket Rear Main Seal Gasket, 30

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$51.99
This Mr. Gasket Rear Main Seal is made from silicone to allow the seal to handle extreme engine oil temperature. It is a direct replacement for a factory one-piece rubber main seal. It’s also injection molded for a precise fit.
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Edelbrock – Edelbrock Water Pump for Small-Block Ford 1970-79 351C and 351M/400 in Polished Finish, 8849 (Part No.8849)

Edelbrock Water Pump for Small-Block Ford 1970-79 351C and 351M/400 in Polished Finish, 8849

from

$489.99
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.
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Competition Cams – "Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16" (Part No.612-16)

"Competition Cams SUPER VALVE LOCKS, 3/8"" 1 ST, 612-16"

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$43.99
Inside tang-to-taper relationship held tightly for repeatable valve spring installed heights
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Competition Cams – Competition Cams COMP Cams Small Block Ford Engine Finishing Kit, 235 (Part No.235)

Competition Cams COMP Cams Small Block Ford Engine Finishing Kit, 235

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$35.99
It’s easy to overlook the small details. For engine builders focused on the larger components like camshafts, cylinder heads and pistons, small parts are often forgotten until the final stages of engine assembly. COMP Cams Engine Finishing Kits include those often missing parts like woodruff keys, cylinder head alignment dowels, cam bolts, cam eccentrics and timing cover and oil pump dowel pins that are so crucial to properly assembling your engine.
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Mr. Gasket – Mr. Gasket Chrome Water Neck, 2664 (Part No.2664)

Mr. Gasket Chrome Water Neck, 2664

from

$37.09
Precision die-cast, these water necks are first polished to a high luster, then chrome plated. Comes with gasket and mounting bolts.
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Edelbrock – Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7814 (Part No.7814)

Edelbrock Performer-Link Adjustable True-Roller Timing Chain Set, 7814

from

$46.99
Edelbrock part No: 7814 Performer-Link timing chain is for use with Edelbrock or stock cams. They have a solid-bushing chain for a true bearing surface that rolls with the sprockets, eliminating chain stretch. Cam sprockets are made from 35,000 psi tensile strength cast iron. Crank sprockets are made from billet SAE-1144 steel and induction heat treated. Four Performer-Link sets are stock replacement parts and 50-state legal (see listings in bold type). All other sets have three keyway setting points to ensure accurate timing selection for early or late-model vehicles. Performer-Link timing sets are not for use above 6500 rpm. Performer roller chain sets are engineered to operate up to 6500 rpm. Never hammer directly on chain or sprockets. You can crack the hardened links and pins and cause early failures. Use a sleeve for installations that require hammering, a brass drift punch may be used if you carefully alternate blows on either side of the sprocket to avoid cocking. Never stretch the chain with a screwdriver. Check for clearance between the timing chain and block and between the chain and front cover before reassembly. Be sure that both cam and crank sprockets are exactly in line with each other. Misalignment can cause chain to break.
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Competition Cams – Competition Cams Thumpr 227/241 Hydraulic Flat Cam K-Kit, K35-600-4 (Part No.K35-600-4)

Competition Cams Thumpr 227/241 Hydraulic Flat Cam K-Kit, K35-600-4

from

$617.99
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.
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Mr. Gasket – Mr. Gasket Ultra Seal: Valve Cover Gasket Set, 5871 (Part No.5871)

Mr. Gasket Ultra Seal: Valve Cover Gasket Set, 5871

from

$53.29
“Ultra-Seal is Mr. Gasket’s premium valve cover gasket material. It’s manufactured from a high density cork and rubber blend 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 OE replacement, high performance street, drag race and oval track use. Sold as a pair, these gaskets are .187″” thick.”
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Edelbrock – Edelbrock Performer Series Retainer, 9733 (Part No.9733)

Edelbrock Performer Series Retainer, 9733

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$149.99
Edelbrock Valve Spring Retainers are made of superior quality steel and are machined and heat treated for maximum strength. They feature a black oxide finish to prevent rust and corrosion
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Edelbrock – Edelbrock Ford 429-460 Head Bolt Kit, 8566 (Part No.8566)

Edelbrock Ford 429-460 Head Bolt Kit, 8566

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$359.99
Edelbrock Ford 429-460 Head Bolt Kit, 8566.
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FEL-PRO Performance – FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1011-1 (Part No.1011-1)

FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1011-1

from

$52.99
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.
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Edelbrock – Edelbrock Performer-Plus Camshaft Kit for Small-Block Ford 289-302 V8, 2122 (Part No.2122)

Edelbrock Performer-Plus Camshaft Kit for Small-Block Ford 289-302 V8, 2122

from

$338.99
“Edelbrock Performer-Plus Camshaft No: 2122 is designed for 289-302 Ford V8 engines and produces optimum torque from the low-end to the mid-range. Performer-Plus camshafts should be matched with Performer manifolds for vehicles operating from off-idle to 5500 rpm. The Performer-Plus No: 2122 is a smooth idling cam for daily drivers, trucks, vans, RVs and 4x4s. You can expect a major improvement in throttle response and torque. In the manifold section you’ll find torque graphs showing the power gains from Performer manifolds and Performer-Plus cams. All camshafts include flat tappet lifters (except for cams designed for use with stock roller lifters), assembly lube and instructions. This cam produced 310HP and 260 Ft Lbs of Torque when paired with Performer 289 intake manifold No: 2121 and Performer cylinder heads No: 60329. Not for 1985 and later engines with roller lifters. Camshaft specifications: – Intake duration: 204 Degrees – Exhaust duration: 214 Degrees – Intake lift: .448″” – Exhaust lift: .472″” – Lobe separation: 112 Degree – Intake Center Line: 107 Degree – Vacuum: 16″””
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Edelbrock – Edelbrock Small-Block Ford E-205 Cylinder Head with Flat Tappet Camshaft, Set of 2, 5028 (Part No.5028)

Edelbrock Small-Block Ford E-205 Cylinder Head with Flat Tappet Camshaft, Set of 2, 5028

from

$2168.99
The Edelbrock No. 5028 E-Series Cylinder heads are designed for Small-Block Ford applications. The Edelbrock E-Series cylinder heads are a step up in affordable performance from our E-Street line. They feature larger runners for increased airflow, revised exhaust ports and larger diameter springs for higher lift camshafts, making them ideal for a spec series racer and larger displacement engines. The Edelbrock No. 5028 E-Street Cylinder heads also have as-cast ports and maintain the stock exhaust port location, making them compatible with OEM headers and hardware.
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Edelbrock – Edelbrock Performer 400 Intake Manifold for 1971-82 Ford 351/M400, 2171 (Part No.2171)

Edelbrock Performer 400 Intake Manifold for 1971-82 Ford 351/M400, 2171

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$443.99
Edelbrock Performer 400 Intake Manifold for 1971-82 Ford 351/M400, 2171.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE OIL PAN GASKET SET, 1811 (Part No.1811)

FEL-PRO Performance PERFORMANCE OIL PAN GASKET SET, 1811

from

$30.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Competition Cams – Competition Cams Valve Seals, 503-16 (Part No.503-16)

Competition Cams Valve Seals, 503-16

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.
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Competition Cams – "Competition Cams High Energy 6.881"" Long, 5/16"" Diameter Pushrod – Set of 16, 7831-16" (Part No.7831-16)

"Competition Cams High Energy 6.881"" Long, 5/16"" Diameter Pushrod - Set of 16, 7831-16"

from

$66.99
High Energy Pushrods from COMP Cams are an affordable, high quality solution when building street rods, RVs and daily drivers. High Energy Pushrods have a durable one-piece construction that meets or exceeds all OE pushrod specifications and fit perfectly with High Energy and Magnum Rocker Arms.
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Competition Cams – Competition Cams ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST, 17043-16 (Part No.17043-16)

Competition Cams ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST, 17043-16

from

$322.99
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.
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Competition Cams – "Competition Cams VALVE SPRING KIT, FOR LS 1.310"" BEEHIVE 1 KT, 26918CS-KIT" (Part No.26918CS-KIT)

"Competition Cams VALVE SPRING KIT, FOR LS 1.310"" BEEHIVE 1 KT, 26918CS-KIT"

from

$482.99
“This Beehive Valve Spring Kit for LS engines is designed for hydraulic roller cams and includes carefully matched Beehive Springs, steel retainers, locks, seals and spring seats. With a .625″” maximum lift, these Beehive Valve Springs deliver increased valve train stability and a much lighter valve train. This is achieved with less spring pressure for better valve control and reduced weight of both the spring and retainer. The unique Beehive shape handles valve train stress more efficiently to eliminate damaging harmonics and increases high RPM horsepower and durability. The oval/multi-arc wire shape places the maximum area of the wire at the point of highest stress to handle valve train stress more efficiently and allow better heat dissipation for longer life.Kit Includes:26918-16 Beehive Valve Springs774-16 Steel Retainers623-16 7° Steel Valve Locks511-16 Valve Seals4705-16 Spring Seats”
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Competition Cams – Competition Cams High Energy Timing Set for ’60-’83 Ford 144-200 V6, 3223 (Part No.3223)

Competition Cams High Energy Timing Set for '60-'83 Ford 144-200 V6, 3223

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$55.99
Competition Cams High Energy Timing Set for ’60-’83 Ford 144-200 V6, 3223.
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Competition Cams – Competition Cams Magnum Double Row Timing Set for ’65-’88 Ford 255, 289, 302 and Boss 302, 2120 (Part No.2120)

Competition Cams Magnum Double Row Timing Set for '65-'88 Ford 255, 289, 302 and Boss 302, 2120

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$123.99
Competition Cams Magnum Double Row Timing Set for ’65-’88 Ford 255, 289, 302 and Boss 302, 2120.
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FEL-PRO Performance – FEL-PRO Performance Engine Intake Manifold Gasket Set, 1250 (Part No.1250)

FEL-PRO Performance Engine Intake Manifold Gasket Set, 1250

from

$35.99
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.
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Mr. Gasket – Mr. Gasket Ultra Seal: Intake Gasket, 5838 (Part No.5838)

Mr. Gasket Ultra Seal: Intake Gasket, 5838

from

$53.29
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.
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Mr. Gasket – Mr. Gasket High Performance Thermostat – 160 Degree Brass & Copper, 4363 (Part No.4363)

Mr. Gasket High Performance Thermostat - 160 Degree Brass & Copper, 4363

from

$31.99
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.
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Competition Cams – Competition Cams Xtreme Energy 212/218 Hydraulic Flat Cam, 33-234-4 (Part No.33-234-4)

Competition Cams Xtreme Energy 212/218 Hydraulic Flat Cam, 33-234-4

from

$309.99
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,
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Competition Cams – Competition Cams Magnum 224/224 Hydraulic Flat Cam, 35-414-3 (Part No.35-414-3)

Competition Cams Magnum 224/224 Hydraulic Flat Cam, 35-414-3

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.
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Competition Cams – Competition Cams Magnum/Marine 230/230 Hydraulic Flat Cam, 31-226-3 (Part No.31-226-3)

Competition Cams Magnum/Marine 230/230 Hydraulic Flat Cam, 31-226-3

from

$297.99
HYDRAULIC – Magnum: Broad power. 2500+ stall, low gears, 9.5:1 compression and headers. Rough idle. OR Marine: Off shore type boat. Strong performance, rough idle.
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Most Popular Performance Engine Cylinder Head Gaskets for 1975 Mercury Cougars

Enhance your 1975 Mercury Cougar with one of the 8 Performance Engine Cylinder Head Gaskets we have in stock, starting at just $52.99.

FEL-PRO Performance – FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1011-1 (Part No.1011-1)

FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1011-1

from

$52.99
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.
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FEL-PRO Performance – FEL-PRO Performance Performance Cylinder Head Gasket, 1018 (Part No.1018)

FEL-PRO Performance Performance Cylinder Head Gasket, 1018

from

$53.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE CYLINDER HEAD GASKET, 1013 (Part No.1013)

FEL-PRO Performance PERFORMANCE CYLINDER HEAD GASKET, 1013

from

$59.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Mr. Gasket – Mr. Gasket Mls Head Gasket, 3175G (Part No.3175G)

Mr. Gasket Mls Head Gasket, 3175G

from

$134.99
Our unique Multi-Layered steel head gasket embossment formation process optimizes the embossment radius, reduces stress points, enhances gasket conformability, and provides uniform clamp load distribution. This all results in superior surface contact between block and cylinder head. All head gasket layers/spacers go through an additional process to significantly reduce forming induced stress. Advantages are reduced brittleness in material, increased flexibility and deformation retention. This stabilizes the gasket, resulting in reduced cylinder bore distortion and improved combustion seal fro the extreme cylinder pressures found in high compression, supercharged and turbocharged applications. A proprietary polymer coating ensures the micro-seal of engine coolant and oil fluids.brbrA typical MLS head gasket requires a smoother (30Ra) surface finish than composite head gaskets. Mr. Gasket’s proprietary polymer coating will seal a surface finish twice as rough (60Ra) as a typical MLS head gasket. For high performance street, drag race and oval track use. Mr. Gasket provides a Limited Lifetime Warranty for MLS cylinder head gaskets.
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Edelbrock – Edelbrock Cylinder Head Gasket Set, 7314 (Part No.7314)

Edelbrock Cylinder Head Gasket Set, 7314

from

$133.99
Edelbrock part No: 7314 head gasket is intended for big block Ford engines. This gasket comes as a set and is for 1968-1997, 429 (except boss) and 460 engines. This has a 4.500 bore size, .048 compressed thickness and 12.5 cc volume.
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Edelbrock – Edelbrock Cylinder Head Gasket Set for Ford, 7341 (Part No.7341)

Edelbrock Cylinder Head Gasket Set for Ford, 7341

from

$130.99
“Edelbrock part No. 7341 head gasket is intended for Ford 302 E-Boss and 351w E-Boss (Clevor) conversions using Edelbrock No. 61699 heads. This gasket comes as a set and has a 4.100″” bore size, .041″” compressed thickness and 9.2 cc volume.”
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Edelbrock – Edelbrock Engine Gasket Set, 7365 (Part No.7365)

Edelbrock Engine Gasket Set, 7365

from

$129.99
The Edelbrock No: 7365 head gaskets provide the best sealing solution and are matched to Edelbrock cylinder heads for optimal performance. Edelbrock relies on industry leading head gasket manufactures to ensure our head gasket sets will provide the best fit and sealing properties when used with Edelbrock aluminum cylinder heads. Edelbrock head gaskets are manufactured from high-density materials and feature a superior design that performs under pressure and provides a long-lasting seal, without re-torqueing.
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Edelbrock – Edelbrock Cylinder Head Gasket Set for 1970-74 Small-Block Ford Cleveland Engines, 7328 (Part No.7328)

Edelbrock Cylinder Head Gasket Set for 1970-74 Small-Block Ford Cleveland Engines, 7328

from

$66.99
“Edelbrock part No: 7328 head gasket is intended for Ford 351 Cleveland engines. This gasket comes as a set and has a 4.080″” bore size, .038″” compressed thickness and 8.1 cc volume.”
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Best-Selling 1975 Mercury Cougar Performance Engine Intake Manifold Gaskets

Upgrade your Cougar with one of our 4 best-selling Performance Engine Intake Manifold Gaskets, earning an average 5 stars rating across 5 reviews.

FEL-PRO Performance – FEL-PRO Performance Engine Intake Manifold Gasket Set, 1250 (Part No.1250)

FEL-PRO Performance Engine Intake Manifold Gasket Set, 1250

from

$35.99
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.
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Mr. Gasket – Mr. Gasket Ultra Seal: Intake Gasket, 5838 (Part No.5838)

Mr. Gasket Ultra Seal: Intake Gasket, 5838

from

$53.29
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.
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1230 (Part No.1230)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1230

from

$38.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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FEL-PRO Performance – FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1240 (Part No.1240)

FEL-PRO Performance PERFORMANCE INTAKE MANIFOLD GASKET SET, 1240

from

$39.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions
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Top-Quality Performance Engine Coolant Thermostats for 1975 Mercury Cougars

Choose a high-quality OEM or aftermarket Performance Engine Coolant Thermostat for Mercury Cougars and enjoy top-notch performance from $31.99.

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

Mr. Gasket High Performance Thermostat - 160 Degree Brass & Copper, 4363

from

$31.99
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.
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Top Picks for 1975 Mercury Cougar Performance Intake Manifolds

Invest in one of our 8 durable Performance Intake Manifolds for your 1975 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Weiand – Weiand High-Rise Dual Plane Intake Manifold for Maximum Torque, 8012 (Part No.8012)

Weiand High-Rise Dual Plane Intake Manifold for Maximum Torque, 8012

from

$429.99
Weiand High-Rise Dual Plane Intake Manifold for Maximum Torque, 8012.
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Mr. Gasket – Mr. Gasket Intake Manifold Bolt Set, 958G (Part No.958G)

Mr. Gasket Intake Manifold Bolt Set, 958G

from

$24.49
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.
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Edelbrock – Edelbrock Performer 400 Intake Manifold for 1971-82 Ford 351/M400, 2171 (Part No.2171)

Edelbrock Performer 400 Intake Manifold for 1971-82 Ford 351/M400, 2171

from

$443.99
Edelbrock Performer 400 Intake Manifold for 1971-82 Ford 351/M400, 2171.
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Holley EFI – Holley EFI MFLD KIT FORD 351W HI-RAM 95MM EFI, 300-241 (Part No.300-241)

Holley EFI MFLD KIT FORD 351W HI-RAM 95MM EFI, 300-241

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$1399.99
Holley EFI MFLD KIT FORD 351W HI-RAM 95MM EFI, 300-241.
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Holley EFI – Holley EFI KIT FORD 351W HI-RAM 95MM EFI BLACK, 300-241BK (Part No.300-241BK)

Holley EFI KIT FORD 351W HI-RAM 95MM EFI BLACK, 300-241BK

from

$1399.99
Holley EFI KIT FORD 351W HI-RAM 95MM EFI BLACK, 300-241BK.
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Edelbrock – Edelbrock Performer Ford 400 EGR Intake Manifold, 3771 (Part No.3771)

Edelbrock Performer Ford 400 EGR Intake Manifold, 3771

from

$553.99
3) For off-highway use, non-EGR 4V system with an Edelbrock #8714 4V spacer.
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Edelbrock – Edelbrock RPM Air-Gap Small Block Ford 351W Intake Manifold, 7581 (Part No.7581)

Edelbrock RPM Air-Gap Small Block Ford 351W Intake Manifold, 7581

from

$492.99
Edelbrock part #7581 RPM Air-Gap 351W intake manifold is designed for street and high performance 351-427 c.i.d. 351W Ford V8 applications. The RPM Air-Gap incorporates the same race-winning design that’s been used on our Victor Series competition intakes for decades. The Air-Gap design features an open air space that separates the runners from the hot engine oil resulting in a cooler, denser charge for more power. Larger cross sectional area and a taller carb flange than #7181 for compatibility with large displacement, stroker 351W based engines. Includes bosses for nitrous and rear water crossover. Edelbrock carbs will work with Ford automatic overdrive trans (AOD) when used with Lokar bracket SRK-4000, for more info call (865) 966-2269 or go to www.lokar.com.
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Edelbrock – Edelbrock Performer 351-W Intake Manifold for S/B Ford 351 Windsor, 2181 (Part No.2181)

Edelbrock Performer 351-W Intake Manifold for S/B Ford 351 Windsor, 2181

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$402.99
Edelbrock Performer 351-W Intake Manifold for S/B Ford 351 Windsor, 2181.
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Top-Rated Performance Water Outlets for 1975 Mercury Cougars

Make a smart move for your 1975 Mercury Cougar with products all priced from $24.99 to $37.09.

Mr. Gasket – Mr. Gasket O-Ring Style Chrome Water Neck – 45 Degree, 2662 (Part No.2662)

Mr. Gasket O-Ring Style Chrome Water Neck - 45 Degree, 2662

from

$24.99
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.
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Mr. Gasket – Mr. Gasket Chrome Water Neck, 2664 (Part No.2664)

Mr. Gasket Chrome Water Neck, 2664

from

$37.09
Precision die-cast, these water necks are first polished to a high luster, then chrome plated. Comes with gasket and mounting bolts.
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Top-Rated Performance Engine Brands For Your 1975 Mercury Cougar

When it comes to finding the perfect Performance Engine for your 1975 Mercury Cougar, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 7 trusted brands. We carry the most popular Performance Engine brands including FEL-PRO Performance and Competition Cams, and more, all known for their exceptional customer ratings (average brand rating of 4.2 stars) and competitive prices, as low as $35.99. Purchasing a Performance Engine from us here at Advance Auto Parts is a smart move for both you and your 1975 Mercury Cougar, providing peace of mind with parts that meet or exceed OEM standards.

Popular FEL-PRO Performance 1975 Mercury Cougar Performance Engines

If you’re looking for a top-quality Performance Engine for your 1975 Mercury Cougar, Advance Auto Parts has exactly what you need with our selection of FEL-PRO Performance Performance Engines. We have 3 FEL-PRO Performance Performance Engines in stock for this fitment, all known for their durability and precision fit. With prices starting at just $35.99 and an average cost of $46.66, you’ll find the perfect Performance Engine for your needs and budget. FEL-PRO Performance Performance Engines for the 1975 Mercury Cougar come highly rated, with over 7 customer reviews and an impressive average rating of 4.2 stars. Choosing a FEL-PRO Performance Performance Engine from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
FEL-PRO Performance Engine Intake Manifold Gasket Set, 1250
from $35.99
(4)
FEL-PRO Performance Engine Intake Manifold Gasket Set, 1250
“Great overall intake gasket!!”
FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1011-1
from $52.99
(2)
FEL-PRO Performance Steel core laminate Engine Cylinder Head Gasket, 1011-1
“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”

Top-Quality Competition Cams 1975 Mercury Cougar Performance Engines

For those in search of a high-quality Performance Engine for their 1975 Mercury Cougar, Advance Auto Parts offers a great selection of Competition Cams Performance Engines. With 3 Competition Cams 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 $239.99, with an average price of $312.32, giving you a range of options to suit your budget. Backed by over 4 customer ratings and an average rating of 4.0 stars, Competition Cams Performance Engines provide both reliability and excellent performance. Choosing a Competition Cams Performance Engine from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Competition Cams Magnum 253/253 Hydraulic Flat Cam, 35-331-4
from $309.99
(1)
Competition Cams Magnum 253/253 Hydraulic Flat Cam, 35-331-4
“Good service. Great people working there.”
Competition Cams Xtreme Energy 218/224 Hydraulic Flat Cam and Lifter Kit, CL35-238-3
from $386.99
(2)
Competition Cams Xtreme Energy 218/224 Hydraulic Flat Cam and Lifter Kit, CL35-238-3
“Replacement head bolts, great value”

FAQs for 1975 Mercury Cougar Performance Engines

What are the best-selling Performance Engines for 1975 Mercury Cougars?

Out of 129 Performance Engines that fit 1975 Mercury Cougars, the following parts are the top sellers:

What’s the price range for 1975 Mercury Cougar Performance Engines?

The prices of Performance Engines for the 1975 Mercury Cougar range from $14.99 up to $2,168.99 for the most premium parts.

What is the average price of a Performance Engine for a 1975 Mercury Cougar?

The average price for Performance Engines for the 1975 Mercury Cougar is $412.01. 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 1975 Mercury Cougar?

Does Advance Auto Parts sell Performance Engines for any other 1975 Mercury models?

Yes. We stock Performance Engines for 6 other popular 1975 Mercury models. Some of the most popular are 1975 Grand Marquis Performance Engines, 1975 Montego Performance Engines, 1975 Capri Performance Engines, 1975 Marquis Performance Engines, and 1975 Comet Performance Engines.

What types of Performance Engines do you sell for my 1975 Mercury Cougar?

As of 8/2/26, these are some of the most in-demand types of Performance Engines for a 1975 Mercury Cougar:

Can I get help with 1975 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.