1990 Mercury Cougar Performance Engines
Keep Your 1990 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 1990 Mercury Cougar looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Coolant Thermostats, Performance Engine Rocker Arms, and Performance Engine Push Rods. 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.
Competitive Prices and Extensive Inventory
The average price for a 1990 Mercury Cougar Performance Engine at Advance Auto Parts is around $69.38, with a range that starts at $13.99 and goes up to $225.99. With 9 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like High Performance Thermostat, Magnum 7.150" Long, .080" Wall, 5/16" Diameter Pushrod Set, and Magnum 7.150" Long, .080" Wall, 5/16" Diameter Pushrod start at just $15.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Performance Engine, don’t forget to check out other key components like Performance Distributors and Performance Oil Filters. At Advance Auto Parts, we’re here to help you keep your 1990 Mercury Cougar in peak condition, inside and out.
Find Your Specific 1990 Mercury Cougar Performance Engines
Looking for the perfect Performance Engine for your 1990 Mercury Cougar? 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 Cougar. Whether you’re driving a 1990 model or another popular model year like
1988,
1989,
1991,
1992,
1993,
1994,
1995,
1996, and
1997, 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 1990 Mercury Cougar Performance Engines
Competition Cams – 1 Spring (Part No.26113-1)
from
$24.99
1 Spring
Competition Cams – High Energy Rocker Set With 1.6 Ratio For ’68-’77 Ford 289-351W With 3/8" Stud (Part No.1231-16)
from
$232.99
Perfect for stock or High Energy camshaft equipped engines, our High Energy rockers eliminate slop and feature a long slot for high lift cams. These 1231 rockers feature a 1.6 ratio for 3/8″ stud ’78-’77 Ford 289, 302 and 351 Windsor.
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Competition Cams – Rocker Arms,FS/FW 1.6 7/16 Ultra Pro Mag (Part No.1632-16)
from
$476.99
Rocker Arms,FS/FW 1.6 7/16 Ultra Pro Mag
Competition Cams – Ultra Pro Magnum Xd Rockers With 1.7 Ratio For Ford 289, 302, 351W With 7/16" Stud (Part No.1834-16)
from
$649.99
Machined from 8650 steel with a billet pushrod seat insert, these Ultra Pro Magnum XD rockers can handle up to 1,000 lbs. of spring pressure. These 1834 rockers feature a 1.7 ratio for use with 7/16″ stud Ford 289, 302 and 351 Windsor.
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Competition Cams – Magnum Roller Rocker Arms for Ford; 3/8" Stud, 1.6 Ratio (Part No.1431-16)
from
$350.99
These Magnum Roller Rocker Arms for Ford V8 289-351W (Rail Type) 1968-89 applications are the ultimate street rocker. With a 3/8″ stud diameter and 1.6 ratio, they are designed for serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly steel, which is a superior material that will not flex and assures maximum lift. Their roller tip reduces friction, while stiff design and superior ratio accuracy yield more effective valve lift. With a 15 to 30 horsepower increase over other rocker arms, Magnum Roller Rockers are perfect for performance applications with less than 350 lbs. open spring pressure. Don’t accept inferior products or cheap knock-offs, look for the COMP Cams logo stamped into the underside of every Magnum Rocker.
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Product Features:
- Ultimate street rocker designed for serious performance enthusiasts
- Constructed from 8620 chromemoly steel, a superior material that will not flex and assures maximum lift
- Roller tip reduces friction while stiff design and superior ratio accuracy yields more effective valve lift
- 15 to 30 horsepower increase over stock rocker arms
- Use in any applications with less than 350 lbs. open spring pressure
Competition Cams – ROCKER ARMS, DIE CAST ALUM SMALL BLOCK FORD 1.6 1 ST (Part No.17043-16)
from
$249.99
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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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.
Competition Cams – Magnum Roller 1.72 Ratio Rocker Arm for BBC, Ford 429-460, 351C/M with 7/16" Stud (Part No.1411-1)
from
$23.29
Magnum Roller 1.72 Ratio Rocker Arm for BBC, Ford 429-460, 351C/M with 7/16" Stud
Mr. Gasket – High Performance Thermostat (Part No.4365)
from
$32.49
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.
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- 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
Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)
from
$29.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.
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- 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
Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)
from
$29.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.
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- 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
Edelbrock – Pushrod Set for Ford 289-302 (Part No.9655)
from
$219.99
Edelbrock part #9655 Pushrods are designed for small-block Ford 289-302 V-8 engine applications. These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability. They have precis
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- 6.4 in. Length
- 0.312 in. Diameter
- 4130 Chromoly Steel Material
- Black Oxide Finish
- Made In The USA
Edelbrock – Pushrod Set for Ford 351M/400 V-8 engine applications (Part No.9633)
from
$198.99
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- 9.5 in. Length
- 0.312 in. Diameter
- 4130 Chromoly Steel Material
- Black Oxide Finish
- Made In The USA
Competition Cams – High Energy 6.881" Long, 5/16" Diameter Pushrod – Set of 16 (Part No.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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- 5/16″ diameter, 6.881″ length for Small Block Ford 255 and 302, ’65-up with Flat Tappet Cam
- Best choice when building street rods, RVs or daily drivers
- Meet or exceed all OE pushrod specifications
- Mate perfectly with High Energy and Magnum Rockers
- Durable one-piece construction
Competition Cams – Magnum 8.400" Long, .080" Wall, 5/16" Diameter Pushrod (Part No.7502-1)
from
$14.99
Magnum 8.400" Long, .080" Wall, 5/16" Diameter Pushrod
Competition Cams – High Energy 8.616" Long, 5/16" Diameter Pushrod Set (Part No.7844-16)
from
$48.99
High Energy 8.616" Long, 5/16" Diameter Pushrod Set
Edelbrock – Pushrod Set for Ford 289-302 (Part No.9658)
from
$216.99
Edelbrock part #9658 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
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Product Features:
- 6.43 in. Length
- 0.312 in. Diameter
- 4130 Chromoly Steel Material
- Black Oxide Finish
- Made In The USA
Competition Cams – Magnum 8.680" Long, .080" Wall, 5/16" Diameter Pushrod (Part No.7651-1)
from
$18.99
Magnum 8.680" Long, .080" Wall, 5/16" Diameter Pushrod
Competition Cams – High Energy 9.500" Long, 5/16" Diameter Pushrod Set (Part No.7837-16)
from
$42.99
High Energy 9.500" Long, 5/16" Diameter Pushrod Set
Edelbrock – Pushrod Set for Small Block Ford 289-302 V-8, Black Oxide finish (Part No.9632)
from
$221.99
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- Case-Hardened Tubing
- Surface Hardening
- Welded Ends
- 0.3125 in. Diameter
- Use with or without Hardened Steel Guideplates
Competition Cams – High Energy 6.248" Long, 5/16" Diameter Pushrod Set (Part No.7826-16)
from
$49.99
High Energy 6.248" Long, 5/16" Diameter Pushrod Set
Popular 1990 Mercury Cougar Performance Engines Categories
Most Popular Performance Engine Coolant Thermostats for 1990 Mercury Cougars
Enhance your 1990 Mercury Cougar with one of the 3 Performance Engine Coolant Thermostats we have in stock, starting at just $29.99.
Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)
from
$29.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.
Product Features:
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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
Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)
from
$29.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.
Product Features:
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Product Features:
- Opens at 160 Degrees
- Designed to Resist Large Variations of Coolant Pressure at High RPM
- Fully opens at Correct Temperature Consistently Regardless of engine RPM
- For High Performance Street, Drag Race, and Oval Track
- Copper & Brass Construction – Resists Corrosion
- High Flow
Mr. Gasket – High Performance Thermostat (Part No.4365)
from
$32.49
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.
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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
Best-Selling 1990 Mercury Cougar Performance Engine Rocker Arm
Upgrade your Cougar with our best-selling Performance Engine Rocker Arm.
Competition Cams – Ultra Pro Magnum Rocker Arm with 1.7 Ratio for Ford 3.8L V6 with 3/8" Stud (Part No.1619-1)
from
$50.99
This Ultra Pro Magnum rocker is made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.7 ratio, this rocker fits Ford 3.8L V6 with a 3/8″ diameter stud.
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Top-Quality Performance Engine Push Rods for 1990 Mercury Cougars
Choose a high-quality OEM or aftermarket Performance Engine Push Rod for Mercury Cougars and enjoy top-notch performance from $15.99.
Competition Cams – Magnum 7.150" Long, .080" Wall, 5/16" Diameter Pushrod Set (Part No.7635-16)
from
$225.99
Magnum 7.150" Long, .080" Wall, 5/16" Diameter Pushrod Set
Competition Cams – Magnum 7.150" Long, .080" Wall, 5/16" Diameter Pushrod (Part No.7635-1)
from
$15.99
Magnum 7.150" Long, .080" Wall, 5/16" Diameter Pushrod
Top Picks for 1990 Mercury Cougar Performance Engine Valve Springs
Invest in one of our 2 durable Performance Engine Valve Springs for your 1990 Mercury, knowing you’re getting trusted brands and expert craftsmanship.
Competition Cams – 12 Springs (Part No.26918-12)
from
$199.99
12 Springs
Competition Cams – 1 Spring (Part No.26918-1)
from
$24.99
1 Spring
Our Performance Engine Valve Lifters for 1990 Mercury Cougars
Make a smart move for your 1990 Mercury Cougar with our Performance Engine Valve Lifter for $13.99.
Competition Cams – High Energy Hydraulic Flat Lifter for Ford 289-351withC/M-400M, 429-460 and V6. (Part No.832-1)
from
$13.99
High Energy Hydraulic Flat Lifter for Ford 289-351withC/M-400M, 429-460 and V6.
FAQs for 1990 Mercury Cougar Performance Engines
What are the best-selling Performance Engines for 1990 Mercury Cougars?
Out of 9 Performance Engines that fit 1990 Mercury Cougars, the following parts are the top sellers:
- High Performance Thermostat (22903641) – $32.49
- Magnum 7.150" Long, .080" Wall, 5/16" Diameter Pushrod Set (50289653) – $225.99
- Magnum 7.150" Long, .080" Wall, 5/16" Diameter Pushrod (50289260) – $15.99
What’s the price range for 1990 Mercury Cougar Performance Engines?
The prices of Performance Engines for the 1990 Mercury Cougar range from $13.99 up to $225.99 for the most premium parts.
What is the average price of a Performance Engine for a 1990 Mercury Cougar?
The average price for Performance Engines for the 1990 Mercury Cougar is $69.38. 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?
What are the cheapest Performance Engines for my 1990 Mercury Cougar?
The cheapest 1990 Mercury Cougar Performance Engines we carry are:
- High Energy Hydraulic Flat Lifter for Ford 289-351withC/M-400M, 429-460 and V6. (50286534) – $13.99
- Magnum 7.150" Long, .080" Wall, 5/16" Diameter Pushrod (50289260) – $15.99
- 1 Spring (50287858) – $24.99
- High Performance 180 Degree Thermostat for Increased Flow (17360033) – $29.99
- High Performance Thermostat – 160 Degree Brass & Copper (17360031) – $29.99
Does Advance Auto Parts sell Performance Engines for any other 1990 Mercury models?
Yes. We stock Performance Engines for 3 other popular 1990 Mercury models. Some of the most popular are 1990 Grand Marquis Performance Engines, 1990 Colony Park Performance Engines, 1990 Sable Performance Engines, and 1990 Topaz Performance Engines.
What are the top-rated Performance Engines that fit the 1990 Mercury Cougar?
The one 1990 Mercury Cougar Performance Engine we have in stock is the High Energy Hydraulic Flat Lifter for Ford 289-351withC/M-400M, 429-460 and V6.. It costs $13.99.
What types of Performance Engines do you sell for my 1990 Mercury Cougar?
As of 6/2/26, these are some of the most in-demand types of Performance Engines for a 1990 Mercury Cougar:
Can I get help with 1990 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.