1990 Mercury Cougar Differentials

Essential 1990 Mercury Cougar Differentials

Yukon Gear – Grizzly Locker, Ford 9" With 35 Splines, For Use With Load Bolt Dropout (Part No.28012)

Grizzly Locker, Ford 9" With 35 Splines, For Use With Load Bolt Dropout

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$993.99
The Yukon Grizzly Locker is the ultimate in locking differentials for street, off-road, & drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It’s patented design reduces common locker failures. All units assembled in the USA! This unit has been machined for use in dropouts with a load-bolt. All Grizzly Lockers are backed by the best warranty in the business! Yukon covers the replacement unit and covers any collaterally damaged parts and associated labor, up to $2,000! This locker also fits 9.5″ & 10″ dropouts.

Product Features:
  • Fits Ford 9″ with 35 spline axles and loadbolt housing
  • Patented internal design reduces common locker failures
  • 8620 internals for added strength
  • Assembled in the USA
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National – Shaft Repair Sleeve (Part No.99157)

Shaft Repair Sleeve

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$37.49
National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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Pro-King – Differential Internal Nest Kit (Part No.761A717)

Differential Internal Nest Kit

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$309.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
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FAG US – TAPERED ROLLER BEARI (Part No.KT17)

TAPERED ROLLER BEARI

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$15.29
TAPERED ROLLER BEARI

Motive Gear – Differential Mini Spool (Part No.MS88-31)

Differential Mini Spool

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$101.99


Product Features:
  • MINI SPOOL 8.8 FORD 31SPL
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Yukon Gear – Bearing Race Driver (Part No.56023)

Bearing Race Driver

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$219.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits M88010 race
  • All steel construction
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Motive Gear – Differential Pinion Seal (Part No.7044NA)

Differential Pinion Seal

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$12.99
All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
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Yukon Gear – Side Gear And Thrust Washer (0.875" Shaft) For 8.8" Ford (Part No.33300)

Side Gear And Thrust Washer (0.875" Shaft) For 8.8" Ford

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$11.99
Side gear thrust washer (0.875″ shaft) for 8.8″ Ford.

Product Features:
  • Side gear thrust washer for Ford 8.8″
  • 0.875″ diameter cross pin shaft applications only
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Dorman – Help – Differential Shaft Lock Bolt (Part No.81048)

Differential Shaft Lock Bolt

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$5.99
This differential pinion shaft lock bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this differential pinion shaft lock bolt matches the fit and function of the factory part on specified years, makes and models.
  • Ideal solution – this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Yukon Gear – 8.8" Ford Tracloc Clutch Set, Both Sides (Part No.16018)

8.8" Ford Tracloc Clutch Set, Both Sides

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$241.99
8.8″ Ford TracLoc (with short ears–for late models only) clutch set, both sides.

Product Features:
  • Clutch kit
  • Fit Ford 8.8″ Trac Loc positraction
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Felpro – Differential Cover Gasket (Part No.RDS 55081)

Differential Cover Gasket

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$15.79
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Unsurpassed quality you can trust
  • Validated for fit, form and function
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Yukon Gear – 9" Ford Pinion Nut, 35 Spline Large Pinion Oversize (Part No.33161)

9" Ford Pinion Nut, 35 Spline Large Pinion Oversize

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$26.99
9″ Ford pinion nut, 35 spline Large pinion oversize.

Product Features:
  • Pinion nut
  • Fits Ford 9″ with 35 spline pinion
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Yukon Gear – 8.8" Ford 7/8" Diameter Notched Cross Pin Shaft (.875" For ’86 And Newer) (Part No.33434)

8.8" Ford 7/8" Diameter Notched Cross Pin Shaft (.875" For '86 And Newer)

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$57.99
8.8″ Ford 7/8″ diameter Notched cross pin shaft (.875″ for ’86 and newer). This cross pin shaft is not compatible with Powertrax Lock Rights or Spartan Lockers.

Product Features:
  • Notched cross pin shaft for Ford 8.8″
  • 0.875″ diameter
  • Not compatible with Spartan Locker or Powertrax Lock Right
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Motive Gear – Differential Ring and Pinion (Part No.F9-471A)

Differential Ring and Pinion

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$199.99
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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Felpro – Differential Cover Gasket (Part No.RDS 55460)

Differential Cover Gasket

from

$8.29
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Unsurpassed quality you can trust
  • Validated for fit, form and function
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Royal Purple – MaxGear SAE 75W140 High Performance Gear Oil w/Friction Modifier Additive, 1 QT (Part No.01301)

MaxGear SAE 75W140 High Performance Gear Oil w/Friction Modifier Additive, 1 QT

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$25.99
Max Gear is recommended for truck and automotive differentials, outboard motor lower units or in rear axles or manual transmissions requiring an API fluid. Max Gear is a high performance automotive gear oil designed to provide maximum protection to heavily loaded gears while increasing power throughput through the drive train. Max Gear virtually eliminates both gear and bearing wear-even under severe squeeze film conditions caused by extremely high loads, sudden shock loads or low RPMs. Slippery, synthetic molecules not only reduce wear and friction but significantly increase Max Gear’s cold weather fluidity and lubricity, making it the ideal choice for vehicles operating in cold climates. Gears run smoother, quieter, cooler and longer without overhauls. It is noncorrosive to both ferrous and nonferrous metals.

Product Features:
  • Maximizes horsepower
  • Extends gear and bearing life
  • Reduces operating temperature
  • Lower coefficient of friction
  • Superior corrosion protection
  • Separates rapidly from water
  • For use with open, limited-slip and locking differential
  • Contains limited-slip friction modifier
  • Made in USA
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Yukon Gear – Yoke (Short, For Daytona Support) For Ford 9" With 28 Spline Pinion And A 1330 U/Joint Size (Part No.41055)

Yoke (Short, For Daytona Support) For Ford 9" With 28 Spline Pinion And A 1330 U/Joint Size

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$203.99
Yukon yoke (short, for Daytona support) for Ford 9″ with 28 spline pinion and a 1330 U/joint size. 4″ length. 3.625″ snap ring span, 1.125″ cap diameter. Outside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits Ford 9″
  • 28 spline
  • 1330 u-joint size
  • Outside snap ring design
  • 3.625″ snap ring span
  • 1.125″ cap diameter
  • U-bolt style
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Driveworks – Taper Bearing Cup (Part No.S-LM-501314)

Taper Bearing Cup

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$7.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Yukon Gear – Pinion Gear And Thrust Washer (0.750" Shaft) For 8.8" Ford (Part No.33297)

Pinion Gear And Thrust Washer (0.750" Shaft) For 8.8" Ford

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$8.99
Pinion gear thrust washer (0.750″ shaft) for 8.8″ Ford.

Product Features:
  • Pinion gear thrust washer
  • Fits Ford 8.8″
  • 0.750″ I.D.
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Yukon Gear – Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5" (Part No.55001)

Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5"

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$59.99
Product Features:
  • Super carrier shim kit for Ford 7.5″, GM 7.5″, 7.625″, 7.6″ IFS, 7.6″ IRS, 7.75″, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and GM 8.5″ front and rear
  • Interlocking design makes installation much easier
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Yukon Gear – Cover Bolt For Ford 7.5", 8.8" & 9.75" (Part No.33554)

Cover Bolt For Ford 7.5", 8.8" & 9.75"

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$6.99
Yukon 1541H alloy replacement rear axle for Dana 60, 70, and 80, 35 spline. (40″ to 43.5″) Full float axle (8×3.96″ ). Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects. This is a full-floating axle.

Product Features:
  • 35 spline
  • 8 x 3.96″ bolt pattern
  • Cut to length design fits 40″-43.5″ applications
  • Fits Dana Spicer 60, 70 and 80
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Yukon Gear – Preload Shim Kit For Chrysler 8.75" & Ford 9" (Part No.55030)

Preload Shim Kit For Chrysler 8.75" & Ford 9"

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$21.99
8.75″ Chrysler & 9″ Ford preload shim kit.

Product Features:
  • Preload shim kit for Ford 9″ and Chrysler 8.75″ with ’41’ and ’42’ case housing
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Yukon Gear – Ford 8" & 9" Tracloc Ring Gear Bolt (Part No.33044)

Ford 8" & 9" Tracloc Ring Gear Bolt

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$4.99
Ford 8″ & 9″ TracLoc ring gear bolt, 1-1/4″ long.

Product Features:
  • Ring gear bolt for Ford 8″ and 9″
  • For use with Trac Loc limited slip
  • 1.25″ long
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Yukon Gear – Super Carrier Shim Kit For Ford 8.8", GM 12 Bolt Car & Truck, 8.6 & Vette (Part No.55002)

Super Carrier Shim Kit For Ford 8.8", GM 12 Bolt Car & Truck, 8.6 & Vette

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$59.99
Product Features:
  • Super carrier shim kit for Ford 8.8″, GM 12 bolt passenger car and truck, GM 8.0″, 8.6″, 8.6″ IRS and 1963-1979 Corvette
  • Interlocking design makes installation much easier
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Motive Gear – Differential Gear Install Kit (Part No.F9IK)

Differential Gear Install Kit

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$33.99
Product Features:
  • MINI INSTALL KIT FORD 9″
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Yukon Gear – Pinion Install Kit For Ford Daytona 9" Differential (Part No.13048)

Pinion Install Kit For Ford Daytona 9" Differential

from

$294.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, pinion nut, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:
  • Fits Ford 9″ with Daytona pinion support
  • Included are pinion bearings and races, pinion seal, pinion nut, crush sleeve, complete pinion shim kit, and marking compound with brush.
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Yukon Gear – Dura Grip For Ford 7.5" (Part No.26034)

Dura Grip For Ford 7.5"

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$789.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 in

Product Features:
  • Fits Ford 7.5″
  • 28 spline
  • 4-spring, clutch style positraction
  • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
  • Fully rebuildable
  • Assembled in the USA
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USA Standard Gear – Master Overhaul Kit for the Ford 9" LM603011 Differential with Daytona Pinion Support (Part No.37038)

Master Overhaul Kit for the Ford 9" LM603011 Differential with Daytona Pinion Support

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$273.99
USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.

Product Features:
  • Fits Ford 9″ with LM603011 carrier races and Daytona pinion support
  • Uses Koyo bearings and races
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, pilot bearing, thread locker, marking compound with brush and gasket.
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1990 Mercury Cougar Differentials

Maybe you’re in the middle of a full rebuild of that 1990 Mercury Cougar. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 157 different Differentials in our inventory ranging from $0.99 to $1,566.99. That means you can find the exact parts or products you need to keep that 1990 Mercury Cougar running smoothly.

Differentials are only as good as their brand. We stock 14 different brands to make sure you have plenty of trusted parts to choose from for your 1990 Mercury Cougar. Royal Purple, Valvoline, and Yukon Gear 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 Differentials for your 1990 Mercury Cougar, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 612 reviews in this category, some of the top rated parts include Differential Shaft Lock Bolt with 4.0 stars and Differential Master Bearing Kit – Timken with 4.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1990 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!

Differentials Brands To Make Your 1990 Mercury Cougar Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1990 Mercury Cougar demands trusted brand parts and products to keep it running. Many trusted brands of Differentials 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 Differentials brands and parts.

Popular Powertrax Differentials

We carry Powertrax parts in our stock across Complete Differentials categories, plus more. For a 1990 Mercury Cougar, our most popular Powertrax Differentials include:
Lock Right Locker
from $444.99
(1)
Lock Right Locker
Complete Differentials

FAQs for 1990 Mercury Cougar Differentials

What are the most purchased Differentials for the 1990 Mercury Cougar?

Out of 157 Differentials for the 1990 Mercury Cougar, the most popular in our inventory are:
Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart
from $19.99
This product is not rated
Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart
Differential Oil

What are the top-rated 1990 Mercury Cougar Differentials?

Top-rated Differentials for your 1990 Mercury Cougar based on customer reviews/ratings are:
Differential Shaft Lock Bolt
from $5.99
(11)
Differential Shaft Lock Bolt
“great”
Differential Master Bearing Kit - Timken
from $137.99
(8)
Differential Master Bearing Kit – Timken
“These Timken bearings work great in my 10 second drag car.”
Bearings
from $23.99
(7)
Bearings
“Good price”