1971 Mercury Cougar Differentials

Essential 1971 Mercury Cougar Differentials

Yukon Gear – The Carrier Bearing Puller (Part No.56034)

The Carrier Bearing Puller

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$689.99
The Yukon carrier bearing Puller works with an impact gun to quickly and safely remove carrier bearings without damaging them. This unit comes with a handy bench top stand and works with up to most standard one ton applications. This unit is works with differentials up to one-ton applcations. It is not compatible with Dana 70HD, Dana 80, 10.25″ & 10.5″ Ford, or GM & Chrysler 11.5″ differentials.

Product Features:
  • Carrier bearing puller
  • Works with an impact gun to safely and easliy remove carrrier bearings
  • Not compatible with Dana 70HD, Dana 80, Ford 10.25″ and 10.5″ or Gm and Chrysler 11.5″ applications
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National – Bearings (Part No.M86610)

Bearings

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$9.49
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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Yukon Gear – Pinion Support Bolt For 8" And 9" Ford (Part No.33242)

Pinion Support Bolt For 8" And 9" Ford

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$6.99
Pinion support bolt for 8″ and 9″ Ford.

Product Features:
  • Pinion support bolt for Ford 8″ and 9″
  • 3/8″ x 24 thread
  • 1.0″ long
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USA Standard Gear – Master Overhaul Kit for the Ford 8" Differential w/ HD Posi (Part No.37029)

Master Overhaul Kit for the Ford 8" Differential w/ HD Posi

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$249.99
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 8″ with aftermarket positraction
  • 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, thread locker, marking compound with brush and gasket.
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Felpro – Differential Carrier Gasket (Part No.RDS 13270)

Differential Carrier Gasket

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$4.49
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 – Pinion Nut (Part No.33154)

Pinion Nut

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$7.99
Pinion nut for Ford 7.5″, 8″, 8.8″, 9 3/8″ & 9″. 1 1/6″ socket, 3/4″ x 20 thread.

Product Features:
  • Pinion nut for Ford 7.5″, 8″ and 9″
  • 3/4″ x 20 thread
  • 1 1/6″ socket
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Yukon Gear – Trac Loc Spring For Ford 7.5" (Part No.33514)

Trac Loc Spring For Ford 7.5"

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$67.99
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:
  • Trac Loc spring
  • Fits Ford 7.5″
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Yukon Gear – Steel Spool For Ford 9" With 35 Spline Axles, Small Bearing (Part No.32098)

Steel Spool For Ford 9" With 35 Spline Axles, Small Bearing

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$404.99
Yukon Performance steel spool for 9″ Ford with 35 spline axles. Spool uses 1.785″ journal bearings. fits 2.8″ and 3.0″ cases. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.

Product Features:
  • Fits Ford 9″ with 35 spline axles
  • Small bearing journal to fit 2.968″ and 3.062″ dropouts
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
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Yukon Gear – One (1) Specialty Bearing Race To Adapt Small Bearing Journal Into A 3.250" Dropout (Part No.32157)

One (1) Specialty Bearing Race To Adapt Small Bearing Journal Into A 3.250" Dropout

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$51.99
One (1) specialty bearing race to adapt small bearing journal into a 3.250″ dropout. This adapter allows the use of a 28 or 31 spline carrier, positraction or locker in a 3.250″ dropout. This is a perfect solution if you are currently running 28 or 31 spline axles but are looking to upgrade to 35 spline later, or are stepping down from 35 spline but don’t want to buy a new dropout.

Product Features:
  • Carrier race
  • Fits Ford 9″
  • Conversion race to install small bearing carrier into 3.250″ dropout
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Pro-King – Differential Pinion Shim Kit (Part No.742G200A)

Differential Pinion Shim Kit

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$18.49
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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Yukon Gear – Trac-Loc For Ford 8" Wtih 28 Spline Axles – Street Design (Part No.26002)

Trac-Loc For Ford 8" Wtih 28 Spline Axles - Street Design

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$889.99
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-Trac Loc uses a nodular case, billet side hat, and forged internals for higher strength than stock Trac-Locs. The units use composite clutches for high performance and long life. All units are Rebuildable. Yukon offers a one year warranty against manufacturing defects.

Product Features:
  • Fits Ford 8″ with 28 spline axles
  • Trac Loc positraction
  • Clutch style positraction
  • Street design
  • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
  • Fully rebuildable
  • Assembled in the USA
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Yukon Gear – Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt (Part No.33043)

Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt

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$5.99
Ford 8″ & 9″ standard Open, AG, & Detroit locker ring gear bolt, 1.0″ long, Ford.

Product Features:
  • Ring gear bolt for Ford 8″ and 9″
  • For use with standard open carrier, Auburn Gear limited slip and Detroit Locker
  • 1.0″ long
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Yukon Gear – Grizzly Locker For Ford 8" With 28 Spline Axles (Part No.28006)

Grizzly Locker For Ford 8" With 28 Spline Axles

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$931.99
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! 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!

Product Features:
  • Fits Ford 8″ with 28 spline axles
  • Patented internal design reduces common locker failures
  • 8620 internals for added strength
  • Assembled in the USA
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Yukon Gear – Bearing Race Driver (Part No.56017)

Bearing Race Driver

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$215.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits HM89410 race
  • All steel construction
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Yukon Gear – Outer Oil Slinger For Ford 7.5", 8.8", 9", 10.25" (Part No.33022)

Outer Oil Slinger For Ford 7.5", 8.8", 9", 10.25"

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$8.99
Replacement outer oil slinger for Ford 7.5″, 8.8″, 9″, 10.25″, Nissan Titan rear, Dana 44 Rubicon & 44 JK non-Rubicon.

Product Features:
  • Outer oil slinger for Ford 10.25″, 7.5″, 8.8″ and 9″ also Jeep JK and Nissan Titan rear
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FAG US – TAPERED ROLLER BEARI (Part No.KT45)

TAPERED ROLLER BEARI

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$24.29
TAPERED ROLLER BEARI

Yukon Gear – Ford 9" 3.062" Aluminum Case, HD Dropout Housing (Part No.32034)

Ford 9" 3.062" Aluminum Case, HD Dropout Housing

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$729.99
9″ Yukon 3.062″ aluminum case, HD dropout housing with forged caps. The Yukon aluminum dropouts feature a adjuster lock which is offset 90 degrees, offering an uninterrupted bearing cap for higher strenth. Made from A356-T6 aluminum and featuring a through-bolt desgin, this dropout is built for high horsepower & tall tires.Rated up to 1000HP!

Product Features:
  • Fits Ford 9″
  • 3.062″ carrier race diameter
  • A356-T6 aluminum
  • Thru-bolt design added strength
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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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Yukon Gear – 8" & 9" Ford 5-Tab Clutches (Part No.16028)

8" & 9" Ford 5-Tab Clutches

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$374.99
8″ & 9″ Ford 5-Tab clutches (early Equalock).

Product Features:
  • Clutch kit
  • Fit Ford 9″ Equa Loc positraction
  • 5 outer tabs
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Yukon Gear – 9" Ford Gasket (Part No.23012)

9" Ford Gasket

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$11.99
9″ Ford gasket.

Product Features:
  • Dropout gasket
  • Fits Ford 9″
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Yukon Gear – Pinion Seal For 7.5", 8.8", And 9.75" Ford, And Also 1985-’86 9" Ford (Part No.30037)

Pinion Seal For 7.5", 8.8", And 9.75" Ford, And Also 1985-'86 9" Ford

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$8.99
Pinion seal for 7.5″, 8.8″, and 9.75″ Ford, and also 1985-’86 9″ Ford.Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits Ford 7.5″, 8.8″ and some 9.75″
  • 2.785″ O.D.
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Yukon Gear – Purple Aluminum Pinion Support For 9" Ford Daytona (Part No.32036)

Purple Aluminum Pinion Support For 9" Ford Daytona

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$264.99
Product Features:
  • Fits Ford 9″ with 28 spline pinion
  • Larger inner pinion bearing reduces gear deflection under high load
  • Races installed
  • 6061 aluminum
  • Annodized purple
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Yukon Gear – Forged Yoke For Ford 9" With 35 Spline Pinion And A 1350 U/Joint Size (Part No.41065)

Forged Yoke For Ford 9" With 35 Spline Pinion And A 1350 U/Joint Size

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$209.99
Yukon forged yoke for Ford 9″ with 35 spline pinion and a 1350 U/joint size (stronger than billet). 3.625″ snap ring span, 1.188″ cap diameter. Outside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits Ford 9″
  • 35 spline
  • 1350 u-joint size
  • 3.625″ snap ring span
  • 1.188″ cap diameter
  • Outside snap ring design
  • U-bolt style
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Yukon Gear – Pinion Install Kit For Ford 7.5" Differential (Part No.13039)

Pinion Install Kit For Ford 7.5" Differential

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$184.99
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, 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 7.5″
  • 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 – Standard Open Side Gear And Thrust Washer For 7.5" Ford (Part No.33295)

Standard Open Side Gear And Thrust Washer For 7.5" Ford

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$19.99
Standard Open side gear thrust washer for 7.5″ Ford.

Product Features:
  • Side gear thrust washer
  • Fits Ford 7.5″
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Yukon Gear – 3.062" Side Adjuster For Ford 9" (Part No.32139)

3.062" Side Adjuster For Ford 9"

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$94.99
3.062″ side adjuster, Only Fits Yukon Ford 9″ Drop Out, new design ONLY.

Product Features:
  • Side adjuster
  • Fits Ford 9″
  • 3.062″ designs only
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Yukon Gear – Pinion Gear And Thrust Washer (0.875" Shaft) For 8.8" Ford (Part No.33299)

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

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

Product Features:
  • Pinion gear thrust washer for Ford 8.8″
  • 0.875″ diameter cross pin shaft applications only
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Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.4104)

Differential Pinion Solid Spacer Kit w/Shims

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$10.49


Product Features:
  • SOLID SPACER FORD 8.8″ & 9″
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1971 Mercury Cougar Differentials

Maybe you’re in the middle of a full rebuild of that 1971 Mercury Cougar. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 348 different Differentials in our inventory ranging from $1.99 to $1,566.99. That means you can find the exact parts or products you need to keep that 1971 Mercury Cougar running smoothly.

Differentials are only as good as their brand. We stock 13 different brands to make sure you have plenty of trusted parts to choose from for your 1971 Mercury Cougar. Driveworks, Yukon Gear, and FELPRO 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 1971 Mercury Cougar, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 493 reviews in this category, some of the top rated parts include Multi Purpose Seal with 5.0 stars and No-Slip Traction System with 5.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1971 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 1971 Mercury Cougar Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1971 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 Felpro Differentials

We carry Felpro parts in our stock across Automatic Transmission Differential Cover Gaskets categories, plus more. For a 1971 Mercury Cougar, our most popular Felpro Differentials include:
Differential Carrier Gasket
from $8.49
(9)
Differential Carrier Gasket
Automatic Transmission Differential Cover Gaskets

Top 1971 Mercury Cougar Differentials from Driveworks

Driveworks products are another trusted brand when it comes to Differentials for your 1971 Mercury Cougar. Popular Driveworks parts include:
Tapered Cone/Cup Wheel Bearing Set
from $13.99
(14)
Tapered Cone/Cup Wheel Bearing Set
Front Differential Pinion Bearings
Oil Seal
from $4.29
(1)
Oil Seal
Differential Pinion Seals

FAQs for 1971 Mercury Cougar Differentials

What are the most purchased Differentials for the 1971 Mercury Cougar?

Out of 348 Differentials for the 1971 Mercury Cougar, the most popular in our inventory are:
3 Qt - 80W90 Conventional Gear Oil With Posi Additive
from $57.99
This product is not rated
3 Qt – 80W90 Conventional Gear Oil With Posi Additive
Differential Oil
Pinion Crush Sleeves
from $5.99
This product is not rated
Pinion Crush Sleeves
Differential Crush Sleeves
Bearings
from $9.49
This product is not rated
Bearings
Rear Differential Pinion Bearings

What are the top-rated 1971 Mercury Cougar Differentials?

Top-rated Differentials for your 1971 Mercury Cougar based on customer reviews/ratings are:
Multi Purpose Seal
from $15.79
(3)
Multi Purpose Seal
“good quality”
No-Slip Traction System
from $551.99
(1)
No-Slip Traction System
“Installed, no issues, works great.”
Differential Pinion Nut
from $6.49
(1)
Differential Pinion Nut
“If a pinion nut is ever removed from the pinion shaft, it is recommended NOT to reuse it. Replace it with a BRAND NEW nut, even if the old nut is rel”