1979 Mercury Cougar Differentials

Essential 1979 Mercury Cougar Differentials

Yukon Gear – 9" Ford Pinion Nut, 35 Spline Large Pinion Oversize (Part No.33161)

9" Ford Pinion Nut, 35 Spline Large Pinion Oversize

from

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

Product Features:
  • Pinion nut
  • Fits Ford 9″ with 35 spline pinion
See More

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"

from

$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
See More

Yukon Gear – Dura Grip For Ford 7.5" (Part No.26034)

Dura Grip For Ford 7.5"

from

$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
See More

National – Shaft Repair Sleeve (Part No.99181)

Shaft Repair Sleeve

from

$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
See More

Driveworks – Tapered Cone/Cup Wheel Bearing Set (Part No.S-A-35)

Tapered Cone/Cup Wheel Bearing Set

from

$13.99
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

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"

from

$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
See More

National – Bearings (Part No.M88010)

Bearings

from

$10.49
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
See More

Motive Gear – Differential Pinion Shaft (Part No.B7AZ4211A)

Differential Pinion Shaft

from

$13.59


Product Features:
  • FORD 9″ CROSS PIN
See More

Yukon Gear – Pinion Install Kit For Ford Daytona 9" Differential (Part No.13045)

Pinion Install Kit For Ford Daytona 9" Differential

from

$284.99
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.
See More

Motive Gear – Differential Pinion Seal (Part No.3604)

Differential Pinion Seal

from

$5.79
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 o
See More

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

from

$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
See More

Yukon Gear – 1.250" Pinion Adaptor Sleeve (Stock Pinion Into Large Support) (Part No.32239)

1.250" Pinion Adaptor Sleeve (Stock Pinion Into Large Support)

from

$74.99
1.250″ pinion adaptor sleeve (stock pinion into large support).

Product Features:
  • Adapter sleeve
  • Fits Ford 9″
  • Adapts 28 spline pinion into 35 spline pinion support
See More

Yukon Gear – Silver Aluminum Pinion Supprt For 9" Ford Daytona (Part No.32037)

Silver Aluminum Pinion Supprt For 9" Ford Daytona

from

$269.99
Plain Silver aluminum pinion Supprt for 9″ Ford Daytona, HD 6061.

Product Features:
  • Fits Ford 9″ with 28 spline pinion
  • Larger inner pinion bearing reduces gear deflection under high load
  • Races installed
  • 6061 aluminum
See More

Yukon Gear – Steel Cover For Ford 8.8" (Part No.32328)

Steel Cover For Ford 8.8"

from

$99.99
Yukon outer stub axle for Chrysler 9.25″ front. This axle uses a 1485 u/joint and has 33 splines.

Product Features:
  • Fits Ford 8.8″
  • Steel
See More

Felpro – Differential Carrier Gasket (Part No.RDS 55074)

Differential Carrier Gasket

from

$8.49
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
See More

Yukon Gear – Pinion Support Bolt For 8" And 9" Ford (Part No.33242)

Pinion Support Bolt For 8" And 9" Ford

from

$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
See More

Yukon Gear – Grizzly Locker For Ford 8" With 28 Spline Axles (Part No.28006)

Grizzly Locker For Ford 8" With 28 Spline Axles

from

$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
See More

Yukon Gear – 8" Dropout Housing Gasket (Part No.23010)

8" Dropout Housing Gasket

from

$11.99
8″ dropout housing gasket.

Product Features:
  • Dropout gasket
  • Fits Ford 8″
See More

Yukon Gear – Crush Sleeve Eliminator Kit For Ford 9" For 35 Spline Pinion (Part No.55042)

Crush Sleeve Eliminator Kit For Ford 9" For 35 Spline Pinion

from

$175.99
9″ large solid pinion preload spacer & shim kit for 35 spline pinion.

Product Features:
  • Crush sleeve eliminator kit for Ford 9″ with 35 spline pinion
See More

Yukon Gear – Tracloc Clutch Set (Two Sides) For 7.5" Ford (Part No.16013)

Tracloc Clutch Set (Two Sides) For 7.5" Ford

from

$264.99
TracLoc clutch set (two sides) for 7.5″ Ford.

Product Features:
  • Clutch kit
  • Fit Ford 7.5″ Trac Loc positraction
See More

Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R9R325MK)

Differential Master Bearing Kit - Koyo

from

$120.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

Product Features:
  • MASTER KIT FORD 9″ W/ DAYTONA
See More

Yukon Gear – Star Washers, 3.250" Ford 9" Drop Out New Design Only (Part No.32144)

Star Washers, 3.250" Ford 9" Drop Out New Design Only

from

$4.99
STAR washers, 3.250″ Yukon Ford 9″ Drop Out new design ONLY.

Product Features:
  • Star washer
  • Fits Ford 9″
  • 3.250″ designs only
See More

Motive Gear – Differential Gear Install Kit (Part No.F7.5IK)

Differential Gear Install Kit

from

$35.49


Product Features:
  • MINI INSTALL KIT FORD 7.5
See More

Motive Gear – Differential Mini Spool (Part No.MS9-31)

Differential Mini Spool

from

$31.99


Product Features:
  • MINI SPOOL 8″ & 9″ 31 SPLN STL 090431
See More

Yukon Gear – High Performance Ring & Pinion Gear Set For Ford 7.5" In A 3.27 Ratio (Part No.24337)

High Performance Ring & Pinion Gear Set For Ford 7.5" In A 3.27 Ratio

from

$679.99
Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty.

Product Features:
  • Fits Ford 7.5″
  • 7.50″ ring gear diameter
  • 28 spline pinion
  • 10 ring gear bolts
  • 3.27 ratio
See More

Motive Gear – Differential Ring and Pinion (Part No.F9-370A)

Differential Ring and Pinion

from

$175.99


Product Features:
  • FRD 10BLT 9.0 R/P 3.70A MG
See More

Yukon Gear – Trac Loc Clutch Guide For 9" Ford (Part No.33250)

Trac Loc Clutch Guide For 9" Ford

from

$4.99
Trac Loc clutch guide for 9″ Ford.

Product Features:
  • Clutch guide
  • Fits Ford 8″ and 9″
See More

Popular 1979 Mercury Cougar Differentials Categories

1979 Mercury Cougar Differentials

Maybe you’re in the middle of a full rebuild of that 1979 Mercury Cougar. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 408 different Differentials in our inventory ranging from $1.99 to $1,211.99. That means you can find the exact parts or products you need to keep that 1979 Mercury Cougar running smoothly.

Differentials are only as good as their brand. We stock 12 different brands to make sure you have plenty of trusted parts to choose from for your 1979 Mercury Cougar. National, Yukon Gear, and Dorman 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 1979 Mercury Cougar, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 136 reviews in this category, some of the top rated parts include Multi Purpose Seal with 5.0 stars and Shaft Repair Sleeve with 5.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1979 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 1979 Mercury Cougar Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1979 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 Carrier Gaskets categories, plus more. For a 1979 Mercury Cougar, our most popular Felpro Differentials include:
Differential Carrier Gasket
from $8.49
(9)
Differential Carrier Gasket
Automatic Transmission Differential Carrier Gaskets

Top 1979 Mercury Cougar Differentials from National

National products are another trusted brand when it comes to Differentials for your 1979 Mercury Cougar. Popular National parts include:
Bearings
from $15.99
(9)
Bearings
Front Differential Pinion Bearings
Bearings
from $6.99
(6)
Bearings
Differential Bearings
Bearings
from $10.49
(4)
Bearings
Rear Differential Pinion Bearings

FAQs for 1979 Mercury Cougar Differentials

What are the most purchased Differentials for the 1979 Mercury Cougar?

Out of 408 Differentials for the 1979 Mercury Cougar, the most popular in our inventory are:
3 Qt - Penzoil 80W90 Conventional Gear Oil
from $44.99
This product is not rated
3 Qt – Penzoil 80W90 Conventional Gear Oil
Differential Oil
Cover Bolt For Ford 7.5", 8.8" & 9.75"
from $6.99
This product is not rated
Cover Bolt For Ford 7.5", 8.8" & 9.75"
Differential Cover Bolts
Pinion Crush Sleeves
from $5.99
This product is not rated
Pinion Crush Sleeves
Differential Crush Sleeves

What are the top-rated 1979 Mercury Cougar Differentials?

Top-rated Differentials for your 1979 Mercury Cougar based on customer reviews/ratings are:
Multi Purpose Seal
from $15.79
(3)
Multi Purpose Seal
“good quality”
Shaft Repair Sleeve
from $37.99
(1)
Shaft Repair Sleeve
“Very delicate piece, but came shipped quite safely and not damaged. High quality.”
Lock Right Locker
from $444.99
(1)
Lock Right Locker
“Fast service and the right part.”