1979 Mercury Cougar Differential Spools
Your 1979 Mercury Cougar might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Differential Spools you desperately need.
We currently carry 18 Differential Spools to choose from for your 1979 Mercury Cougar, and our inventory prices range from as little as $51.99 up to $649.99.
On top of low prices, Advance Auto Parts offers 3 different trusted brands of Differential Spools for the 1979 Mercury Cougar. We only sell parts from trusted brands like USA Standard Gear so that you can find quality parts you can count on.
Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Differential Spools stock in-person!
Differential Spools for Your 1979 Mercury Cougar
Yukon Gear – Mini Spool For Ford 8.8" With 28 Spline Axles (Part No.32225)
from
$218.99
Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.
Product Features:
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Product Features:
- Fits Ford 8.8″ with 28 spline axles
- Provides 100% traction to both wheels at all times
- Installs into standard open carrier case
Motive Gear – Differential Spool (Part No.FS9-31LW)
USA Standard Gear – Mini Spool For Ford 9" With 28 Spline Axles (Part No.59022)
from
$59.99
Product Features:
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- Fits Ford 9″ with 28 spline axles
- Installs into a standard open carrier case
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
USA Standard Gear – Mini Spool For Ford 9" With 31 Spline Axles (Part No.59023)
from
$57.99
Product Features:
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- Fits Ford 9″ with 31 spline axles
- Installs into a standard open carrier case
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
USA Standard Gear – Spartan Locker For Ford 8.8", 31 Spline, Includes Heavy-Duty Cross Pin Shaft (Part No.17005)
from
$649.99
The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers and drivers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect.
Product Features:
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Product Features:
- Fits Ford 8.8″ with 31 spline axles and 7/8″ cross pin shaft
- Made from 9310 steel for added strength
- Replaces the spiders in a standard carrier case
USA Standard Gear – Spartan Locker For Ford 9", 28 Or 31 Spline (Part No.17042)
from
$579.99
The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect. This unit uses the factory side gears.
Product Features:
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Product Features:
- Fits Ford 8″ and 9″ with 28 or 31 spline axles
- Made from 9310 steel for added strength
- Works with stock side gears in standard carrier case
Yukon Gear – Steel Spool For Ford 9" With 35 Spline Axles, Small Bearing (Part No.32098)
from
$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:
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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
Yukon Gear – Steel Spool For Ford 9" With 40 Spline Axles (Part No.32182)
from
$389.99
Yukon Performance 2-3/16″ deck steel spool for 9″ Ford with 40 spline axles. Spool uses 2″ journal bearings (45 degree). 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:
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Product Features:
- Fits Ford 9″ with 40 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Steel Spool For Ford 9" With 35 Spline Axles (Part No.32047)
from
$379.99
Yukon Performance 2-3/16″ deck steel spool for 9″ Ford with 35 spline axles. Spool uses 2″ journal bearings (30 degree). Does not fit Mark Williams. 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:
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Product Features:
- Fits Ford 9″ with 35 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Lightweight Steel Spool For Ford 9" With 31 Spline Axles (Part No.32046)
from
$313.99
Yukon Performance 2-1/8″ deck lightweight steel spool for 9″ Ford with 31 spline axles. Spool uses 1.785″ journal bearings. 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:
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Product Features:
- Fits Ford 9″ with 31 spline axles
- Lightweight design
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
USA Standard Gear – Spool For Ford 9", 35 Spline (Part No.59025)
from
$294.99
9″ FORD 35Spline SPOOL 30deg (EXCL M.WLMS) 2-3/16″ DECK , 2″ Journal .
Product Features:
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Product Features:
- Fits Ford 9″ with 35 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Steel Spool For Ford 9" With 31 Spline Axles (Part No.32045)
from
$289.99
Yukon Performance 2-1/8″ deck steel spool for 9″ Ford with 31 spline axles. Spool uses 1.785″ journal bearings. 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:
See More
Product Features:
- Fits Ford 9″ with 31 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Mini Spool For Ford 8.8" With 31 Spline Axles (Part No.32226)
from
$194.99
Mini Spool for Ford 8.8″ with 31 spline axles and 7/8″ cross pin. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.
Product Features:
See More
Product Features:
- Fits Ford 8.8″ with 31 spline axles
- Provides 100% traction to both wheels at all times
- Installs into standard open carrier case
USA Standard Gear – Spool For Ford 9", 31 Spline (Part No.59004)
from
$175.99
Product Features:
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- Fits Ford 9″ with 31 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Motive Gear – Differential Spool (Part No.FS9-28LW)
Motive Gear – Differential Spool (Part No.FS9-35LW)
Yukon Gear – Mini Spool For Ford 9" With 28 Spline Axles (Part No.32056)
from
$59.99
Mini Spool 8″ and 9″ for Ford with 28 spline axles. Cross is bored for three cross pins. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.
Product Features:
See More
Product Features:
- Fits Ford 9″ with 28 spline axles
- Installs into a standard open carrier case
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Mini Spool For Ford 9" With 31 Spline Axles (Part No.32057)
from
$51.99
Mini Spool for Ford 9.0 with 31 spline axles. Cross is bored for three cross pins. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.
Product Features:
See More
Product Features:
- Fits Ford 9″ with 31 spline axles
- Installs into a standard open carrier case
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
FAQs for 1979 Mercury Cougar Differential Spools
What are the most popular Differential Spools for the 1979 Mercury Cougar?
With 3 brands you can trust, our most popular Differential Spools for the 1979 Mercury Cougar parts are:
from
$218.99
This product is not rated
Mini Spool For Ford 8.8" With 28 Spline Axles
Differential Spools
from
$57.99
This product is not rated
Mini Spool For Ford 9" With 31 Spline Axles
Differential Spools
from
$59.99
This product is not rated
Mini Spool For Ford 9" With 28 Spline Axles
Differential Spools
