1978 Mercury Cougar Differential Carrier Shim Kits

Your 1978 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 Carrier Shim Kits you desperately need.

We currently carry 8 Differential Carrier Shim Kits to choose from for your 1978 Mercury Cougar, and our inventory prices range from as little as $23.99 up to $487.99.

On top of low prices, Advance Auto Parts offers 2 different trusted brands of Differential Carrier Shim Kits for the 1978 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 Carrier Shim Kits stock in-person!

Differential Carrier Shim Kits for Your 1978 Mercury Cougar

Yukon Gear – Trac Loc Internals For 8" & 9" Ford, 31 Spline, Includes Hub & Clutches (Part No.16027)

Trac Loc Internals For 8" & 9" Ford, 31 Spline, Includes Hub & Clutches

from

$487.99
Yukon Trac Loc internals for 8″ & 9″ Ford, 31 spline, includes hub & clutches. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects.

Product Features:
  • Spider gear kit
  • Fits Ford 9″ with Trac Loc positraction with 31 spline axles
  • Includes two side gears, four pinion gears, cross pin shaft, clutch hub, roll pin and spider gear thrust washers.
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Yukon Gear – Positraction Internals For 8" And 9" Ford With 31 Spline Axles, In A 4-Pinion Design (Part No.16026)

Positraction Internals For 8" And 9" Ford With 31 Spline Axles, In A 4-Pinion Design

from

$315.99
Yukon positraction internals for 8″ and 9″ Ford with 31 spline axles, in a 4-pinion design. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects.

Product Features:
  • Spider gear kit
  • Fits Ford 9″ with Trac Loc positraction with 31 spline axles
  • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Yukon Gear – Standard Open Spider Gear Kit For 8" And 9" Ford With 28 Spline Axles And 2-Pinion Design (Part No.16031)

Standard Open Spider Gear Kit For 8" And 9" Ford With 28 Spline Axles And 2-Pinion Design

from

$285.99
Yukon standard open spider gear kit for 8″ and 9″ Ford with 28 spline axles and 2-pinion design. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. All components come with a one year warranty against manufacturing defects.

Product Features:
  • Spider gear kit
  • Fit Ford 8″ and 9″ open differential with 28 spline axles
  • Includes two side gears, two pinion gears, cross pin shaft, roll pins and spider gear thrust washers.
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USA Standard Gear – Standard Spider Gear Set For Ford 9", 31 Spline, 4-Pinion Design (Part No.39018)

Standard Spider Gear Set For Ford 9", 31 Spline, 4-Pinion Design

from

$249.99
Product Features:
  • Spider gear kit
  • Fits Ford 9″ 31 spline open differential
  • Includes two side gears, four pinion gears, cross pin shaft, roll pins and spider gear thrust washers.
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USA Standard Gear – Standard Spider Gear Set For Ford 8" & 9", 28 Spline, 2-Pinion Design (Part No.39017)

Standard Spider Gear Set For Ford 8" & 9", 28 Spline, 2-Pinion Design

from

$198.99
Product Features:
  • Spider gear kit
  • Fits Ford 8″ and 9″ 28 spline open differential
  • Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Yukon Gear – Flat Side Gear Without Hub For 8" And 9" Ford With 28 Splines (Part No.16164)

Flat Side Gear Without Hub For 8" And 9" Ford With 28 Splines

from

$51.99
Flat side gear without hub for 8″ and 9″ Ford with 28 splines.

Product Features:
  • Side gear without hub
  • Fits Ford 8″ and 9″ Trac Loc positraction with 28 spline axles
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Yukon Gear – Side Gear With Hub For 8" And 9" Ford With 28 Splines (Part No.16163)

Side Gear With Hub For 8" And 9" Ford With 28 Splines

from

$46.99
Side gear with hub for 8″ and 9″ Ford with 28 splines.

Product Features:
  • Side gear with hub
  • Fits Ford 8″ and 9″ standard open differential and Trac Loc positraction with 28 spline axles
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Yukon Gear – Pinion Gear For 8" And 9" Ford (Part No.16160)

Pinion Gear For 8" And 9" Ford

from

$23.99
Pinion gear for 8″ and 9″ Ford.

Product Features:
  • Pinion gear
  • Fits Ford 8″ and 9″
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FAQs for 1978 Mercury Cougar Differential Carrier Shim Kits

What are the most popular Differential Carrier Shim Kits for the 1978 Mercury Cougar?

With 2 brands you can trust, our most popular Differential Carrier Shim Kits for the 1978 Mercury Cougar parts are:
Standard Open Spider Gear Kit For 8" And 9" Ford With 28 Spline Axles And 2-Pinion Design
from $285.99
This product is not rated
Standard Open Spider Gear Kit For 8" And 9" Ford With 28 Spline Axles And 2-Pinion Design
Differential Carrier Shim Kits
Pinion Gear For 8" And 9" Ford
from $23.99
This product is not rated
Pinion Gear For 8" And 9" Ford
Differential Carrier Shim Kits
Trac Loc Internals For 8" & 9" Ford, 31 Spline, Includes Hub & Clutches
from $487.99
This product is not rated
Trac Loc Internals For 8" & 9" Ford, 31 Spline, Includes Hub & Clutches
Differential Carrier Shim Kits