How to remove and install a Differential on Mercury Cougar?

First, take out the right half shaft. After that, push the drive shaft forward and lay it against the driveshaft hoop. Jack up and support differential housing then detach bolts holding the rear mount in place. Take off the rear mount from carrier cover. At this time, you may remove front mounting bolts, nuts, bushings, and washers. Put on a pry bar and lower housing to the right while still allowing it to move aside slightly so that you can disconnect the left half shaft with a prybar. Replace differential side seals. Plug it into the left side of the housing and lower completely into position. Substitute side oil seals during the installation process. On the left half shaft, fit a new circlip properly. Lubricate the spline of left half shaft properly. Position the carrier on jack and finally lift slightly to align the left half shaft into differential side gear. Attach carrier to front mounting bolts and engage left half shaft until circlip is seated in differential side gear. Install bushings, washers, and nuts in front mount as well as tighten them adequately for security purposes. Attach the rear mount to housing cover.

Genuine Mercury Cougar Differential

Front Differential

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7 Differentials found

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Mercury Cougar Differential Case
Part Number: E7TZ-4204-A
$136.20 MSRP: $229.00
You Save: $92.80 (41%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Case - Differential
- Replaced by: 5R3Z-4205-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1997 Mercury Cougar | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 4.6L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 3AT C5, 4AT, 4AT 4R70W, 4AT AOD, 4AT AODE, 4MT, 5MT
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Mercury Cougar Differential Case
Part Number: E7TZ-4204-B
$49.84 MSRP: $69.23
You Save: $19.39 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Case - Differential
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1985-1997 Mercury Cougar | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 4.6L, 8 Cyl 5.0L | 3AT C5, 4AT, 4AT 4R70W, 4AT AOD, 4AT AODE, 5MT
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Mercury Cougar Differential Case
Part Number: F5AZ-4204-A
$48.84 MSRP: $64.77
You Save: $15.93 (25%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Case - Differential
- Replaced by: XW4Z-4204-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1997 Mercury Cougar | 6 Cyl 3.8L, 8 Cyl 4.6L, 8 Cyl 5.0L | 4AT, 4AT 4R70W, 4AT AOD, 4AT AODE, 5MT
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Mercury Cougar Differential Assembly
Part Number: 1L8Z-7F465-BA
Product Specifications
- Other Name: Differential Assy
- Manufacturer Note: 1S8P-A*
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2002 Mercury Cougar | 4 Cyl 2.0L, 6 Cyl 2.5L | 4AT CD4E
View related parts
Mercury Cougar Differential Case
Part Number: F5AZ-4204-B
Product Specifications
- Other Name: Case - Differential
- Replaced by: 1616
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1990-1997 Mercury Cougar | 6 Cyl 3.8L, 8 Cyl 4.6L, 8 Cyl 5.0L | 4AT, 4AT 4R70W, 4AT AOD, 4AT AODE, 5MT
View related parts
Mercury Cougar Differential Assembly
Part Number: F5RZ-4026-FD
Product Specifications
- Other Name: Differential Assy
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2002 Mercury Cougar | 4 Cyl 2.0L, 6 Cyl 2.5L | 4AT CD4E, 5MT
View related parts
Mercury Cougar Differential Assembly
Part Number: E9SZ-4026-B
Product Specifications
- Other Name: Differential Assy
- Replaced by: 2L5Z-4026-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1986-1995 Mercury Cougar | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 4.6L, 8 Cyl 5.0L | 3AT C5, 4AT, 4AT AOD, 4AT AODE, 5MT

Mercury Cougar Differential Parts Questions & Experts Answers

Differential Case
F5AZ-4204-A
Q: How to remove and install a Differential on Mercury Cougar?
A: First, take out the right half shaft. After that, push the drive shaft forward and lay it against the driveshaft hoop. Jack up and support differential housing then detach bolts holding the rear mount in place. Take off the rear mount from carrier cover. At this time, you may remove front mounting bolts, nuts, bushings, and washers. Put on a pry bar and lower housing to the right while still allowing it to move aside slightly so that you can disconnect the left half shaft with a prybar. Replace differential side seals. Plug it into the left side of the housing and lower completely into position. Substitute side oil seals during the installation process. On the left half shaft, fit a new circlip properly. Lubricate the spline of left half shaft properly. Position the carrier on jack and finally lift slightly to align the left half shaft into differential side gear. Attach carrier to front mounting bolts and engage left half shaft until circlip is seated in differential side gear. Install bushings, washers, and nuts in front mount as well as tighten them adequately for security purposes. Attach the rear mount to housing cover.