How to service and repair the 8.8 Inch Ring Gear axle shaft on Ford Mustang?

Starting the service and repair of the Ford 8.8 Inch Ring Gear axle shaft requires the vehicle to be elevated and supported alongside removal of the wheel and tire assembly and rear brake disc. First drain the lubricant by removing the differential housing cover and afterward slip out the differential pinion shaft lock bolt before pulling out the differential pinion shaft. Avoid damaging the radiator O-ring in the axle shaft groove but push the axle shafts toward the inside to remove U-washers correctly. You should remove the rear brake anti-lock sensor with caution to prevent any damage before extracting the axle shaft. Install the wheel bearing oil seal on axle shafts with Premium Long-Life Grease XG-1-C or an equivalent product that satisfies Ford specification ESA-M1C75-B but avoid damaging the seal lip. Position two U-washers to the button ends of the axle shafts before using outward force on the axle shafts. Handle installation of the differential pinion shaft by applying Threadslock and Sealer EOAZ-19554-AA or equivalent WSK-M2G351-A5 material according to Ford specification before inserting the pinion through the shaft hole and using a new lock bolt. The last step includes reinstalling the differential housing cover followed by filling the rear axle with designated lubrication before continuing with installation of the rear brake anti-lock sensor and rear brakes and wheel assembly before lowering the vehicle.

OEM Ford Mustang Axle Shaft

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26 Axle Shafts found

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Ford Mustang Axle Assembly, Rear Driver Side
Part Number: FR3Z-4K139-D
$335.85 MSRP: $493.17
You Save: $157.32 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; CV Axle Assembly, Rear Left; Axle Shaft
- Position: Rear Driver Side
- Replaces: FR3Z-4K139-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2023 Ford Mustang | EcoBoost, EcoBoost Premium, V6 | 4 Cyl 2.3 L GAS, 6 Cyl 3.7 L GAS
View related parts
Ford Mustang Axle Assembly, Rear Driver Side
Part Number: KR3Z-4K139-E
$120.23 MSRP: $175.00
You Save: $54.77 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assembly - Rear Axle
- Position: Rear Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2024 Ford Mustang | EcoBoost, EcoBoost Premium | 4 Cyl 2.3 L GAS
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Ford Mustang Axle Assembly, Rear Driver Side
Part Number: KR3Z-4K139-F
$132.82 MSRP: $193.33
You Save: $60.51 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assembly - Rear Axle
- Position: Rear Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2024 Ford Mustang | Dark Horse, Dark Horse Premium, GT, GT Premium | 8 Cyl 5.0 L GAS
View related parts
Ford Mustang Axle Assembly, Rear Passenger Side
Part Number: FR3Z-4K138-E
$299.64 MSRP: $440.00
You Save: $140.36 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assembly; CV Axle Assembly, Rear Right; GSP CV Axle; Axle Shaft; CV Axle Assembly
- Position: Rear Passenger Side
- Replaced by: FR3Z-4K138-H
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2023 Ford Mustang | Bullitt, GT, GT 50 Years Limited Edition, GT Premium, Mach 1 | 8 Cyl 5.0 L GAS
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Ford Mustang Axle Assembly, Rear Driver Side
Part Number: FR3Z-4K139-F
$200.38 MSRP: $291.67
You Save: $91.29 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; CV Axle Assembly, Rear Left; CV Axle Assembly; GSP CV Axle; Axle Shaft
- Position: Rear Driver Side
- Replaced by: FR3Z-4K139-J
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2023 Ford Mustang | Bullitt, GT, GT 50 Years Limited Edition, GT Premium, Mach 1 | 8 Cyl 5.0 L GAS
View related parts
Ford Mustang Axle Assembly, Rear Driver Side
Part Number: KR3Z-4K139-A
$479.42 MSRP: $704.00
You Save: $224.58 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; CV Axle Assembly, Rear Left; Axle Shaft
- Position: Rear Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2022 Ford Mustang | Shelby GT500 | 8 Cyl 5.2 L GAS
View related parts
Ford Mustang Axle Assembly, Rear Passenger Side
Part Number: FR3Z-4K138-F
$267.43 MSRP: $392.70
You Save: $125.27 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assembly; CV Axle Assembly, Rear Right; Axle Shaft
- Position: Rear Passenger Side
- Replaces: FR3Z-4K138-C
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2020 Ford Mustang | Shelby GT350, Shelby GT350R | 8 Cyl 5.2 L GAS
View related parts
Ford Mustang Axle Assembly, Rear Driver Side
Part Number: JR3Z-4K139-B
$380.79 MSRP: $559.17
You Save: $178.38 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; CV Axle Assembly, Rear Left; GSP CV Axle; Axle Shaft; CV Axle Assembly
- Position: Rear Driver Side
- Replaced by: JR3Z-4K139-D
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2023 Ford Mustang | Bullitt, GT, GT Premium, Mach 1 | 8 Cyl 5.0 L GAS
View related parts
Ford Mustang Axle Assembly, Passenger Side
Part Number: FR3Z-4K138-G
$303.39 MSRP: $445.50
You Save: $142.11 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assembly
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2024 Ford Mustang | EcoBoost, EcoBoost Premium | 4 Cyl 2.3 L GAS
View related parts
Ford Mustang Axle Shafts, Rear Passenger Side
Part Number: 5R3Z-4234-AC
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Drive Axle Shaft, Rear Right; Axle Shaft Assembly; Axle Shaft
- Position: Rear Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2010 Ford Mustang | Base, GT, Shelby GT500 | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L GAS
View related parts
Ford Mustang Axle Shafts, Rear Driver Side
Part Number: 5R3Z-4234-AD
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Drive Axle Shaft, Rear Left; Axle Shaft Assembly; Axle Shaft
- Position: Rear Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2010 Ford Mustang | Base, GT, Shelby GT500 | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L GAS
View related parts
Ford Mustang Axle Shafts, Rear Passenger Side
Part Number: 5R3Z-4234-C
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Drive Axle Shaft, Rear Right; Axle Shaft Assembly; Axle Shaft
- Position: Rear Passenger Side
- Replaces: 5R3Z-4234-DA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2009 Ford Mustang | Base, Bullitt, GT, Shelby GT, Shelby GT500, Shelby GT500KR | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L GAS
View related parts
Ford Mustang Axle Shafts, Rear Passenger Side
Part Number: 5R3Z-4234-A
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Drive Axle Shaft, Rear Right; Axle Shaft Assembly; Axle Shaft
- Position: Rear Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2014 Ford Mustang | Base, Boss 302, Bullitt, GT, Shelby GT, Shelby GT500, Shelby GT500KR | 6 Cyl 3.7 L GAS, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.4 L GAS, 8 Cyl 5.8 L GAS
View related parts
Ford Mustang Axle Shafts, Rear Driver Side
Part Number: 5R3Z-4234-B
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Drive Axle Shaft, Rear Left; Axle Shaft Assembly; Axle Shaft
- Position: Rear Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2014 Ford Mustang | Base, Boss 302, Bullitt, GT, Shelby GT, Shelby GT500, Shelby GT500KR | 6 Cyl 3.7 L GAS, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.4 L GAS, 8 Cyl 5.8 L GAS
View related parts
Ford Mustang Axle Assembly, Rear Passenger Side
Part Number: 2R3Z-4K138-A
Product Specifications
- Other Name: Shaft Assembly; CV Axle Assembly, Rear Left, Rear Right; CV Axle Assembly; GSP CV Axle; Axle Shaft
- Position: Rear Passenger Side
- Replaces: 1R3Z-4K138-AA, 2R3Z-4K138-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2000-2004 Ford Mustang | Base, GT, GT Bullitt, Mach 1, SVT Cobra, SVT Cobra 10th Anniversary | 6 Cyl 3.8 L GAS, 6 Cyl 3.9 L GAS, 8 Cyl 4.6 L GAS
View related parts
Ford Mustang Axle Shafts, Rear Driver Side
Part Number: 5R3Z-4234-D
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Drive Axle Shaft, Rear Left; Axle Shaft Assembly; Axle Shaft
- Position: Rear Driver Side
- Replaces: 5R3Z-4234-DB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2009 Ford Mustang | Base, Bullitt, GT, Shelby GT, Shelby GT500, Shelby GT500KR | 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L GAS
View related parts
Ford Mustang Axle Shaft, Rear
Part Number: F4ZZ-4234-A
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Axle Shafts
- Manufacturer Note: 5 lug, disc, non ABS
- Position: Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994-1998 Ford Mustang | Base, GT, GTS, SVT Cobra | 6 Cyl 3.8 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS
View related parts
Ford Mustang Axle Shaft, Rear
Part Number: F4ZZ-4234-B
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Axle Shafts
- Manufacturer Note: 5 lug, disc, ABS
- Position: Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994-1998 Ford Mustang | Base, GT, GTS, SVT Cobra | 6 Cyl 3.8 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS
View related parts
Ford Mustang Axle Shafts, Rear
Part Number: XR3Z-4234-AA
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Drive Axle Shaft, Rear; Axle Shaft Assembly; Axle Shaft
- Manufacturer Note: with ABS
- Position: Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2004 Ford Mustang | Base, GT, GT Bullitt, Mach 1, SVT Cobra, SVT Cobra 10th Anniversary | 6 Cyl 3.8 L GAS, 6 Cyl 3.9 L GAS, 8 Cyl 4.6 L GAS
View related parts
Ford Mustang Axle Shafts, Rear
Part Number: XR3Z-4234-BA
Product Specifications
- Other Name: Shaft Assembly - Rear Axle; Drive Axle Shaft, Rear; Axle Shaft Assembly; Axle Shaft
- Manufacturer Note: without ABS
- Position: Rear
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2004 Ford Mustang | Base, GT, GT Bullitt, Mach 1, SVT Cobra, SVT Cobra 10th Anniversary | 6 Cyl 3.8 L GAS, 6 Cyl 3.9 L GAS, 8 Cyl 4.6 L GAS

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Ford Mustang Axle Shaft

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Ford Mustang Axle Shaft Parts Questions & Experts Answers

Axle Shafts, Rear
XR3Z-4234-AA
Q: How to service and repair the 8.8 Inch Ring Gear axle shaft on Ford Mustang?
A: Starting the service and repair of the Ford 8.8 Inch Ring Gear axle shaft requires the vehicle to be elevated and supported alongside removal of the wheel and tire assembly and rear Brake Disc. First drain the lubricant by removing the differential housing cover and afterward slip out the differential pinion shaft lock bolt before pulling out the differential pinion shaft. Avoid damaging the radiator O-ring in the axle shaft groove but push the axle shafts toward the inside to remove U-washers correctly. You should remove the rear brake anti-lock sensor with caution to prevent any damage before extracting the axle shaft. Install the wheel bearing oil seal on axle shafts with Premium Long-Life Grease XG-1-C or an equivalent product that satisfies Ford specification ESA-M1C75-B but avoid damaging the seal lip. Position two U-washers to the button ends of the axle shafts before using outward force on the axle shafts. Handle installation of the differential pinion shaft by applying Threadslock and Sealer EOAZ-19554-AA or equivalent WSK-M2G351-A5 material according to Ford specification before inserting the pinion through the shaft hole and using a new lock bolt. The last step includes reinstalling the differential housing cover followed by filling the rear axle with designated lubrication before continuing with installation of the rear brake anti-lock sensor and rear brakes and wheel assembly before lowering the vehicle.