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

To replace the Ford 8.8 Inch Ring Gear axle shaft, lift the vehicle, take out the tire, wheel and rear brake disc. Empty drain lubricant, take off the differential cover and pinion shaft lock bolt. Remove axle shaft, grease seals and replace parts and make sure everything is correctly aligned and lubricated before rolling the vehicle back down.

How to service and repair the 7.5 Inch Ring Gear axle shaft on Ford Mustang?

To fix the Ford 7.5 Inch Ring Gear axle shaft, elevate the car, take off the wheel, tire and rear brake disc. Take off the drain lubricant, differential cover and lock bolt of the pinion shaft. Removal of axle shafts and anti-lock sensor is to be done carefully. Apply lubrication to seals, reassemble parts and fill lubrication before reducing 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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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 and Q&A

Axle Assembly, Rear Passenger Side
2R3Z-4K138-A
Q: How to service and repair the 8.8 Inch Ring Gear axle shaft on Ford Mustang?
A: To replace the Ford 8.8 Inch Ring Gear axle shaft, lift the vehicle, take out the tire, wheel and rear Brake Disc. Empty drain lubricant, take off the Differential Cover and pinion shaft lock bolt. Remove axle shaft, grease seals and replace parts and make sure everything is correctly aligned and lubricated before rolling the vehicle back down.
Axle Shafts, Rear
XR3Z-4234-AA
Q: How to service and repair the 7.5 Inch Ring Gear axle shaft on Ford Mustang?
A: To fix the Ford 7.5 Inch Ring Gear axle shaft, elevate the car, take off the wheel, tire and rear Brake Disc. Take off the drain lubricant, Differential Cover and lock bolt of the pinion shaft. Removal of axle shafts and anti-lock sensor is to be done carefully. Apply lubrication to seals, reassemble parts and fill lubrication before reducing the vehicle.