How to remove and reinstall the axle shaft on Ford Mustang?

Loosen the wheel lug nuts, raise the rear of the vehicle, support it securely on jackstands, and remove the wheel. Remove the brake caliper and disc. Remove the cover from the differential carrier and allow the lubricant to drain into a container. For models equipped with a differential oil cooler, disconnect the differential oil cooler temperature sensor, then remove the oil cooler line fasteners. Use a small screwdriver to pry up the two cooler line retainer clips from the fittings and disconnect the differential oil cooler lines from the rear cover. Remove the lock bolt from the differential pinion shaft and slide the notched end of the pinion shaft out of the differential case as far as it will go, positioning a large screwdriver between the rear axle case and a ring gear bolt to keep the differential case from turning while loosening the pinion shaft lock bolt. Push in the outer (flanged) end of the axleshaft and remove the C-lock from the inner end of the shaft, using a magnet if necessary. Withdraw the axleshaft carefully to avoid damaging the oil seal in the axle housing as the splined end passes through it. Installation is the reverse of removal, ensuring to tighten the differential pinion shaft lock bolt to the specified torque, followed by installing the differential cover and refilling the axle with the correct quantity and grade of lubricant.

Genuine Ford Mustang Axle Shaft

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38 Axle Shafts found

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Ford Mustang Shaft Assembly
Part Number: FR3Z-4K138-D
$249.73 MSRP: $368.33
You Save: $118.60 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assy; Axle Assembly
- Position: Passenger Side
- Replaces: FR3Z-4K138-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2023 Ford Mustang | 4 Cyl 2.3 L GAS, 4 Cyl 2.3L TIVCT DI TC, 6 Cyl 3.7L PFI NA | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Shaft Assembly - Rear Axle
Part Number: FR3Z-4K139-B
$153.90 MSRP: $225.00
You Save: $71.10 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assy - Rear Axle
- Position: Driver Side
- Replaced by: FR3Z-4K139-J
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2017 Ford Mustang | 8 Cyl 5.0L MOD DOHC SEFI NA | 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Shaft Assembly
Part Number: FR3Z-4K138-A
$249.73 MSRP: $368.33
You Save: $118.60 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assy
- Position: Passenger Side
- Replaced by: FR3Z-4K138-D
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2017 Ford Mustang | 4 Cyl 2.3L TIVCT DI TC, 6 Cyl 3.7L PFI NA | 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Shaft Assembly - Rear Axle
Part Number: FR3Z-4K139-D
$276.85 MSRP: $408.33
You Save: $131.48 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assy - Rear Axle; Axle Assembly
- Position: 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 | 4 Cyl 2.3 L GAS, 4 Cyl 2.3L TIVCT DI TC, 6 Cyl 3.7L PFI NA | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang SHAFT ASY - REAR AXLE
Part Number: FR3Z-4K139-G
$213.57 MSRP: $315.00
You Save: $101.43 (33%)
ADD TO CART
Product Specifications
- Other Name: Axle Assembly
- Position: Driver Side
- Replaced by: FR3Z-4K139-H
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2019 Ford Mustang | 8 Cyl 5.2L | 10-Speed Automatic Transmission (10R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Shaft Assembly - Rear Axle
Part Number: FR3Z-4K139-A
$276.85 MSRP: $408.33
You Save: $131.48 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assy - Rear Axle
- Position: Driver Side
- Replaced by: FR3Z-4K139-D
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2017 Ford Mustang | 4 Cyl 2.3L TIVCT DI TC, 6 Cyl 3.7L PFI NA | 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Shaft Assembly
Part Number: FR3Z-4K138-E
$146.29 MSRP: $388.33
You Save: $242.04 (63%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assy; Axle Assembly
- Position: Passenger Side
- Replaced by: FR3Z-4K138-J
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2023 Ford Mustang | 8 Cyl 5.0 L GAS, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA | 10-Speed Automatic Transmission (10R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang SHAFT ASY - REAR AXLE
Part Number: KR3Z-4K139-G
$156.18 MSRP: $228.33
You Save: $72.15 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Axle Assembly
- Position: Driver Side
- Replaces: KR3Z-4K139-D
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2021-2024 Ford Mustang | 8 Cyl 5.0 L GAS
View related parts
Ford Mustang SHAFT ASY - REAR AXLE
Part Number: FR3Z-4K139-H
$213.57 MSRP: $315.00
You Save: $101.43 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Axle Assembly
- Position: Rear
- Replaces: FR3Z-4K139-C, FR3Z-4K139-G
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2020 Ford Mustang | 8 Cyl 5.2 L GAS, 8 Cyl 5.2L | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang SHAFT ASY
Part Number: KR3Z-4K138-D
$107.27 MSRP: $156.83
You Save: $49.56 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Axle Assembly
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2024 Ford Mustang | 8 Cyl 5.0 L GAS
View related parts
Ford Mustang Shaft Assembly - Rear Axle
Part Number: FR3Z-4K139-F
$153.90 MSRP: $225.00
You Save: $71.10 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SHAFT ASY - REAR AXLE; Axle Assembly
- Position: Driver Side
- Replaced by: FR3Z-4K139-J
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2023 Ford Mustang | 8 Cyl 5.0 L GAS
View related parts
Ford Mustang SHAFT ASY
Part Number: FR3Z-4K138-F
$261.03 MSRP: $385.00
You Save: $123.97 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Axle Assembly
- Position: 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 | 8 Cyl 5.2 L GAS, 8 Cyl 5.2L | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Shaft Assembly - Rear Axle
Part Number: JR3Z-4K139-B
$313.01 MSRP: $461.67
You Save: $148.66 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SHAFT ASY - REAR AXLE; Axle Assembly
- Position: 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 | 8 Cyl 5.0 L GAS, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA | 10-Speed Automatic Transmission (10R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Shaft Assembly - Rear Axle
Part Number: FR3Z-4K139-C
$213.57 MSRP: $315.00
You Save: $101.43 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assy - Rear Axle
- Position: Driver Side
- Replaced by: FR3Z-4K139-H
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2019 Ford Mustang | 8 Cyl 5.2L | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang SHAFT ASY - REAR AXLE
Part Number: KR3Z-4K139-A
$381.50 MSRP: $583.33
You Save: $201.83 (35%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Axle Assembly
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2022 Ford Mustang | 8 Cyl 5.2 L GAS
View related parts
Ford Mustang Shaft Assembly - Rear Axle
Part Number: FR3Z-4K139-E
$153.90 MSRP: $225.00
You Save: $71.10 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assy - Rear Axle
- Position: Driver Side
- Replaced by: FR3Z-4K139-J
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2017-2018 Ford Mustang | 8 Cyl 5.0L MOD DOHC SEFI NA | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Shaft Assembly
Part Number: FR3Z-4K138-C
$261.03 MSRP: $385.00
You Save: $123.97 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Shaft Assy
- Position: Passenger Side
- Replaced by: FR3Z-4K138-F
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2019 Ford Mustang | 8 Cyl 5.2L | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang SHAFT ASY
Part Number: KR3Z-4K138-C
$306.23 MSRP: $451.67
You Save: $145.44 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Axle Assembly
- Position: Passenger Side
- Replaces: KR3Z-4K138-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2022 Ford Mustang | 8 Cyl 5.2 L GAS
View related parts
Ford Mustang SHAFT ASY
Part Number: FR3Z-4K138-G
$251.99 MSRP: $371.67
You Save: $119.68 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Axle Assembly
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2024 Ford Mustang | 4 Cyl 2.3 L GAS
View related parts
Ford Mustang SHAFT ASY
Part Number: KR3Z-4K138-B
$108.30 MSRP: $158.33
You Save: $50.03 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Axle Assembly
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2021-2023 Ford Mustang | 8 Cyl 5.0 L GAS

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Ford Mustang Axle Shaft

We provide a wide range of Ford Mustang Axle Shaft at the best prices possible. If you need Ford Mustang Axle Shaft, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your door step with a fast delivery service.

Ford Mustang Axle Shaft Parts Questions & Experts Answers

Shaft Assembly - Rear Axle
5R3Z-4234-AD
Q: How to remove and reinstall the axle shaft on Ford Mustang?
A: Loosen the wheel lug nuts, raise the rear of the vehicle, support it securely on jackstands, and remove the wheel. Remove the brake caliper and disc. Remove the cover from the differential carrier and allow the lubricant to drain into a container. For models equipped with a differential oil cooler, disconnect the differential oil cooler temperature sensor, then remove the oil cooler line fasteners. Use a small screwdriver to pry up the two cooler line retainer clips from the fittings and disconnect the differential oil cooler lines from the rear cover. Remove the lock bolt from the differential pinion shaft and slide the notched end of the pinion shaft out of the differential case as far as it will go, positioning a large screwdriver between the rear axle case and a ring gear bolt to keep the differential case from turning while loosening the pinion shaft lock bolt. Push in the outer (flanged) end of the axleshaft and remove the C-lock from the inner end of the shaft, using a magnet if necessary. Withdraw the axleshaft carefully to avoid damaging the oil seal in the axle housing as the splined end passes through it. Installation is the reverse of removal, ensuring to tighten the differential pinion shaft lock bolt to the specified torque, followed by installing the differential cover and refilling the axle with the correct quantity and grade of lubricant.