How to replace the rear Crankshaft Seal in a V8 engine on Ford Mustang?

Changing the rear Crankshaft Seal is indeed a very time consuming job which involves several special tools; it is therefore advised that doing these get ready with the required tools before starting with the job. It is advisable to loose the cable that connects to the negative post of the battery first. Then, proceed and lift the car appropriately and make sure it rests on jackstands. First, if it is requirements, eliminate the transmission and then uninstall the flywheel or the driveplate. Apply use of a special tool on crankshaft rear oil slinger so as to be followed by removal of the rear Crankshaft Seal from the retainer with the use of seal puller. Be careful when fitting the new seal not to scratch or in any way harm the crankshaft sealing surface or the bore of the engine block since this may lead to development of new oil leaks. Wipe the crankshaft and seal bore in the retainer clean, using a rag that is damp with a lacquer thinner or acetone. Ensure that the Crankshaft Seal contact surface on the crankshaft is smooth and free from any roughness that might damage the seal lip and therefore develop leaks, also ensure that there are no signs of excessive wear on this surface or it should not have groves. It is recommended to apply a thin layer of engine oil on the lip of a new seal and the outer diameter of the crankshaft; the edges of a new Crankshaft Seal should not be rolled. Place the new seal at the crankshaft such that if written, the word 'THIS SIDE OUT' should be facing the rear part of the engine. A special rear Crankshaft Seal installation tool is to be used to install it by using a hammer to drive the seal until it lies flat against the seal retainer all the way around. For 4.6L engines, the crankshaft rear oil slinger has to be bolted using a special tool. Last but not the least, to complete the process, reverse the above stated removal steps.

Genuine Ford Mustang Crankshaft Seal

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27 Crankshaft Seals found

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Ford Mustang Crankshaft Oil Seal Assembly Front
Part Number: CM5Z-6700-E
$13.46 MSRP: $17.50
You Save: $4.04 (24%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal Assembly - Crankshaft Oil - Front
- Position: Front
- Replaces: 1S7Z-6700-AA, CM5Z-6700-A, 9E5Z-6700-A, CM5Z-6700-C
- 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, 8 Cyl 5.0 L GAS, 8 Cyl 5.2 L GAS | 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)
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Ford Mustang SEAL ASY - CRANKSHAFT OIL
Part Number: 1S7Z-6A321-B
$83.27 MSRP: $108.33
You Save: $25.06 (24%)
ADD TO CART
Product Specifications
- Other Name: Rear Main Seal, Rear Main Seal Retainer, Rear Seal
- Replaces: 1S7Z-6K301-AA, 1S7Z-6D309-AA, 1S7Z-6K301-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2025 Ford Mustang | 4 Cyl 2.3 L GAS, 4 Cyl 2.3L TIVCT DI TC, 8 Cyl 5.0 L GAS, 8 Cyl 5.2 L GAS | 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 Crankshaft Oil Seal Assembly Front
Part Number: GK2Z-6700-A
$6.92 MSRP: $9.00
You Save: $2.08 (24%)
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil - Front; Front Crank Seal, Front Seal
- Position: Front
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2024-2025 Ford Mustang | 4 Cyl 2.3 L GAS, 8 Cyl 5.0 L GAS
- 2018-2019 Ford Mustang | 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)
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Ford Mustang Crankshaft Oil Seal Assembly Front
Part Number: XW4Z-6700-AA
$11.38 MSRP: $16.22
You Save: $4.84 (30%)
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil - Front
- Position: Front
- Replaces: XW4Z-6700-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2019 Ford Mustang | 6 Cyl 3.7L PFI NA, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.8L DOHC SC | 10-Speed Automatic Transmission (10R80), 5-Speed Automatic Transmission 5R55S, 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- 1999-2000 Ford Mustang | 8 Cyl 4.6L | 4AT 4R70W, 5MT
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Ford Mustang Crankshaft Oil Seal Retainer
Part Number: 6C3Z-6K301-A
$45.27 MSRP: $66.18
You Save: $20.91 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal; Oil Pan Rear Seal, Rear Main Seal Retainer
- Manufacturer Note: Gasket Is RTV. Refer To Workshop Manual For Proper Specs
- Replaces: 3L3Z-6K301-CA, 3L3Z-6K301-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2014 Ford Mustang | 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 5-Speed Automatic Transmission 5R55S, 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Crankshaft Oil Seal Retainer
Part Number: 6L3Z-6K301-AA
$40.83 MSRP: $58.67
You Save: $17.84 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal; Rear Main Seal, Rear Main Seal Retainer
- Replaces: 3L3Z-6K301-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2010 Ford Mustang | 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.8L DOHC SC | 5-Speed Automatic Transmission 5R55S, 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 6-Speed Manual Transmission (T56), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Crankshaft Oil Seal Assembly
Part Number: F4AZ-6701-A
$33.74 MSRP: $49.33
You Save: $15.59 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil
- Replaces: F3AZ-6701-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-2014 Ford Mustang | 8 Cyl 4.6L, 8 Cyl 4.6L DOHC EFI, 8 Cyl 4.6L DOHC EFI S/C, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 4-Speed Automatic Transmission 4R70W (AODE), 4AT 4R70W, 4AT 4R75W, 5-Speed Automatic Transmission 5R55S, 5-Speed Manual Transmission (T450D), 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 5MT, 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission Tremec T56, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Crankshaft Oil
Part Number: JR3Z-6701-A
$13.11 MSRP: $19.00
You Save: $5.89 (31%)
ADD TO CART
Product Specifications
- Other Name: Rear Main Seal, Rear Seal
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2025 Ford Mustang | 4 Cyl 2.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.2 L GAS | 10-Speed Automatic Transmission (10R80), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Crankshaf
Part Number: F3AZ-6701-B
$33.74 MSRP: $49.33
You Save: $15.59 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil
- Replaced by: F4AZ-6701-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2013 Ford Mustang | 8 Cyl 5.4L DOHC EFI S/C ALUM | 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Crankshaft Oil Seal Assembly Front
Part Number: XW4Z-6700-B
$5.50 MSRP: $7.83
You Save: $2.33 (30%)
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil - Front
- Position: Front
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2020 Ford Mustang | 4 Cyl 2.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.2 L GAS, 8 Cyl 5.2L | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Crankshaft Oil Seal Assembly
Part Number: AT4Z-6701-A
$30.78 MSRP: $45.00
You Save: $14.22 (32%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil; Crankshaft Seal, Rear Main Seal, Rear Seal
- Replaces: 7T4Z-6701-AA, 7T4Z-6701-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2019 Ford Mustang | 6 Cyl 3.7L PFI NA, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Crankshaft Oil Seal Retainer
Part Number: 1S7Z-6K301-BA
$74.10 MSRP: $108.33
You Save: $34.23 (32%)
ADD TO CART
Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal
- Manufacturer Note: Seal Kit With Installation Tool
- Replaced by: 1S7Z-6A321-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2019 Ford Mustang | 4 Cyl 2.3L TIVCT DI TC | 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 Crankshaft Oil Seal Assembly
Part Number: F5TZ-6701-A
$32.54 MSRP: $42.33
You Save: $9.79 (24%)
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil
- Replaces: D7RZ-6701-A, F77Z-6701-BA, F77Z-6701-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2010 Ford Mustang | 6 Cyl 4.0L SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 6-Speed Manual Transmission (T56), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang SEAL ASY - CRANKSHAFT OIL - FR
Part Number: MD8Z-6700-A
$3.44 MSRP: $4.90
You Save: $1.46 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2025 Ford Mustang | 4 Cyl 2.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.2 L GAS
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Ford Mustang Crankshaft Oil Seal Assembly
Part Number: F1SZ-6701-A
$18.01 MSRP: $26.33
You Save: $8.32 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1987-2004 Ford Mustang | 4 Cyl 2.3L, 6 Cyl 3.8L, 6 Cyl 3.8L OHV EFI, 6 Cyl 3.9L OHV EFI NA, 8 Cyl 5.0L | 4AT 4R70W, 4AT 4R75W, 4AT A4LD, 4AT AOD, 4AT AOD-E, 4-Speed Automatic Transmission 4R70W (AODE), 5MT, 5-Speed Manual Transmission (T450D), 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 6-Speed Manual Transmission Tremec T56, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Crankshaft Oil Seal Retainer
Part Number: BR3Z-6K301-B
$40.76 MSRP: $58.67
You Save: $17.91 (31%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal; Rear Main Seal Retainer
- Replaces: BR3Z-6K301-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2020 Ford Mustang | 4 Cyl 2.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.2 L GAS, 8 Cyl 5.2L | 10-Speed Automatic Transmission (10R80), 6-Speed Automatic Transmission (6R80), 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-3160, 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Crankshaft Oil Seal Retainer
Part Number: JR3Z-6K301-A
$42.29 MSRP: $61.83
You Save: $19.54 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal; Rear Main Seal Retainer
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2025 Ford Mustang | 4 Cyl 2.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.2 L GAS | 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 Crankshaft Oil Seal Assembly
Part Number: E8DZ-6701-A
$24.45 MSRP: $34.83
You Save: $10.38 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil
- Replaced by: F37Z-6701-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1981-1989 Ford Mustang | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C4, 3AT C5, 4AT A4LD, 4AT AOD, 4MT, 5MT
View related parts
Ford Mustang Crankshaft Oil Seal Retainer
Part Number: 3L3Z-6K301-AA
$45.67 MSRP: $66.18
You Save: $20.51 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Retainer - Crankshaft Oil Seal
- Replaced by: 6C3Z-6K301-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Ford Mustang | 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.8L DOHC SC | 5-Speed Automatic Transmission 5R55S, 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, 6-Speed Manual Transmission (T56), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Crankshaft Oil Seal Assembly
Part Number: E5ZZ-6701-A
Product Specifications
- Other Name: Seal Assy - Crankshaft Oil; Rear Main Seal
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1991-1993 Ford Mustang | 4 Cyl 2.3L | 4AT A4LD, 4AT AOD, 5MT
- 1982-1987 Ford Mustang | 4 Cyl 2.3L, 6 Cyl 3.3L, 6 Cyl 3.8L, 8 Cyl 4.2L, 8 Cyl 5.0L | 3AT C3, 3AT C5, 4AT A4LD, 4AT AOD, 4MT, 5MT

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Ford Mustang Crankshaft Seal

One of the parts in Ford Mustang cars is called the Crankshaft Seal which is situated at the front part of the vehicle's engine and whose main function is to keep oil from leaking out of the crankcase. Made from metal and rubber, this round seal is often placed to enable the performance of adequate lubrication within an engine in a bid to reduce friction as well as decrease wear as far as metallic components of an engine are concerned. For years, there are many kinds of Crankshaft Seals used in the Ford Mustang models, nonetheless, the main job has not changed. Whenever there is a problem with the Crankshaft Seal, it is manifested with oil leakage and poor performance especially when the car has many miles on the road showing that it needs replacement for efficient engine performance.

We provide a wide range of Ford Mustang Crankshaft Seal at the optimal prices. If you need Ford Mustang Crankshaft Seal, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your doorstep with a fast delivery service.

Ford Mustang Crankshaft Seal Parts Questions & Experts Answers

Crankshaft Oil Seal Assembly
F4AZ-6701-A
Q: How to replace the rear Crankshaft Seal in a V8 engine on Ford Mustang?
A:
Changing the rear Crankshaft Seal is indeed a very time consuming job which involves several special tools; it is therefore advised that doing these get ready with the required tools before starting with the job. It is advisable to loose the cable that connects to the negative post of the battery first. Then, proceed and lift the car appropriately and make sure it rests on jackstands. First, if it is requirements, eliminate the transmission and then uninstall the flywheel or the driveplate. Apply use of a special tool on crankshaft rear oil slinger so as to be followed by removal of the rear Crankshaft Seal from the retainer with the use of seal puller. Be careful when fitting the new seal not to scratch or in any way harm the crankshaft sealing surface or the bore of the engine block since this may lead to development of new oil leaks. Wipe the crankshaft and seal bore in the retainer clean, using a rag that is damp with a lacquer thinner or acetone. Ensure that the Crankshaft Seal contact surface on the crankshaft is smooth and free from any roughness that might damage the seal lip and therefore develop leaks, also ensure that there are no signs of excessive wear on this surface or it should not have groves. It is recommended to apply a thin layer of engine oil on the lip of a new seal and the outer diameter of the crankshaft; the edges of a new Crankshaft Seal should not be rolled. Place the new seal at the crankshaft such that if written, the word 'THIS SIDE OUT' should be facing the rear part of the engine. A special rear Crankshaft Seal installation tool is to be used to install it by using a hammer to drive the seal until it lies flat against the seal retainer all the way around. For 4.6L engines, the crankshaft rear oil slinger has to be bolted using a special tool. Last but not the least, to complete the process, reverse the above stated removal steps.