How to replace the extension house seal on Ford Mustang?

Oil leaks frequently occur due to wear of the extension housing oil seal or the transmission speed sensor seal, and replacement of these seals is relatively easy, as repairs can usually be performed without removing the transmission from the vehicle. If a leak is suspected at the extension housing seal, raise the vehicle and support it securely on jackstands. The extension housing seal is located at the rear end of the transmission, where the driveshaft flange is attached; if leaking, transmission lubricant will drip from the rear. Remove the driveshaft, support the transmission with a jack, remove the crossmember mounting bolts, and lower the transmission slightly to gain access to the transmission flange. Use a special tool to lock the output flange in place and remove the bolt, then use a puller to remove the flange along with the plastic retainer and O-ring. Carefully pry out the extension housing seal using a screwdriver, pry bar, or seal removal tool, ensuring not to damage the splines on the transmission output shaft. Install the new extension housing seal with a seal driver or a large deep socket, driving it into the bore squarely and ensuring it is completely seated. Reinstall the flange and nut or bolt, tightening until the flange is seated; for 5-speed models, remove the nut, install a new O-ring and plastic retainer, then reinstall and tighten the nut or bolt to the specified torque. Finally, install the crossmember and then the driveshaft. The transmission speed sensor is located on the transmission extension housing, and information regarding O-ring replacement for the transmission speed sensor is available.

Genuine Ford Mustang Transfer Case Seal

Transfer Case Output Shaft Seal

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18 Transfer Case Seals found

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Ford Mustang Seal Assembly - Oil
Part Number: 9L3Z-7052-A
$18.35 MSRP: $18.83
You Save: $0.48 (3%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Extension Housing Seal
- Manufacturer Note: Inner Diameter = 62.7MM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2014 Ford Mustang | 6 Cyl 3.7L PFI NA, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 6-Speed Automatic Transmission (6R80), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: 1R3Z-7052-AA
$15.16 MSRP: $22.17
You Save: $7.01 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- Manufacturer Note: Seal-Input
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2019 Ford Mustang | 4 Cyl 2.3L TIVCT DI TC, 6 Cyl 3.7L PFI NA, 6 Cyl 3.8L OHV EFI, 6 Cyl 3.9L OHV EFI NA, 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L DOHC EFI, 8 Cyl 4.6L DOHC EFI S/C, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.2L, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 5-Speed Manual Transmission TR3650, 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-3160, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: 4R3Z-7052-CA
$13.22 MSRP: $18.83
You Save: $5.61 (30%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Seal Assy - Oil
- Manufacturer Note: Shift Shaft
- 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, 6 Cyl 3.7L PFI NA, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.2L | 6-Speed Manual Transmission-3160, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- 2005-2010 Ford Mustang | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 5-Speed Manual Transmission TR3650, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: F7AZ-7052-A
$15.56 MSRP: $22.17
You Save: $6.61 (30%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Seal Assy - Oil
- Replaced by: 7W7Z-7052-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2004 Ford Mustang | 6 Cyl 3.8L, 6 Cyl 3.8L OHV EFI, 6 Cyl 3.9L OHV EFI NA, 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 | 4AT 4R70W, 4AT 4R75W, 4-Speed Automatic Transmission 4R70W (AODE), 5MT, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: 4R3Z-7052-AA
$23.40 MSRP: $33.33
You Save: $9.93 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- 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, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 5-Speed Manual Transmission T5OD, 5-Speed Manual Transmission TR3650, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: BR3Z-7052-A
$10.73 MSRP: $15.28
You Save: $4.55 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- Manufacturer Note: Seal-rear output
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2019 Ford Mustang | 4 Cyl 2.3L TIVCT DI TC, 6 Cyl 3.7L PFI NA, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA | 6-Speed Manual Transmission-MT82, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: 7R3Z-7052-A
$28.50 MSRP: $41.67
You Save: $13.17 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- Manufacturer Note: Rear Output
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2019 Ford Mustang | 4 Cyl 2.3L TIVCT DI TC, 6 Cyl 3.7L PFI NA, 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.2L, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 6-Speed Manual Transmission (T56), 6-Speed Manual Transmission-3160, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: 6L2Z-7052-CA
$9.95 MSRP: $14.17
You Save: $4.22 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- Manufacturer Note: Inner Diameter = 27.0MM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2017 Ford Mustang | 4 Cyl 2.3L TIVCT DI TC, 6 Cyl 3.7L PFI NA, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.2L, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 6-Speed Automatic Transmission (6R80), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: E2DZ-7052-A
$9.95 MSRP: $14.17
You Save: $4.22 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1993 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
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Ford Mustang Seal Assembly - Oil
Part Number: FL3Z-7052-A
$18.14 MSRP: $25.83
You Save: $7.69 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2014-2017 Ford Mustang | 4 Cyl 2.3L TIVCT DI TC, 6 Cyl 3.7L PFI NA, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.0L DOHC EFI Modular, 8 Cyl 5.0L MOD DOHC SEFI NA, 8 Cyl 5.2L, 8 Cyl 5.8L DOHC SC | 6-Speed Automatic Transmission (6R80), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: F6ZZ-7052-A
$9.95 MSRP: $14.17
You Save: $4.22 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Oil
- Replaces: E9TZ-7052-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1983-2010 Ford Mustang | 4 Cyl 2.3L, 6 Cyl 3.8L, 6 Cyl 3.8L OHV EFI, 6 Cyl 3.9L OHV EFI NA, 6 Cyl 4.0L SOHC EFI, 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 5.0L, 8 Cyl 5.4L, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L, 8 Cyl 5.8L DOHC SC | 3AT C3, 3AT C5, 4AT 4R70W, 4AT A4LD, 4AT AOD, 4MT, 5-Speed Manual Transmission (T450D), 5-Speed Manual Transmission T5OD, 5MT, 6-Speed Manual Transmission Tremec T56, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Seal Assembly - Oil
Part Number: 1R3Z-7052-CA
$23.40 MSRP: $33.33
You Save: $9.93 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- Manufacturer Note: Seal-rear output
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2004 Ford Mustang | 6 Cyl 3.8L OHV EFI, 6 Cyl 3.9L OHV EFI NA, 8 Cyl 4.6L DOHC EFI, 8 Cyl 4.6L DOHC EFI S/C, 8 Cyl 4.6L SOHC EFI | 5-Speed Manual Transmission TR3650, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Seal Assembly - Oil
Part Number: E9TZ-7052-A
$9.95 MSRP: $14.17
You Save: $4.22 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Oil
- Replaced by: F6ZZ-7052-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1983-2000 Ford Mustang | 4 Cyl 2.3L, 6 Cyl 3.8L, 8 Cyl 4.6L, 8 Cyl 5.0L, 8 Cyl 5.4L, 8 Cyl 5.8L | 3AT C3, 3AT C5, 4AT 4R70W, 4AT A4LD, 4AT AOD, 4MT, 5MT
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Ford Mustang Seal Assembly - Oil
Part Number: 4R3Z-7052-A
$11.53 MSRP: $15.00
You Save: $3.47 (24%)
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Oil
- 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, 8 Cyl 4.6L SOHC EFI, 8 Cyl 5.4L DOHC EFI S/C ALUM, 8 Cyl 5.8L DOHC SC | 5-Speed Manual Transmission T5OD, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: F4ZZ-7052-A
$15.16 MSRP: $22.17
You Save: $7.01 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- Manufacturer Note: Extension hsg.
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994-2004 Ford Mustang | 6 Cyl 3.8L, 6 Cyl 3.8L OHV EFI, 6 Cyl 3.9L OHV EFI NA, 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 5.0L, 8 Cyl 5.4L, 8 Cyl 5.8L | 4AT 4R70W, 5MT, 5-Speed Manual Transmission T5OD, 6-Speed Manual Transmission Tremec T56, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Ford Mustang Seal Assembly - Oil
Part Number: XW4Z-7052-AA
$9.95 MSRP: $14.17
You Save: $4.22 (30%)
ADD TO CART
Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- 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, 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, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: F6ZZ-7052-B
Product Specifications
- Other Name: Seal Assy - Oil
- Manufacturer Note: Output seal (in extension housing)
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-2004 Ford Mustang | 6 Cyl 3.8L, 6 Cyl 3.8L OHV EFI, 6 Cyl 3.9L OHV EFI NA, 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 | 4AT 4R70W, 5MT, 5-Speed Manual Transmission (T450D), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Ford Mustang Seal Assembly - Oil
Part Number: D9BZ-7052-A
Product Specifications
- Other Name: Seal Assy - Oil; Extension Housing Seal
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994-1995 Ford Mustang | 6 Cyl 3.8L, 8 Cyl 5.0L, 8 Cyl 5.8L | 5MT
- 1980-1983 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, 4MT, 5MT

Ford Mustang Transfer Case Seal

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Ford Mustang Transfer Case Seal Parts Questions & Experts Answers

Seal Assembly - Oil
1R3Z-7052-AA
Q: How to replace the extension house seal on Ford Mustang?
A: Oil leaks frequently occur due to wear of the extension housing oil seal or the transmission speed sensor seal, and replacement of these seals is relatively easy, as repairs can usually be performed without removing the transmission from the vehicle. If a leak is suspected at the extension housing seal, raise the vehicle and support it securely on jackstands. The extension housing seal is located at the rear end of the transmission, where the driveshaft flange is attached; if leaking, transmission lubricant will drip from the rear. Remove the driveshaft, support the transmission with a jack, remove the crossmember mounting bolts, and lower the transmission slightly to gain access to the transmission flange. Use a special tool to lock the output flange in place and remove the bolt, then use a puller to remove the flange along with the plastic retainer and O-ring. Carefully pry out the extension housing seal using a screwdriver, pry bar, or seal removal tool, ensuring not to damage the splines on the transmission output shaft. Install the new extension housing seal with a seal driver or a large deep socket, driving it into the bore squarely and ensuring it is completely seated. Reinstall the flange and nut or bolt, tightening until the flange is seated; for 5-speed models, remove the nut, install a new O-ring and plastic retainer, then reinstall and tighten the nut or bolt to the specified torque. Finally, install the crossmember and then the driveshaft. The transmission speed sensor is located on the transmission extension housing, and information regarding O-ring replacement for the transmission speed sensor is available.

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