How to service the differential cover on a 9.75-inch ring gear on Lincoln Navigator?

You should begin differential service of a Ford 9.75-inch ring gear by turning off the air suspension switch in the right-hand kick panel to prevent air spring pressure changes while performing the tasks. Lift the vehicle and move the rear stabilizer bar together with the rear axle tracking bar to a safe location. The lubricant can be collected in a reusable container after removing 12 differential housing cover bolts and disconnecting the differential housing cover. Both the rear axle housing and differential housing cover require cleaning with oil removal before application to eliminate contaminants inside the rear axle. A continuous bead of Sealant D6AZ-19562-AA Clear Silicone Rubber or its equivalent which satisfies Ford specification ESB-M4G92-A must be applied to the differential housing cover. Apply the cover to the differential housing within a 15-minute timeframe after silicone placement because late installation requires fresh application of sealant. Sealant should completely cure through a waiting period of one hour before performing lubricant addition to the unit. The customer should tighten the bolt before filling the rear axle with specified lubricant and then add the filler plug. The procedure for Traction-Lok axles requires a prior addition of 118 ml (4 ounces) Ford Additive Friction Modifier C8AZ-19B546-A or equivalent to Ford specification EST-M2C1 18-A before filling the rear axle with lubricant. Finally, lower the vehicle.

How to Service and Repair the Differential Cover on Lincoln Town Car?

You should start by turning off air suspension power from the switch located at the LH side of the luggage compartment to protect against air spring inflation or deflation. Set the neutral gear and position the vehicle on a hoist. You should remove the differential housing cover by taking out its bolts and drain out the lubricant from the differential housing. Both differential housing and cover must receive clean machining before installation while their interior surfaces should get properly covered against contamination. Use a continuous run of silicone gasket and sealant along the differential housing cover before installing it within 15 minutes to prevent needing new sealant. The silicone needs a minimum of one hour cure time to ready the axle for lubricant insertion. Caulk the differential housing cover using silicone gasket and sealant before you bolt it into place and tighten all nuts beginning from the center of the pattern to reach 45 Nm (33 ft. lbs). Proceed to install the axle tag bolts and tighten them to 31 Nm (23 ft. lbs). The procedure for adding 118 ml (4 oz) of additive friction modifier requires a clean tool recess on the Traction-Lok(R) axles before affixing the axle fill plug. The rear axle needs 2.37 liters (5.0 pints) of lubricant which must be installed with the plug getting tightness of 30 Nm (22 ft. lbs). You need to reactivate the system and lower the vehicle when it has air suspension.

OEM Lincoln Differential Cover

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15 Differential Covers found

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Lincoln Differential Cover, Rear Part Number: BL3Z-4033-C
$53.82 MSRP: $77.00
You Save: $23.18 (31%)
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Product Specifications
- Other Name: Cover; Differential Cover, Rear; Axle Cover; Rear Cover
- Position: Rear
- Replaces: BL3Z-4033-A, F75Z-4033-AA
Fits the following Lincoln Models:
- Blackwood | 2002 | Base | 8 Cyl 5.4 L GAS
- Mark LT | 2006-2008 | Base | 8 Cyl 5.4 L GAS
- Navigator | 1998-2001 | Base | 8 Cyl 5.4 L GAS
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Lincoln Axle Cover, Rear Part Number: F4TZ-4033-A
$37.79 MSRP: $55.00
You Save: $17.21 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cover; Differential Cover, Rear; Rear Cover
- Position: Rear
Fits the following Lincoln Models:
- Mark LT | 2006-2008 | Base | 8 Cyl 5.4 L GAS
- Navigator | 1998-2001 | Base | 8 Cyl 5.4 L GAS
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Lincoln Differential Cover, Front Part Number: 8L1Z-4033-A
$28.44 MSRP: $40.33
You Save: $11.89 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Cover; Differential Cover, Front; Axle Cover; Rear Cover
- Position: Front
- Replaces: 7L1Z-4033-B
Fits the following Lincoln Models:
- Mark LT | 2007-2008 | Base | 8 Cyl 5.4 L GAS
- Navigator | 2007-2024 | Base, Black Label, L, L Base, L Black Label, L Livery, L Luxury, L Reserve, L Select, L Ultimate, Luxury, Premiere, Reserve, Select, Ultimate | 6 Cyl 3.5 L GAS, 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS
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Lincoln Differential Cover, Rear Part Number: 7E5Z-4033-A
$88.04 MSRP: $128.15
You Save: $40.11 (32%)
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Product Specifications
- Other Name: Cover - Rear Axle Housing; Differential Cover, Rear; Axle Cover; Rear Cover; Differential Assy Cover; Cover
- Position: Rear
Fits the following Lincoln Models:
- MKS | 2009-2016 | Base, EcoBoost | 6 Cyl 3.5 L GAS, 6 Cyl 3.7 L GAS
- MKT | 2010-2012 | Base, EcoBoost | 6 Cyl 3.5 L GAS, 6 Cyl 3.7 L GAS
- MKX | 2007-2015 | Base | 6 Cyl 3.5 L GAS, 6 Cyl 3.7 L GAS
- MKZ | 2007-2012 | Base | 6 Cyl 3.5 L GAS
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Lincoln Differential Cover, Rear Part Number: 5L1Z-4033-A
$220.98 MSRP: $324.50
You Save: $103.52 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cover - Rear Axle Housing; Differential Cover, Rear; Axle Cover; Rear Cover
- Position: Rear
- Replaces: 2L1Z-4033-AA
Fits the following Lincoln Models:
- Navigator | 2002-2017 | Base, L, L Luxury, L Reserve, L Select, L Ultimate, Luxury, Reserve, Select, Ultimate | 6 Cyl 3.5 L GAS, 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS
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Lincoln Differential Cover, Front Part Number: 2L1Z-4033-CA
$235.97 MSRP: $346.50
You Save: $110.53 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cover; Differential Cover, Front, Rear; Axle Cover; Cover Assembly; Rear Cover
- Position: Front
- Replaces: F8AZ-4033-AA
Fits the following Lincoln Models:
- Mark LT | 2006 | Base | 8 Cyl 5.4 L GAS
- Navigator | 2003-2006 | Base, Luxury, Ultimate | 8 Cyl 5.4 L GAS
- Town Car | 1990-2004 | Anniversary, Base, Cartier, Cartier L, Cypress, Executive, Executive L, Executive Protection Series, Jack Nicklaus, Protection Series, Signature, Touring Edition, Tournament Edition, Ultimate, Ultimate L | 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS
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Lincoln Axle Cover, Rear Part Number: 4W1Z-4033-BA
$114.39 MSRP: $166.50
You Save: $52.11 (32%)
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Product Specifications
- Other Name: Cover; Differential Cover, Rear; Cover Assembly; Rear Cover
- Position: Rear
Fits the following Lincoln Models:
- Town Car | 2005-2011 | Designer Series, Executive, Executive L, Protection Series, Signature, Signature L, Signature Limited | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Lincoln Differential Cover, Front Part Number: F75Z-4033-BB
$128.50 MSRP: $174.87
You Save: $46.37 (27%)
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Product Specifications
- Other Name: Cover; Differential Cover, Front; Axle Cover; Rear Cover
- Manufacturer Note: Cover, TE/TN
- Position: Front
- Replaces: F65Z-4033-AA
Fits the following Lincoln Models:
- Navigator | 1998-2002 | Base | 8 Cyl 5.4 L GAS
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Lincoln Differential Cover, Rear Part Number: 2L1Z-4033-BA
$121.65 MSRP: $165.55
You Save: $43.90 (27%)
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Product Specifications
- Other Name: Cover - Rear Axle Housing; Differential Cover, Rear; Axle Cover; Rear Cover
- Manufacturer Note: Cover asy. (housing) - aluminum - includes 390943-S100 plug
- Position: Rear
Fits the following Lincoln Models:
- Navigator | 2002 | Base | 8 Cyl 5.4 L GAS
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Lincoln Axle Cover, Rear Part Number: LC3Z-4033-A
$69.20 MSRP: $106.50
You Save: $37.30 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cover; Differential Cover, Rear; Rear Cover
- Position: Rear
Fits the following Lincoln Models:
- Mark LT | 2006-2008 | Base | 8 Cyl 5.4 L GAS
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Lincoln Axle Cover, Rear Part Number: HL1Z-4033-A
$272.17 MSRP: $399.67
You Save: $127.50 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cover - Rear Axle Housing; Differential Cover, Rear; Rear Cover
- Position: Rear
Fits the following Lincoln Models:
- Navigator | 2018-2024 | Base, Black Label, L Base, L Black Label, L Livery, L Reserve, L Select, Premiere, Reserve, Select | 6 Cyl 3.5 L GAS
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Lincoln Axle Cover, Rear Part Number: L1MZ-4033-C
$111.55 MSRP: $171.67
You Save: $60.12 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cover - Rear Axle Housing; Differential Cover, Rear; Rear Cover; Cover
- Position: Rear
- Replaces: L1MZ-4033-A
Fits the following Lincoln Models:
- Aviator | 2020-2023 | Base, Black Label, Black Label Grand Touring, Grand Touring, Livery, Reserve | 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)
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Lincoln Axle Cover, Rear Part Number: XR3Z-4033-AA
Product Specifications
- Other Name: Cover - Rear Axle Housing
- Manufacturer Note: Cobra (IRS)
- Position: Rear
Fits the following Lincoln Models:
- Mark VIII | 1994-1998 | Anniversary, Base, LSC | 8 Cyl 4.6 L GAS
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Lincoln Axle Cover, Rear Part Number: 3W4Z-4033-CA
Product Specifications
- Other Name: Cover - Rear Axle Housing; Differential Cover, Rear; Cover Assembly
- Position: Rear
Fits the following Lincoln Models:
- LS | 2003-2006 | Appearance, Base, LSE, Luxury, Premium, Sport, Ultimate | 6 Cyl 3.0 L GAS, 8 Cyl 3.9 L GAS
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Lincoln Axle Cover, Rear Part Number: XW4Z-4033-BA
Product Specifications
- Other Name: Cover - Rear Axle Housing; Differential Cover, Rear; Cover Assembly
- Position: Rear
Fits the following Lincoln Models:
- LS | 2000-2002 | Base, LSE | 6 Cyl 3.0 L GAS, 8 Cyl 3.9 L GAS

Lincoln Differential Cover

OEM Differential Cover boasts unmatched quality. Each part goes through full quality checks. They adhere to Lincoln's official factory standards. These steps remove flaws and inconsistencies. So you can get Differential Cover with long life and a perfect fit. Come to our website and find genuine Lincoln parts. We keep a wide inventory of OEM parts at the highly affordable prices. It's easy to search, compare, and pick what you need. You'll love the clear info and simple checkout. We offer top-rated customer service, and we reply fast. We also ship promptly to ensure your order arrives on time.

Lincoln Differential Cover Parts and Q&A

Differential Cover, Rear
BL3Z-4033-C
Q: How to service the differential cover on a 9.75-inch ring gear on Lincoln Navigator?
A:
You should begin differential service of a Ford 9.75-inch ring gear by turning off the air suspension switch in the right-hand kick panel to prevent air spring pressure changes while performing the tasks. Lift the vehicle and move the rear stabilizer bar together with the rear axle tracking bar to a safe location. The lubricant can be collected in a reusable container after removing 12 differential housing cover bolts and disconnecting the differential housing cover. Both the rear axle housing and differential housing cover require cleaning with oil removal before application to eliminate contaminants inside the rear axle. A continuous bead of Sealant D6AZ-19562-AA Clear Silicone Rubber or its equivalent which satisfies Ford specification ESB-M4G92-A must be applied to the differential housing cover. Apply the cover to the differential housing within a 15-minute timeframe after silicone placement because late installation requires fresh application of sealant. Sealant should completely cure through a waiting period of one hour before performing lubricant addition to the unit. The customer should tighten the bolt before filling the rear axle with specified lubricant and then add the filler plug. The procedure for Traction-Lok axles requires a prior addition of 118 ml (4 ounces) Ford Additive Friction Modifier C8AZ-19B546-A or equivalent to Ford specification EST-M2C1 18-A before filling the rear axle with lubricant. Finally, lower the vehicle.
Axle Cover, Rear
4W1Z-4033-BA
Q: How to Service and Repair the Differential Cover on Lincoln Town Car?
A:
You should start by turning off air suspension power from the switch located at the LH side of the luggage compartment to protect against air spring inflation or deflation. Set the neutral gear and position the vehicle on a hoist. You should remove the differential housing cover by taking out its bolts and drain out the lubricant from the differential housing. Both differential housing and cover must receive clean machining before installation while their interior surfaces should get properly covered against contamination. Use a continuous run of silicone gasket and sealant along the differential housing cover before installing it within 15 minutes to prevent needing new sealant. The silicone needs a minimum of one hour cure time to ready the axle for lubricant insertion. Caulk the differential housing cover using silicone gasket and sealant before you bolt it into place and tighten all nuts beginning from the center of the pattern to reach 45 Nm (33 ft. lbs). Proceed to install the axle tag bolts and tighten them to 31 Nm (23 ft. lbs). The procedure for adding 118 ml (4 oz) of additive friction modifier requires a clean tool recess on the Traction-Lok(R) axles before affixing the axle fill plug. The rear axle needs 2.37 liters (5.0 pints) of lubricant which must be installed with the plug getting tightness of 30 Nm (22 ft. lbs). You need to reactivate the system and lower the vehicle when it has air suspension.