How to service the axle shaft of a 9.75 Inch Rear Differential on 2004 Ford F-150 Heritage?

The first step to serve the Ford 9.75 Inch Rear Differential axle shaft requires powering off the air suspension system using the air suspension switch inside the RH kick panel area to avoid unexpected pressure changes in air springs. Start by lifting the vehicle and supporting it before removing wound components that consist of tire assemblies with their differential housing cover for draining lubricant. After brake caliper disc removal follow the process of shaft differential pinion extraction by discarding its lock bolt and extracting the shaft. After pulling the axle shafts toward the inner position avoid injuring any rubber O-ring material within the axle shaft grooves. Extract the two axle shafts by following a precise method to prevent damage to the wheel bearing oil seal. When installing the two axle shafts apply Premium Long-Life Grease XG-1-C or an equivalent to the lip of the wheel bearing oil seal that meets Ford specification ESA-MIC75-B. Install the axle shafts while ensuring the seal stays unaffected. Insert each U-washer onto its respective axle shaft button and extend the shaft. You must apply Threadlock and Sealer EOAZ-19554-AA or an equivalent material that satisfies Ford specifications WSK-M2G35I-A5 to the lock bolt threads when you cannot use a new pinion shaft lock bolt. Then position the differential pinion shaft to mate with the case lock bolt hole before tightening a new lock bolt. The brake discs can be reinstalled with the differential housing cover followed by filling the specified rear axle housing lubrication and completing tire and wheel reattachment.

OEM 2004 Ford F-150 Heritage Differential

Front Differential

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2004 Ford F-150 Heritage Axle Housing, Rear Part Number: AL3Z-4026-A
$262.19 MSRP: $355.38
You Save: $93.19 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Differential Assembly; Differential Housing, Rear; Differential; Differential Case
- Position: Rear
- Replaces: 1L2Z-4026-BA, 9L3Z-4026-D, F4TZ-4026-B, 2L2Z-4026-AA, F85Z-4026-AA
- Base No.: 4026
- Item Weight: 20.80 Pounds
- Item Dimensions: 11.4 x 10.3 x 9.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: AL3Z-4026-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
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2004 Ford F-150 Heritage Differential Case Part Number: F75Z-4204-BA
$135.07 MSRP: $186.85
You Save: $51.78 (28%)
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Product Specifications
- Other Name: Case - Differential; Differential
- Base No.: 4204
- Item Weight: 23.50 Pounds
- Item Dimensions: 12.5 x 12.7 x 8.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: F75Z-4204-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
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2004 Ford F-150 Heritage Differential Case Part Number: 9L3Z-4204-B
$129.39 MSRP: $173.85
You Save: $44.46 (26%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Case - Differential; Case; Differential
- Replaces: 1L2Z-4204-AA, 1L2Z-4204-BA, F85Z-4204-AA, E7TZ-4204-F
- Base No.: 4204
- Item Weight: 13.10 Pounds
- Item Dimensions: 10.2 x 10.3 x 9.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 9L3Z-4204-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
View related parts
2004 Ford F-150 Heritage Differential Case, Front Part Number: 9L3Z-4204-A
$142.56 MSRP: $203.08
You Save: $60.52 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Case - Differential; Differential Carrier, Front; Case; Differential
- Position: Front
- Replaces: E7TZ-4204-E
- Base No.: 4204
- Item Weight: 13.10 Pounds
- Item Dimensions: 11.4 x 11.1 x 11.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 9L3Z-4204-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
View related parts
2004 Ford F-150 Heritage Differential Case Part Number: XW4Z-4204-AA
$102.67 MSRP: $145.85
You Save: $43.18 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Case - Differential; Differential
- Replaces: F5AZ-4204-A
- Base No.: 4204
- Item Weight: 11.30 Pounds
- Item Dimensions: 8.3 x 8.1 x 9.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: XW4Z-4204-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
View related parts
2004 Ford F-150 Heritage Differential Case Part Number: LC3Z-4205-A
$213.04 MSRP: $306.31
You Save: $93.27 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Case - Differential
- Replaces: BC3Z-4205-B, E7TZ-4204-C
- Condition: New
- Fitment Type: Direct Replacement
- SKU: LC3Z-4205-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
View related parts
2004 Ford F-150 Heritage Differential Case Part Number: 9L3Z-4204-D
$196.48 MSRP: $264.00
You Save: $67.52 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Case - Differential; Differential
- Replaces: F75Z-4204-BB
- Base No.: 4204
- Item Weight: 21.40 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 9L3Z-4204-D
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
View related parts
2004 Ford F-150 Heritage Differential Assembly Part Number: 9L3Z-4026-J
$286.02 MSRP: $387.69
You Save: $101.67 (27%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Differential Case; Differential
- Replaces: 7L3Z-4026-A, 9L3Z-4026-C, 9L3Z-4026-F
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 9L3Z-4026-J
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
View related parts
2004 Ford F-150 Heritage Pinion Gear Part Number: 8L3Z-4209-R
$430.73 MSRP: $583.85
You Save: $153.12 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Gear And Pinion Assembly - Driving; Ring And Pinion; Ring & Pinion
- Replaces: 8L3Z-4209-LA, 8L3Z-4209-L
- Item Weight: 33.50 Pounds
- Item Dimensions: 13.9 x 13.8 x 10.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 8L3Z-4209-R
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
View related parts
2004 Ford F-150 Heritage Differential Assembly, Rear Part Number: 9L3Z-4026-H
$264.83 MSRP: $380.77
You Save: $115.94 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Differential Carrier Housing, Rear; Differential Carrier, Rear; Differential; Differential Case; Case
- Position: Rear
- Replaces: 9L3Z-4204-C, 9L3Z-4026-G, F75Z-4204-AA
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 9L3Z-4026-H
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
View related parts
2004 Ford F-150 Heritage Differential Assembly Part Number: 8C3Z-4026-A
Product Specifications
- Other Name: Differential Case; Differential
- Manufacturer Note: 2 Pinion
- Replaces: F75Z-4026-DA
- Base No.: 4026
- Item Weight: 39.30 Pounds
- Item Dimensions: 12.4 x 10.5 x 10.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 8C3Z-4026-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
View related parts
2004 Ford F-150 Heritage Differential Carrier, Front Part Number: F65Z-3010-AA
Product Specifications
- Other Name: Housing - Front Axle; Differential Housing, Front; Differential; Axle Housing
- Manufacturer Note: Housing
- Position: Front
- Base No.: 3010
- Item Weight: 5.50 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: F65Z-3010-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2004 Ford F-150 Heritage Submodels:
- SVT Lightning, XL, XLT | 6 Cyl 4.2 L GAS, 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS

2004 Ford F-150 Heritage Differential

If you're seeking quality and affordability, look no further than our extensive inventory of genuine 2004 Ford F-150 Heritage Differential available at FordPartsDeal.com. You can confidently purchase our OEM 2004 Ford F-150 Heritage Differential as they are supported by the manufacturer's warranty and our hassle-free return policy, alongside the benefit of our fast delivery service.

2004 Ford F-150 Heritage Differential Parts Q&A

Q: How to service the axle shaft of a 9.75 Inch Rear Differential on 2004 Ford F-150 Heritage?
A: The first step to serve the Ford 9.75 Inch Rear Differential axle shaft requires powering off the air suspension system using the air suspension switch inside the RH kick panel area to avoid unexpected pressure changes in air springs. Start by lifting the vehicle and supporting it before removing wound components that consist of tire assemblies with their differential housing cover for draining lubricant. After brake caliper disc removal follow the process of shaft differential pinion extraction by discarding its lock bolt and extracting the shaft. After pulling the axle shafts toward the inner position avoid injuring any rubber O-ring material within the axle shaft grooves. Extract the two axle shafts by following a precise method to prevent damage to the wheel bearing oil seal. When installing the two axle shafts apply Premium Long-Life Grease XG-1-C or an equivalent to the lip of the wheel bearing oil seal that meets Ford specification ESA-MIC75-B. Install the axle shafts while ensuring the seal stays unaffected. Insert each U-washer onto its respective axle shaft button and extend the shaft. You must apply Threadlock and Sealer EOAZ-19554-AA or an equivalent material that satisfies Ford specifications WSK-M2G35I-A5 to the lock bolt threads when you cannot use a new pinion shaft lock bolt. Then position the differential pinion shaft to mate with the case lock bolt hole before tightening a new lock bolt. The brake discs can be reinstalled with the differential housing cover followed by filling the specified rear axle housing lubrication and completing tire and wheel reattachment.