aFe POWER Pro Series Rear Differential Cover Black with Machined Fins (46-71490B) - 2023-2026 Ford F-250/F-350 Sterling 11.6
Upgrade the rear axle on your 2023-2026 Ford F-250 or F-350 Super Duty with the aFe POWER Pro Series Rear Differential Cover. Designed for Sterling 11.6 rear axles, this high-strength A356 cast aluminum cover adds approximately 1.46 quarts of fluid capacity over stock while incorporating internal and external cooling fins, magnetic plugs, and an oil level sight glass for easier servicing and added protection.
The black powder-coated finish helps protect the cover from harsh conditions, while machined fins add cooling surface area and a clean performance appearance. A neodymium magnetic drain plug and deep-reach magnetic fill plug help capture loose metallic particles, while the oil-level plug and integrated sight glass make it easier to maintain and monitor the correct fluid level.
Features
- Designed specifically for Sterling 11.6 rear axles
- Constructed from high-strength A356 cast aluminum
- Black powder-coated finish for added durability
- Machined cooling fins
- Adds approximately 1.46 quarts of fluid capacity over stock
- Integrated internal and external fins help transfer heat from the differential fluid
- Neodymium magnetic drain plug helps capture loose metallic particles
- Deep-reach magnetic fill plug provides additional particle protection
- Integrated oil level sight glass allows quick fluid level and condition checks
- Precisely positioned oil-level plug helps prevent overfilling
- Includes high-quality stainless-steel installation hardware
- Designed for towing, hauling, and demanding drivetrain use
Increased Fluid Capacity
The Pro Series cover adds approximately 1.46 quarts of fluid capacity compared to the factory cover. The additional capacity helps support lubrication and temperature management during extended towing, hauling, and other demanding operating conditions.
Built-In Cooling Fins
Integrated internal and external fins increase available surface area and help transfer heat from the differential fluid to the surrounding air. This provides additional thermal management without requiring an external differential cooler.
Magnetic Drain & Fill Plugs
A neodymium magnetic drain plug and deep-reach magnetic fill plug help capture loose metallic particles circulating through the differential fluid. This provides an additional layer of protection for gears, bearings, and other internal axle components.
Oil Level Sight Glass
The integrated sight glass makes it easy to visually check the differential fluid level and monitor the visible condition of the oil during routine inspections.
Oil-Level Plug
A precisely positioned oil-level plug helps prevent accidental overfilling and eliminates guesswork when servicing the Sterling 11.6 rear axle.
Specifications
- Product Type: Rear Differential Cover
- Series: Pro Series
- Axle Compatibility: Sterling 11.6 Rear Axle
- Material: A356 Cast Aluminum
- Finish: Black Powder Coat
- Finishing Detail: Machined Fins
- Additional Fluid Capacity: Approximately 1.46 Quarts Over Stock
- Drain Plug: Neodymium Magnetic
- Fill Plug: Deep-Reach Magnetic
- Oil-Level Plug: Included
- Oil Level Sight Glass: Included
- Hardware: Stainless Steel
- Part Number: 46-71490B
Fitment
- 2023 Ford F-250 Super Duty 6.7L Power Stroke Diesel with Sterling 11.6 Rear Axle
- 2023 Ford F-250 Super Duty 7.3L Gas V8 with Sterling 11.6 Rear Axle
- 2023 Ford F-350 Super Duty 6.7L Power Stroke Diesel with Sterling 11.6 Rear Axle
- 2023 Ford F-350 Super Duty 7.3L Gas V8 with Sterling 11.6 Rear Axle
- 2024 Ford F-250 Super Duty 6.7L Power Stroke Diesel with Sterling 11.6 Rear Axle
- 2024 Ford F-250 Super Duty 7.3L Gas V8 with Sterling 11.6 Rear Axle
- 2024 Ford F-350 Super Duty 6.7L Power Stroke Diesel with Sterling 11.6 Rear Axle
- 2024 Ford F-350 Super Duty 7.3L Gas V8 with Sterling 11.6 Rear Axle
- 2025 Ford F-250 Super Duty 6.7L Power Stroke Diesel with Sterling 11.6 Rear Axle
- 2025 Ford F-250 Super Duty 7.3L Gas V8 with Sterling 11.6 Rear Axle
- 2025 Ford F-350 Super Duty 6.7L Power Stroke Diesel with Sterling 11.6 Rear Axle
- 2025 Ford F-350 Super Duty 7.3L Gas V8 with Sterling 11.6 Rear Axle
- 2026 Ford F-250 Super Duty 6.7L Power Stroke Diesel with Sterling 11.6 Rear Axle
- 2026 Ford F-250 Super Duty 7.3L Gas V8 with Sterling 11.6 Rear Axle
- 2026 Ford F-350 Super Duty 6.7L Power Stroke Diesel with Sterling 11.6 Rear Axle
- 2026 Ford F-350 Super Duty 7.3L Gas V8 with Sterling 11.6 Rear Axle
Additional Notes
- Fits Sterling 11.6 rear axles only.
- Stainless-steel installation hardware is included.
- This product does not require a CARB EO number.
- Verify rear axle type before ordering.
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