SKU: 402-900-3068 / UPC: 4029003068
ATS Diesel Sterling 10.25″ 12-Bolt Differential Cover for 1983–2010 Ford F-250 / F-350 / E-Series / Excursion
The ATS Diesel Sterling 10.25″ 12-Bolt Differential Cover is a heavy-duty upgrade designed to replace the stock cover on 1983–2010 Ford trucks and vans equipped with the Sterling 10.25-inch 12-bolt rear axle.
This cast aluminum cover increases gear oil capacity by 2.5 quarts, improves cooling, and provides better protection for the ring and pinion gears during towing, hauling, or off-road use. It features internal and external cooling fins, a magnetic drain plug, and integrated baffles to control oil flow and reduce sloshing.
Key Features
- Cast Aluminum Construction – Strong, lightweight, and excellent at dissipating heat
- Increased Fluid Capacity – Holds 2.5 quarts more gear oil than stock for better lubrication and cooling
- Cooling Fin Design – Internal and external fins help lower operating temperatures
- Magnetic Drain Plug – Captures metal particles to keep fluid clean and reduce wear
- Integrated Baffles – Controls oil movement to keep gears properly lubricated during hard driving
- Wrinkle Black Powder Coat – Durable, corrosion-resistant finish
Specifications
| Detail | Value |
|---|---|
| Brand | ATS Diesel |
| Type | Differential Cover |
| Axle | Sterling 10.25″ 12-Bolt |
| Material | Cast Aluminum |
| Finish | Wrinkle Black Powder Coat |
| Additional Capacity | +2.5 Quarts |
| Country of Origin | United States |
| Warranty | ATS Diesel Limited Lifetime Warranty |
Whats Included
- ATS Diesel Differential Cover
- Gasket and RTV Sealant
- All Necessary Hardware
- Magnetic Drain Plug
- Installation Instructions
Product Notes
- Designed for Ford Sterling 10.25″ 12-bolt rear axles only
- Professional installation recommended
- Use 4–5 quarts of 75W-90 or synthetic gear oil after installation
This Part Fits
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 1983–1997 | Ford | F-250 / F-350 | Sterling 10.25″ 12-Bolt Axle |
| 1999–2010 | Ford | F-250 / F-350 Super Duty | Sterling 10.25″ 12-Bolt Axle |
| 1983–1998 | Ford | E-250 / E-350 Econoline & Club Wagon | Sterling 10.25″ 12-Bolt Axle |
| 2000–2005 | Ford | Excursion | Sterling 10.25″ 12-Bolt Axle |
Why Choose ATS Diesel?
- Trusted leader in high-performance diesel truck components since 2006
- Premium materials tested for extreme towing and heavy-duty use
- Engineered in the USA for exact fitment and long-term reliability
- Proven performance in demanding real-world applications
Frequently Asked Questions
- Q: Will this cover fit my 2002 F-350 Super Duty?
- A: Yes, it fits 1999–2003 F-250 and F-350 Super Duty models equipped with the Sterling 10.25″ 12-bolt axle. Please confirm your axle code before purchasing.
- Q: What material is the cover made from?
- A: High-strength cast aluminum with a wrinkle black powder coat finish for excellent corrosion resistance and heat dissipation.
- Q: How much extra gear oil does it hold?
- A: It holds approximately 2.5 quarts more than the factory cover.
- Q: Is installation difficult?
- A: No. It bolts directly to the factory locations using the stock bolt pattern and typically takes 1–2 hours with basic tools.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Secure foam-lined box (19″ x 14″ x 6″)
- Weight: 14.5 lbs (product) / 18 lbs (shipping)
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