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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.
| 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 |
| 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 |
ATS Diesel Performance is a family-owned manufacturer specializing in heavy-duty upgrades for diesel-powered pickup trucks. Every component is designed, engineered, and built in-house to handle the demands of towing, hauling, and high-horsepower builds on Cummins, Duramax, and Powerstroke platforms.Popular UpgradesATS transmission upgrade kits are a top choice for owners who tow heavy loads or run modified engines that exceed stock transmission limits. Their exhaust manifolds improve exhaust flow and turbo spool for stronger mid-range power, while the turbocharger lineup covers both drop-in replacements and compound twin-turbo setups. Advanced electronics including boost controllers and transmission monitoring systems help keep your build reliable under load.Will ATS Diesel parts void my truck's warranty?ATS builds components to OEM-or-better standards, but adding any aftermarket performance part can affect warranty coverage depending on your dealership and specific claim. The Magnu...
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