ATS Diesel ATS Diesel Ford Sterling 12-Bolt 10.25in Ring Gear Diff Cover
ATS Diesel ATS Diesel Ford Sterling 12-Bolt 10.25in Ring Gear Diff Cover
ATS Diesel ATS Diesel Ford Sterling 12-Bolt 10.25in Ring Gear Diff Cover
ATS Diesel ATS Diesel Ford Sterling 12-Bolt 10.25in Ring Gear Diff Cover
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ATS Diesel Ford Sterling 12-Bolt 10.25in Ring Gear Diff Cover

ATS Diesel
ATS402-900-3068
4029003068
Diff Covers
20+ Units In Stock - Ships Next Business Day
$ 289.99
$ 289.99

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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