Moser Engineering Differential Cover

Moser Engineering Differential Covers: American-Made Protection for Your Rear End

Moser Engineering has been one of the most respected names in performance drivetrain components since the company's founding. Established in 1982, Moser Engineering was founded by Greg Moser, a racer who resplined a pair of axles — an act that launched an entire business and ultimately grew into a full-line manufacturer of rear-end components trusted by racers and enthusiasts alike. While the brand is celebrated across the entire drivetrain spectrum, its differential covers are a standout product line that reflects the same engineering philosophy found throughout every Moser component.

Why Moser Differential Covers Stand Apart

Moser Engineering performance aluminum differential covers are made of 356 T6 aluminum and are designed to improve ring and pinion gear life, as well as the appearance of your vehicle. This specific alloy choice is no accident — 356 T6 aluminum strikes a balance between light weight and structural integrity, making it a go-to material for high-stress performance applications. Moser aluminum differential covers minimize gear deflection so gears last longer — a critical advantage for anyone pushing their drivetrain under track conditions or heavy towing loads.

Moser covers are made from high-quality materials such as aluminum or steel, which are designed to withstand the most extreme conditions, and feature a thick wall construction, providing added protection against impacts and other hazards. The result is a cover that does far more than seal in gear oil — it actively contributes to the longevity and reliability of your differential assembly.

Coverage Across Popular Rear End Platforms

Moser's differential cover lineup is engineered to serve the most popular American rear end platforms. Their 12-bolt cover is designed for GM 12-bolt rear differentials and features cooling fins and a thick wall construction for maximum protection and cooling efficiency. The Moser 8.8 differential cover is designed for Ford 8.8 rear differentials. Their 9-inch differential cover is designed for Ford 9-inch rear differentials and comes with cooling fins and thick wall construction, providing maximum protection and cooling efficiency. Additionally, covers for the GM 10-bolt (8.2/8.5 in.) and 8.875 in. 12-bolt truck rear ends round out the range, ensuring broad compatibility across classic muscle cars, modern performance vehicles, and trucks.

The Moser Engineering Difference

Since 1982, Moser Engineering has been manufacturing products built with advanced machining processes and premium materials. Located in Portland, Indiana, the company prides itself on supplying quality American-made products at an affordable price, with an industry-leading two-day turnaround. When you choose a Moser differential cover, you're not just buying a stamped-steel cap — you're investing in a precision-machined component from a manufacturer whose entire identity is built around rear-end performance. Browse the full selection of differential covers or explore everything Moser Engineering has to offer across their complete drivetrain catalog.