Dana 80 10-Bolt Fiber Differential Cover Gasket

This is a fiber differential cover gasket sized and punched for Dana 80 rear axle housings with a 10-bolt cover pattern. It's a direct replacement for a leaking, damaged, or missing cover gasket on compatible Dana 80 axle applications, providing a reliable fiber seal between the differential cover and the axle housing sealing rail during cover reinstallation, fluid changes, or cover upgrades.

The Dana 80 uses a 10-bolt cover pattern with a 12-bolt ring gear — both specs should be confirmed against your axle before ordering, since the cover bolt count and ring gear bolt count differ and are often referenced independently when cross-shopping gaskets. This axle is commonly found in Ford F-350, F-450, F-Super Duty, Dodge Ram 2500, and Ram 3500 heavy-duty truck applications.

This gasket is sold individually and includes no hardware, cover, or drain plug. Confirm your axle model, cover bolt pattern, and sealing surface condition before installation.

Fiber Gasket Cut for the Dana 80's 10-Bolt Cover Pattern
This fiber differential cover gasket is punched to match the 10-bolt cover pattern used on Dana 80 rear axle housings, giving you a clean, leak-resistant seal between the differential cover and the axle housing sealing rail during cover reinstallation or replacement.

10-Bolt Cover, 12-Bolt Ring Gear
The Dana 80 is unique in that it uses a 10-bolt cover pattern alongside a 12-bolt ring gear — the two counts differ, which can cause confusion when cross-referencing specs. This gasket is built to the Dana 80's 10-bolt cover pattern specifically. A worn, crushed, or damaged cover gasket is one of the most common causes of gear oil seepage at the rear axle on heavy-duty truck applications — this fiber gasket helps restore a consistent seal.