GM 9.5" 14-Bolt Fiber Differential Cover Gasket

• Fiber gasket seals GM 9.5" 14-bolt semi-float differential covers

• Direct-fit replacement for worn, torn, or leaking factory gaskets

• Matches 14-bolt cover pattern on 9.5" semi-float rear axles

• Sold individually — install dry or with light RTV per service manual

A worn or torn differential cover gasket is a common source of gear-oil leaks, and this fiber gasket is a direct replacement sized for the GM 9.5" 14-bolt semi-float rear axle. It's built to match the cover bolt pattern and sealing rail of this specific housing for a proper seal.

This gasket does not fit the GM 10.5" 14-bolt differential — a larger, heavier-duty axle that uses a different cover and gasket — despite both sharing the "14-bolt" name. Confirm your axle is the 9.5" version before ordering. As a fiber gasket, it can be installed dry or with a light coat of RTV per your service manual; avoid overtightening cover bolts, since fiber gaskets can crush under excess torque.

Commonly used for differential service, cover replacement, and gasket-only rebuilds on GM/Chevrolet half-ton (C/K1500) trucks and SUVs equipped with the 9.5" 14-bolt semi-float rear axle.

Applications
Fits GM 9.5" 14-bolt semi-float rear differentials, commonly found on GM/Chevrolet half-ton (C/K1500) trucks and SUVs. Used for differential service, cover replacement, and gasket-only rebuilds.

Installation
Confirm your axle is the 9.5" 14-bolt, not the 10.5" 14-bolt, before ordering — the two use different covers and gaskets despite the shared "14-bolt" name. Install dry or with a light coat of RTV per your service manual; do not overtighten cover bolts, as fiber gaskets can crush. Drain and refill gear oil after installation, and verify correct fill level and plug location for your specific cover.

Does this gasket fit any 14-bolt differential?
No. This gasket is designed specifically for the GM 9.5-inch 14-bolt semi-floating rear axle. It is not compatible with the GM 10.5-inch 14-bolt full-floating differential, which uses a different cover and gasket.

How do I know if my differential is the 9.5" or 10.5" version?
The 10.5-inch axle is larger and heavier-duty than the 9.5-inch semi-floating axle. Check your service manual or measure the ring gear diameter to verify which differential you have before ordering.

Do I need RTV sealant, or can I install this gasket dry?
This fiber gasket can be installed either dry or with a light coat of RTV sealant, depending on your vehicle manufacturer's service recommendations.

Can I overtighten the cover bolts to get a better seal?
No. Overtightening can crush the fiber gasket, potentially causing leaks instead of preventing them. Always tighten the cover bolts to the manufacturer's recommended torque specification.

What vehicles commonly use this differential?
The GM 9.5-inch 14-bolt semi-floating rear axle is commonly found in Chevrolet and GMC half-ton (C/K1500) trucks and SUVs.

Do I need to drain and refill gear oil after installing this gasket?
Yes. Drain the differential before removing the cover, then refill it with the