GM 8.5" 10-Bolt Fiber Differential Cover Gasket
GM 8.5" 10-Bolt Fiber Differential Cover Gasket
SKU: SKU: SP4931
Low stock
Product Details
Features
- Fiber gasket seals the differential cover, prevents gear oil leaks
- Direct replacement for leaking, damaged, or missing cover gaskets
- Fits GM 8.5" rear axles with a 10-bolt cover pattern only
- Not the same as the front 8.5" 10-bolt gasket — confirm front vs. rear
Description
This fiber differential cover gasket is sized and punched for GM 8.5" rear axle housings with a 10-bolt cover pattern. It's a direct replacement for a leaking, damaged, or missing cover gasket, providing a reliable fiber seal between the differential cover and axle housing sealing rail during cover reinstallation, fluid changes, or cover upgrades.
Fiber construction supports a consistent, leak-resistant seal and is the factory-style material for this application. This axle is commonly found across a range of Chevrolet, GMC, and Pontiac rear-wheel-drive applications. This is the rear-axle version specifically — it is not the same as TSP's GM 8.5" 10-Bolt Fiber Front Differential Cover Gasket, used on select 4x4 trucks and SUVs. Confirm your specific axle identification (front vs. rear) before ordering.
This gasket is sold individually and includes no cover, hardware, or drain plug. Confirm your axle model, cover bolt pattern, and sealing surface condition before installation.
Applications
Fits GM 8.5" rear axle housings with a 10-bolt cover pattern. Common applications include Chevrolet Camaro, Chevelle, and Nova, Chevrolet C10/K10/Silverado trucks, and Pontiac Firebird.
Installation
Sold individually — no cover, hardware, or drain plug included. Verify axle identification (front vs. rear) before ordering, since this gasket is not the same as GM's front 8.5" 10-bolt axle gasket. Confirm gasket or RTV sealing requirements and fluid fill level. Check spare tire, sway bar, panhard bar, and suspension clearance where applicable.
Specs
| Style | 10-Bolt |
| Material | Fiber |
| Quantity | Sold Individually |
Engine Fitment
COMPATIBLE WITH
GM 8.5 in. 10-Bolt DIFFERENTIAL COVER APPLICATIONS
• Fits housings using 10-bolt cover pattern
• Match cover shape, sealing rail, and fill/drain configuration before installation
NOTES
• Verify axle model, bolt pattern, ring gear size, and housing shape before installation.
• Confirm gasket or RTV sealing requirements and fluid fill level.
• Check spare tire, sway bar, panhard bar, and suspension clearance where applicable.
COMMON VEHICLE APPLICATIONS
Chevrolet Camaro / Chevelle / Nova
Chevrolet C10 / K10 / Silverado truck applications
Pontiac Firebird
Q&A
Is this for the front or rear axle?
Rear. This gasket is not the same as TSP's GM 8.5" 10-Bolt Fiber Front Differential Cover Gasket, used on select 4x4 trucks and SUVs.
How many bolts does this cover pattern use?
10 bolts.
Does this come with the cover or hardware?
No — this gasket is sold individually. Cover, hardware, and drain plug are not included.
What's this gasket made of?
Fiber.
What vehicles use the GM 8.5" 10-bolt rear axle?
Chevrolet Camaro, Chevelle, and Nova, Chevrolet C10/K10/Silverado trucks, and Pontiac Firebird.
Emissions Notice
This product does not affect vehicle emissions and is not subject to emissions compliance regulations.
GM 8.5" 10-Bolt Fiber Differential Cover Gasket
This fiber differential cover gasket is sized and punched for GM 8.5" rear axle housings with a 10-bolt cover pattern. It's a direct replacement for a leaking, damaged, or missing cover gasket, providing a reliable fiber seal between the differential cover and axle housing sealing rail during cover reinstallation, fluid changes, or cover upgrades.
Fiber construction supports a consistent, leak-resistant seal and is the factory-style material for this application. This axle is commonly found across a range of Chevrolet, GMC, and Pontiac rear-wheel-drive applications. This is the rear-axle version specifically — it is not the same as TSP's GM 8.5" 10-Bolt Fiber Front Differential Cover Gasket, used on select 4x4 trucks and SUVs. Confirm your specific axle identification (front vs. rear) before ordering.
This gasket is sold individually and includes no cover, hardware, or drain plug. Confirm your axle model, cover bolt pattern, and sealing surface condition before installation.
Applications
Fits GM 8.5" rear axle housings with a 10-bolt cover pattern. Common applications include Chevrolet Camaro, Chevelle, and Nova, Chevrolet C10/K10/Silverado trucks, and Pontiac Firebird.
Installation
Sold individually — no cover, hardware, or drain plug included. Verify axle identification (front vs. rear) before ordering, since this gasket is not the same as GM's front 8.5" 10-bolt axle gasket. Confirm gasket or RTV sealing requirements and fluid fill level. Check spare tire, sway bar, panhard bar, and suspension clearance where applicable.
COMPATIBLE WITH
GM 8.5 in. 10-Bolt DIFFERENTIAL COVER APPLICATIONS
• Fits housings using 10-bolt cover pattern
• Match cover shape, sealing rail, and fill/drain configuration before installation
NOTES
• Verify axle model, bolt pattern, ring gear size, and housing shape before installation.
• Confirm gasket or RTV sealing requirements and fluid fill level.
• Check spare tire, sway bar, panhard bar, and suspension clearance where applicable.
COMMON VEHICLE APPLICATIONS
Chevrolet Camaro / Chevelle / Nova
Chevrolet C10 / K10 / Silverado truck applications
Pontiac Firebird
SPECIFICATIONS
Style: 10-Bolt
Material: Fiber
Quantity: Sold Individually
