GM 8.875" 12-Bolt "Car Style" Fiber Differential Cover Gasket
GM 8.875" 12-Bolt "Car Style" Fiber Differential Cover Gasket
SKU: SKU: SP4930
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 8.875" "car style" 12-bolt axles — Camaro, Chevelle, Nova
- Not the same as the "truck style" 12-bolt — confirm your axle type
Description
This fiber differential cover gasket is sized and punched for the GM 8.875" "car style" 12-bolt rear axle housing. 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.
GM used two different 12-bolt differential cover designs on 8.875" axles — a "car style" and a "truck style" — and the two are not interchangeable. This gasket is cut for the car-style cover, commonly found on Chevrolet Camaro, Chevelle, and Nova. If your application is a C10/K10/Silverado truck, TSP's "truck style" 12-bolt gasket (SKU SP4932) is the correct part instead.
This gasket is sold individually and includes no cover, hardware, or drain plug. Confirm your axle model and cover style before ordering.
Applications
Fits GM 8.875" "car style" 12-bolt rear axle housings. Common applications include Chevrolet Camaro, Chevelle, and Nova (1965-1972), and Pontiac Firebird.
Installation
Sold individually — no cover, hardware, or drain plug included. Verify you have the car-style cover, not the truck-style cover, before ordering — see SKU SP4932 for the truck-style version. Confirm gasket or RTV sealing requirements and fluid fill level.
Specs
| Style | 12-Bolt |
| Material | Fiber |
| Quantity | Sold Individually |
Engine Fitment
COMPATIBLE WITH
GM 8.875" 12-BOLT "CAR STYLE" DIFFERENTIAL COVER APPLICATIONS
• Fits GM 8.875" car-style rear axle housings using the factory 12-bolt cover pattern
• Not interchangeable with the GM 8.875" truck-style 12-bolt cover — verify your specific axle casting before ordering
• Match cover shape, sealing rail, and fill/drain configuration before installation
NOTES
• "Car style" and "truck style" 12-bolt covers are not interchangeable despite sharing the same bolt count and nominal ring gear size — confirm which style your vehicle uses before ordering
• Verify axle model, bolt pattern, ring gear size, and housing shape before installation
• Confirm gasket or RTV sealing requirements and fluid fill level
• Not compatible with Corvette (independent rear suspension) or GTO (Pontiac BOP/7.75" axle)
COMMON VEHICLE APPLICATIONS
Chevrolet Camaro (1967–1972, big-block/high-performance applications)
Chevrolet Chevelle / Malibu (1965–1972, big-block/SS applications)
Chevrolet Nova (1968–1972, big-block applications)
Pontiac Firebird (1967–1972, big-block/high-performance applications)
Q&A
What's the difference between this and the other GM 8.875" 12-bolt gasket?
GM used two different 12-bolt cover designs on the 8.875" axle — "car style" and "truck style." This gasket fits the car-style cover (Camaro, Chevelle, Nova, Firebird). TSP's other 12-bolt gasket (SKU SP4932) fits the truck-style cover (C10/K10/Silverado) instead. The two are not interchangeable.
Will this fit my C10 or Silverado?
No — this is the car-style cover gasket. For C10/K10/Silverado trucks, see TSP's truck-style 12-bolt gasket (SKU SP4932).
Does this come with the cover or hardware?
No — sold individually. Cover, hardware, and drain plug are not included.
What's this gasket made of?
Fiber.
Emissions Notice
This product does not affect vehicle emissions and is not subject to emissions compliance regulations.
GM 8.875" 12-Bolt "Car Style" Fiber Differential Cover Gasket
This fiber differential cover gasket is sized and punched for the GM 8.875" "car style" 12-bolt rear axle housing. 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.
GM used two different 12-bolt differential cover designs on 8.875" axles — a "car style" and a "truck style" — and the two are not interchangeable. This gasket is cut for the car-style cover, commonly found on Chevrolet Camaro, Chevelle, and Nova. If your application is a C10/K10/Silverado truck, TSP's "truck style" 12-bolt gasket (SKU SP4932) is the correct part instead.
This gasket is sold individually and includes no cover, hardware, or drain plug. Confirm your axle model and cover style before ordering.
Applications
Fits GM 8.875" "car style" 12-bolt rear axle housings. Common applications include Chevrolet Camaro, Chevelle, and Nova (1965-1972), and Pontiac Firebird.
Installation
Sold individually — no cover, hardware, or drain plug included. Verify you have the car-style cover, not the truck-style cover, before ordering — see SKU SP4932 for the truck-style version. Confirm gasket or RTV sealing requirements and fluid fill level.
COMPATIBLE WITH
GM 8.875" 12-BOLT "CAR STYLE" DIFFERENTIAL COVER APPLICATIONS
• Fits GM 8.875" car-style rear axle housings using the factory 12-bolt cover pattern
• Not interchangeable with the GM 8.875" truck-style 12-bolt cover — verify your specific axle casting before ordering
• Match cover shape, sealing rail, and fill/drain configuration before installation
NOTES
• "Car style" and "truck style" 12-bolt covers are not interchangeable despite sharing the same bolt count and nominal ring gear size — confirm which style your vehicle uses before ordering
• Verify axle model, bolt pattern, ring gear size, and housing shape before installation
• Confirm gasket or RTV sealing requirements and fluid fill level
• Not compatible with Corvette (independent rear suspension) or GTO (Pontiac BOP/7.75" axle)
COMMON VEHICLE APPLICATIONS
Chevrolet Camaro (1967–1972, big-block/high-performance applications)
Chevrolet Chevelle / Malibu (1965–1972, big-block/SS applications)
Chevrolet Nova (1968–1972, big-block applications)
Pontiac Firebird (1967–1972, big-block/high-performance applications)
SPECIFICATIONS
Style: 12-Bolt
Material: Fiber
Quantity: Sold Individually
