What vehicles does this rear main seal fit?

This seal is designed for a broad range of GM vehicles with specific inline 6, V6, and small block V8 engines. It covers many Chevrolet, Buick, and GMC models produced between 1980 and 1986.

Why is it a two-piece seal?

A two-piece rear main seal is generally easier to install than a one-piece design. It allows for replacement without needing to remove the crankshaft from the engine block, simplifying the repair process.

What is the seal made of?

This rear main seal is made from silicone. Silicone is a durable material known for its resistance to oil and high temperatures, which helps it maintain a seal effectively over time.

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Specifications

Brand: Cometic Gasket
Part #: C5085
UPC: 191070545437

Cometic GM 3.2/3.8/4.1/4.8L Inline 6 3.8/4.3L V6 Chevy Gen1 SB V8 Silicone Rear Main Seal-2 Piece

Name: Cometic GM 3.2/3.8/4.1/4.8L Inline 6 3.8/4.3L V6 Chevy Gen1 SB V8 Silicone Rear Main Seal-2 Piece
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-3-2-3-8-4-1-4-8l-inline-6-3-8-4-3l-v6-chevy-gen1-sb-v8-t14-808514
Price: 22.53 USD
Availability: BackOrder

$22.53

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Cometic GM 2-piece silicone rear main seal. Meets or exceeds OEM quality for a wide range of GM vehicles.

Key Features

Fits 1980-1986 Chevrolet C/K Series trucks, 1980-1986 Chevrolet Camaro, and many other GM vehicles.
This is a two-piece rear main seal kit.
Constructed from silicone for good oil and heat resistance.
Meets or exceeds OEM quality standards.
Designed for GM 3.2/3.8/4.1/4.8L Inline 6, 3.8/4.3L V6, and Chevrolet Gen-1 Small Block V8 engines.

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About this part

Product Details

This product is a two-piece rear main seal kit made from silicone. It's designed to replace the seal found in many GM inline 6-cylinder engines, as well as V6 and small block V8 engines from Chevrolet. This seal is crucial for preventing oil from leaking out of the engine where the crankshaft exits the block.

Cometic builds this seal to meet or exceed original equipment manufacturer quality standards. The silicone material offers good flexibility and resistance to oil and heat, which helps ensure a long service life. Because it's a two-piece design, installation is generally more straightforward than a one-piece seal, as you don't need to remove the crankshaft to replace it.

This seal fits a wide variety of GM vehicles from the early 1980s through the mid-1980s, including popular models like the Chevrolet C/K series trucks and the Chevrolet Camaro.