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Cometic C5085 Rear Main Seal for GM Inline 6 and Small Block V8

(GMC G2500 1979-86, K1500 1979-86, C1500 1979-86, K2500 1979-86, Jimmy 1970-86, C3500 1979-86, K2500 Suburban 1979-86, K3500 1979-86 + 162 more models)

Part of: Cometic Rear Main Seal for Chevrolet Small Block

Other options in this family: Cometic C5681 Cometic C5683 Cometic C5682 Cometic C5689 Cometic C5385

Manufacturer

Picture for manufacturer Cometic

Part Number

C5085
5 reviews
Sale Price

$13.60

Estimated ship date Monday, November 23

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Fitment guaranteed

Fitment guaranteed

Product Details

The Cometic C5085 is a high-quality silicone rear main seal designed for a wide range of GM engines. This 2-piece seal provides reliable crankshaft sealing for GM 3.2L, 3.8L, 4.1L, and 4.8L inline 6-cylinder engines, 3.8L and 4.3L V6 engines, and Chevrolet Generation-1 small block V8 engines.

Key Features:

  • Premium silicone construction for superior sealing and durability
  • 2-piece design for easier installation without removing the crankshaft
  • Direct replacement for worn or leaking OEM rear main seals
  • Compatible with multiple GM inline 6, V6, and small block V8 applications
  • Manufactured by Cometic Gasket, a trusted name in high-performance sealing solutions

This rear main seal is an essential component for preventing oil leaks at the back of the engine block where the crankshaft exits. The silicone material provides excellent resistance to heat, oil, and engine chemicals while maintaining flexibility over time. Ideal for engine rebuilds, restorations, or addressing oil leak issues on classic GM powerplants.

Products specifications

Fits

GMC G2500 1979-86, K1500 1979-86, C1500 1979-86, K2500 1979-86, Jimmy 1970-86, C3500 1979-86, K2500 Suburban 1979-86, K3500 1979-86, C15/C1500 Pickup 1967-74, C2500 1979-86, K1500 Suburban 1979-86, G25/G2500 Van 1967-74 + 158 more models

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Fantastic experience. Received my radiator very quickly and the packaging was done very well. The radiator showed up in pristine condition with no flaws. The website was easy to navigate and well put together. Great price, great product, will definitely refer business.

Great customer service

Quick and easy and fast delivery

It was easy and to the point, thanks

well designed site. intuitive.

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