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Cometic C5681 Rear Main Seal for Chevy Small Block V8 Gen I

(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 + 166 more models)

Part of: Cometic Rear Main Seal for Chevrolet Small Block

Other options in this family: Cometic C5683 Cometic C5682 Cometic C5689 Cometic C5385 Cometic C4770

Manufacturer

Picture for manufacturer Cometic

Part Number

C5681
4 reviews
Sale Price

$26.64

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Cometic C5681 is a precision-engineered rear main seal designed specifically for first-generation Chevrolet small block V8 engines produced from 1955 to 1985. This critical seal prevents oil leakage between the crankshaft and engine block at the rear of the engine, ensuring proper lubrication system integrity.

Key Features:

  • Direct fit for Gen I Chevy small block V8 engines (265, 283, 302, 305, 307, 327, 350, 400 cubic inch applications)
  • Manufactured by Cometic Gaskets using premium sealing materials for reliable leak prevention
  • Designed to withstand high crankshaft speeds and extreme temperature cycling
  • Replaces worn or damaged original rear main seals during engine rebuilds or leak repairs
  • Precision-cut dimensions ensure proper fitment and sealing performance

This rear main seal is an essential component for any Gen I small block Chevrolet engine rebuild or maintenance procedure. Cometic's reputation for quality gaskets and seals makes this an excellent choice for both professional mechanics and DIY enthusiasts working on classic Chevy 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 + 162 more models

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

Fast shipping, great product. Nothing more needs to be said.

Ok so far no problem cheapest price online iufhjoj bjgxbjob

Autoplicity was quick and easy. Painless web format. Shiped right away. And reasonably priced too.

Great communication, Great prices! They beat all the competitors hands down on price for my cold air intake order #18986. Quick shipping and they are now in my favorites for places to look for automobile needs. The only thing I would like to see them change is the speed of their website.

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