What is a rear main seal and why is it important?

The rear main seal is located at the back of the engine, between the engine block and the transmission. Its job is to prevent engine oil from leaking out of the crankshaft opening. A failing seal can lead to significant oil loss and potential engine damage.

Does this kit include everything needed to replace the rear main seal?

This kit specifically includes the one-piece rear main seal. Depending on your specific vehicle and the condition of other components, you may also need to replace the rear main bearing cap seal, crankshaft pilot bearing, or oil pan gasket during this job.

What makes this seal meet or exceed OEM quality?

Cometic manufactures these seals using carefully selected materials that are suited for all types of operating environments. This ensures the seal performs reliably and lasts, matching or surpassing the original equipment's performance.

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Specifications

Brand: Cometic Gasket
Part #: C5106
UPC: 191070121631

Cometic Chevrolet Gen-1 90 Degree V6 - Gen-1/2 Small Block V8 Rear Main Seal Kit - 1 Piece

Name: Cometic Chevrolet Gen-1 90 Degree V6 - Gen-1/2 Small Block V8 Rear Main Seal Kit - 1 Piece
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevrolet-gen-1-90-degree-v6-gen-1-2-small-block-v8-rear--t14-808516
Price: 36.20 USD
Availability: BackOrder

$36.20

On Backorder

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

Cometic Rear Main Seal Kit for GM Gen 1 Small Block V8 engines. Meets or exceeds OEM quality.

Key Features

Fits GM Gen 1 Small Block V8 and Gen 1 90-degree V6 engines.
Meets or exceeds OEM quality standards.
Designed for a one-piece rear main seal application.
Manufactured from high-quality materials for durability.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will it fit your car?

About this part

Product Details

If you're rebuilding the rear of your engine, replacing the rear main seal is a critical step to prevent oil leaks. This one-piece rear main seal kit from Cometic is designed for Chevrolet Gen-1 90-degree V6 and Gen-1/2 Small Block V8 engines, covering a wide range of GM vehicles from the early 80s through the mid-90s.

Cometic builds these seals using the best materials available, ensuring they can handle various operating conditions. The goal is to meet or even exceed the original equipment manufacturer's quality, so you can be confident in its performance and longevity. This kit is a straightforward replacement for your old, worn-out seal, helping to keep your engine oil where it belongs.