Cometic 01-07 GM 6.6L Duramax Rear Main Seal

This is the rear main seal from Cometic Gasket, designed for GM trucks equipped with the 6.6L Duramax diesel engine. Specifically, it fits models from 2001 through 2018, covering a wide range of Chevrolet and GMC pickups and vans. The rear main seal is a critical component that sits between the engine block and the transmission, preventing oil from leaking out of the crankshaft's rear main bearing.

Cometic is known for using quality materials and manufacturing processes to ensure their gaskets and seals meet or exceed original equipment standards. This seal is built to perform reliably in the demanding environment of a diesel engine, helping to keep your engine properly lubricated and preventing oil loss that could lead to serious damage. When you're tackling a rear main seal replacement, using a well-made seal like this one from Cometic is important for a lasting repair.

Replacing a rear main seal is a significant job that typically involves removing the transmission and sometimes the flywheel or flexplate. Ensure you have the necessary tools and follow the manufacturer's instructions for a successful installation.