MAHLE Original Chevrolet Blazer 91-87 Rear Main Seal Set

If you're rebuilding the engine in your 1982-1991 Chevrolet or GMC truck or SUV, a new rear main seal is a critical part of the job. This seal sits at the back of the crankshaft, where it exits the engine block, and its main purpose is to keep oil from leaking out onto your transmission and the garage floor. A failing rear main seal is one of the most common sources of persistent oil leaks on these vehicles.

This rear main seal set from Victor Reinz is a well-built replacement designed to fit a wide range of Chevrolet and GMC C/K series trucks, Suburbans, and vans from the mid-80s to the early 90s. It's made from durable materials that can withstand the heat and pressure of the engine environment, ensuring a long-lasting seal. Installing a new rear main seal is typically done when the transmission is out of the vehicle, making it a good time to replace this often-leaking component.