Rear Main Seals

A blown rear main seal is a brutal leak hiding right between your engine and transmission, turning every stop into a puddle of expensive oil. Whether you need a reliable OEM replacement to clean up your daily driver or a heavy-duty, high-temp seal to handle the extreme rear-crankshaft abuse of a massive diesel, trail rig, or high-horsepower monster, we’ve got the exact hardware to lock down the back of the block. Built for cars, heavy-hauling trucks, and rowdy powersports rigs, our premium rear main seals deliver professional-grade protection against the toughest crankcase leaks on the map. Pull the transmission, press out the old crusty ring, and let the big dog eat.