MAHLE Original Cummins B/ ISB/ ISBe/ QSB Engine Rear Main Seal

This rear main seal is made from a durable, oil-resistant material, specifically chosen to handle the pressures and temperatures found at the back of your Cummins B, ISB, ISBe, or QSB engine. It's designed to create a tight seal around the crankshaft, preventing oil from leaking out of the engine block and onto your transmission or the ground. A leaking rear main seal can lead to significant oil loss and create a mess, so replacing it is key to keeping your engine healthy and clean.

Victor Reinz, a well-known name in engine sealing, builds these seals to fit right and perform reliably. This particular seal is a solid option for many Dodge and Ram trucks from the late 80s through the late 2010s, covering a wide range of applications. When you're tackling a job that requires dropping the transmission, like a clutch replacement or a transmission rebuild, it's the perfect time to replace this seal to avoid future leaks.