The Doosan 218000857 is a genuine OEM crankshaft rear oil seal designed for a wide range of Doosan heavy machinery, including excavators, wheel loaders, and articulated dump trucks. This critical engine component ensures a tight seal, preventing oil leaks from the rear of the crankshaft. With an outer diameter of 120 mm, an inner diameter of 95 mm, and a height of 12 mm, this precision-engineered seal maintains optimal engine performance and reliability. Weighing 0.12 kg, it is manufactured to Doosan's stringent quality standards for durability and perfect fitment.