Product Overview The Rear Crankshaft Oil Seal LR036542 is a Genuine OE-grade engine sealing component engineered for 3.0L V6 diesel engines (306DT / TDV6 / SDV6) in select for Land Rover vehicles. This component is supplied as a seal and retainer assembly, combining the crankshaft rear main seal with its integrated housing. It mounts at the rear of the crankshaft to seal the interface between the crankshaft and engine block, preventing engine oil leakage into the bell housing