Crankshaft pulley sand seal. This is a machine into case seal
Sand seal pulleys are designed for off road use as the oil screw of a normal pulley can pull dust and grit into the engine. Supplied with a press in sand seal that requires no machining to fit and simply slips in. Machine in seals are suitable for crankcases that have an oversize pulley bore due to wear or damage.
Only for use on EMPI sand seal pulleys.
I/D 1.725 inch
O/D 2.26 inch