A-13H3009-AI MAIN SEAL, REAR model-R42 Replaces Part Number: 309523

Replaces Part Number: 309523

Application: Top-end cylinder and piston assembly

9-904-105535

One New Aftermarket Replacement Selective Sector Gear Kit

A-13H3009-AI MAIN SEAL, REAR model-R42 Replaces Part Number: 309523One New Aftermarket Replacement Rear Main Crankshaft Seal for Leyland, Nuffield, and Marshall Tractors This annular grooved rear crankshaft seal (main seal, rear) prevents engine oil from leaking around the crankshaft at the rear of the engine block. It fits all Leyland tractors equipped with a BMC engine and all Marshall tractors equipped with a Leyland engine, covering a wide range of British agricultural tractor models. Compatible Engines BMC 2.