??Material??For John Deere Servicegard Rear Main Seal Installer is crafted from quality carbon steel, high strength, anti-wear, rust resistance, anti-oxidation, sturdy and durable. ??Function??This rear oil seal installer tool is used to simultaneously install the Teflon unitized seal and wear sleeve on the engine rear crankshaft flange. ??Custom Design??The driver acts as a pilot to install rear oil seal in the housing eliminating the need for a dial indicator to measure. ??Advantage??Our crankshaft rear seal installer is compatible with John Deere tractors and combines, keeping your equipment running smoothly for a long time. .