Rear Inner Wheel Seal for 1986-2013 Isuzu NPR & More - Schaeffler SS3940

Keep dirt, dust and moisture out of the wheel end, and keep the bearing grease in, with the Schaeffler Wheel Seal / Shaft Seal SS3940. This rear inner seal fits many vehicles, among them the 2003-2009 Isuzu NQR, 1986-1987 Chevrolet W4500 Tiltmaster and 1986-2013 Isuzu NPR. See the "Vehicles it fits" section for the full list and engine details.

Schaeffler lists this part as a wheel seal and also as a shaft seal. Its wheel seals use high-quality materials and are built to meet vehicle manufacturer specifications, with suppliers working to Schaeffler's own quality standards. Wheel seal specifications are demanding, and the correct seal depends on the application, position and vehicle class. This seal is cataloged for the rear inner position on the listed trucks.

• Superior Protection: Helps keep contaminants such as dirt, dust and moisture from reaching and damaging wheel end components.
• Grease Retention: Designed to prevent the loss of grease over the life of the bearing.
• OE Expertise: Designed and produced to stringent OEM standards. It is backed by a robust quality-assurance process that accounts for the precise requirements of automotive systems.
• Premium Materials: Chosen so the seal stays durable and keeps protecting the wheel end over time.

Signs that a wheel seal may need replacing include grease seeping from the inner side of the wheel end and grease or grime on nearby brake parts. Diagnose the cause before replacing parts, and follow the vehicle service information for the installation procedure.

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