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Weller Truck Parts · Drivetrain
100494-WEL
In stock · ships from Knoxville
This is a differential input (pinion) seal designed to hold gear oil at the front of the carrier where the driveshaft connects to the pinion flange.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It is made of fluoro-elastomer (Viton-class) with a spring-loaded multi-lip design to resist high temperatures and prevent leaks. You replace this seal when gear oil is seeping from the front of the differential, often during pinion bearing or yoke service. The -WEL suffix is a vendor-specific identifier for a part equivalent to the National/Timken 100494 standard seal.
Part Number: 100494-WEL
FRONT INPUT SEAL
Vendor: Weller Truck Parts
Dealer: KP Services Crossville
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