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Meritor · Drivetrain
KIT2638
In stock · ships from Knoxville
This is a genuine Meritor pinion nut and washer kit for heavy-duty drive axles.
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 includes the pinion nut and a hardened washer required to secure the pinion gear in the differential. You would replace these components when servicing the differential, replacing a pinion seal, or if the original nut has loosened or been removed—proper torque and a fresh nut/washer are critical to prevent gear misalignment and driveline failure.
Part Number: KIT2638
DIFF NUT KIT
Vendor: Weller Truck Parts
Dealer: KP Services Crossville
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