Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Dana/Spicer · Brakes & Wheel End
D4K
In stock · ships from Knoxville
The D4K is a screw-on dust cap kit for the slip yoke end of a heavy-duty truck driveshaft.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Despite being listed under Brakes & Wheel End by the seller, this is a driveline component for driveshaft slip yokes. Fits many heavy-duty trucks and trailers using Spicer 1550 series driveline components. Always verify stub shaft diameter (1.75") and spline count (16) before ordering.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It seals the splined stub shaft, preventing dirt, water, and road grime from entering and causing wear or corrosion. The kit includes a threaded metal cap, a cork seal, and a retaining washer. It is typically replaced when the original cap is damaged, lost, or during a driveline overhaul to keep the slip joint properly lubricated and protected.
Part Number: D4K
DUST CAP
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
