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.

Spicer/Dana · Drivetrain
6.5-86-38
In stock · ships from Knoxville
This is a dust cap (also called a dust seal) for the slip yoke of a driveshaft.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 6 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Fits Spicer 1810 series slip yokes with 3.000-16 spline and 2.520" neck diameter. Used on many heavy‑duty truck and off‑highway driveshafts equipped with these slip yokes.
Part data verified against 5 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It presses onto the splined end of the slip yoke to keep dirt, water, and debris out of the splined connection, which would otherwise cause premature wear and corrosion. It is used on Spicer 1810 series driveshafts found on many heavy‑duty trucks and commercial vehicles. You replace it when the original cap is damaged, missing, or the seal is leaking, to protect the spline and maintain proper driveline operation.
Part Number: 6.5-86-38
DRIVE SHAFT DUST SEAL
Vendor: DANA
Dealer: KP Services Crossville
Compatibility, alternatives, and more