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 · Drivetrain
6-4-7771-1X
In stock · ships from Knoxville
This is a splined end yoke assembly for heavy‑duty truck drive shafts.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 7 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Freightliner
International
Peterbilt
Other applications
Freightliner
International
Peterbilt
Other applications
Applications are based on OEM cross‑reference part numbers. Exact truck models and years vary—verify against the vehicle’s driveline specifications.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 44.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It bolts to the differential pinion and connects the driveshaft to the axle through a 1710 series universal joint. The kit includes the yoke, a seal slinger, and bearing straps, making it ready to install. Yokes like this are replaced when splines wear, cracks develop, or during a driveline rebuild to restore proper power transmission.
Part Number: 6-4-7771-1X
END YOKE ASSY
Category: Driveline
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more