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.
Neapco · Drivetrain
4-0674
In stock · ships from Knoxville
The Neapco 4-0674 is a heavy-duty universal joint for the 1610 half-round driveline series.
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.
Universal fit
Fits any vehicle or equipment using a 1610 half-round driveline; commonly found in heavy-duty trucks, agricultural, and industrial machinery [sellingtruckparts.com](https://www.sellingtruckparts.com/product/neapco-4-0674-u-joint-1610-series-half-round/).
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 8 of 8.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It allows angular movement between driveshaft components, transmitting power while compensating for suspension flex. You typically replace it when you notice driveline vibration, clunking, or excessive play in the joint, which can lead to driveshaft failure. This U-joint is greaseable, with two zerk fittings in the cross for regular maintenance [neapcoparts.com](https://neapcoparts.com/4-0674-universal-joint/).
Part Number: 4-0674
1610 1/2 RD U-JOINT
Category: Driveline
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
