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 · Drivetrain
3-40-1621
In stock · ships from Knoxville
This is a splined stub shaft designed to be welded into a 3.50-inch diameter, 0.083-inch wall steel driveshaft tube.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Fits a wide range of medium and heavy-duty trucks, including dump trucks, semis, and vocational vehicles that use a two-piece driveshaft with 3.50-inch tubing.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 6 of 6.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It forms the male end of a slip joint assembly, allowing the driveshaft to change length as the suspension moves. When the splines become worn or damaged, driveline vibration and premature component failure can occur, so the shaft is replaced to restore smooth power transfer.
Part Number: 3-40-1621
7 3/8 X 1 1/2 X 16 TUBE SHAFT
Category: Driveline
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
