2004 Kenworth T600, 2004 Kenworth T800, 2004 Kenworth W900 Recall: ON CERTAIN TRUCKS BUILT WITH THE OPTIONAL DANA SPL DRIVELINE, THE U-JOINT…
NHTSA campaign 04V449000 · Power Train · filed Sep 13, 2004 · verified Jul 30, 2026
The defect
ON CERTAIN TRUCKS BUILT WITH THE OPTIONAL DANA SPL DRIVELINE, THE U-JOINT FASTENERS AT THE OUTPUT YOKE OF THE TRANSMISSION WERE NOT PROPERLY TIGHTENED.
The risk
IF THE U-JOINTS WERE TO BECOME LOOSE, A PORTION OF THE DRIVELINE COULD BECOME DETACHED FROM THE VEHICLE AND FALL OUT FROM UNDER THE VEHICLE, WHICH COULD CAUSE A CRASH.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
DEALERS WILL VERIFY THE TORQUE OF THE U-JOINT FASTENERS. PARTS SHOWING EXCESSIVE WEAR WILL BE REPLACED. THE RECALL BEGAN ON NOVEMBER 12, 2004. OWNERS SHOULD CONTACT KENWORTH AT 1-425-828-5440.
KENWORTH RECALL NO.04KW6.CUSTOMERS CAN ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).
Affected vehicles
Related recalls
More Kenworth T600 recalls
- 2017–2019 Kenworth C500 and 12 other models — In certain driving conditions, such as on a long down-hill…
- 2013 Kenworth T400 and 4 other models — Cap screws securing the main driveline to the forward rear…
- 2007–2011 Kenworth C500 and 5 other models — Engine and Engine Cooling
- 2007–2008 Kenworth T2000 and 12 other models — Power Train
- 2004–2009 Kenworth T2000 and 4 other models — Service Brakes, Air
Other campaigns involving Kenworth vehicles
Source: NHTSA recall database, campaign 04V449000 (manufacturer number 04KW6). Data last verified Jul 30, 2026.