2006 Kenworth T600, 2006 Kenworth T800, 2006 Kenworth W900 Recall: ON CERTAIN TRUCKS, AN RA529 KING PIN RELEASE AIR VALVE WAS MANUFACTURED…
NHTSA campaign 06V461000 · Trailer Hitches · filed Nov 30, 2006 · verified Jul 30, 2026
The defect
ON CERTAIN TRUCKS, AN RA529 KING PIN RELEASE AIR VALVE WAS MANUFACTURED WITH THE INTERNAL SPOOL INSTALLED BACKWARDS. THIS RESULTS IN THE AIR OPTION OF THE KING PIN RELEASE SYSTEM BEING INOPERABLE. TO CORRECT THIS SITUATION, THE VEHICLE'S AIR LINES WERE REVERSED RATHER THAN REPLACING THE VALVE.
The risk
WITH THE LINES REVERSED, THE KING PIN CAN BE RELEASED WITHOUT THE DRIVER'S KNOWLEDGE. WHEN THIS OCCURS, THE DRIVER COULD DRIVE AWAY AND THE TRAILER COULD BECOME DISENGAGED, INCREASING THE RISK OF 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
KENWORTH WILL INSPECT THE KING PIN RELEASE SYSTEM AND SUSPECT VALVE. IF ANY VEHICLES HAVE A NONCONFORMING VALVE OR INCORRECT PLUMBING, IT WILL BE REPLACED AND RE-PLUMBED. THE RECALL BEGAN ON NOVEMBER 29, 2006. OWNERS MAY CONTACT KENWORTH AT 1-425-828-5440.
KENWORTH RECALL NO. 06KW3.CUSTOMERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO HTTP://WWW.SAFERCAR.GOV.
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 06V461000 (manufacturer number 06KW3). Data last verified Jul 30, 2026.