2024 Kenworth T800 technical service bulletins

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

• Oct 13, 2026 Service bulletinDue to supplier constraints, an authorized aftermarket surge tank has been made available.
• Sep 11, 2026 Service bulletinKenworth: Dealers should check the chassis list and SIR weekly for VIN changes
• Aug 13, 2026 Service bulletinThe verbiage in the Introduction section has been updated.
• Apr 28, 2026 Service bulletin(KW) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels available for order and installation
• Apr 17, 2026 Service bulletinThe attached procedures document has been updated with more detail and explanations
• Apr 16, 2026 Service bulletinBogie Crossmember Torque Value Update
• Apr 4, 2026 EmissionsEMY21-25 ghg
• Jan 31, 2026 Service bulletinProcedure pictures updated for clarity
• Jan 17, 2025 Service bulletinSafety Recall Parts and procedures are now available
• Dec 17, 2024 Service bulletinPACCAR 20k Steer Axle Steer Arm and Tie Rod Arm Bolt Torque Interim Safety Recall Certain Kenworth model...
• Jun 13, 2024 Service bulletinSafety Recall Certain model year 2024 T800/T880/W900/W990 trucks equipped with Hendrickson COMPOSILITE®...
• Apr 9, 2024 Service bulletinCertain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air...
• Mar 1, 2024 Service bulletinSafety Recall Repair parts and procedures are now available
• Nov 28, 2023 Service bulletinSafety Recall Interim Notification On certain Kenworth model year 2018 through 2024 C500/T660/T800/W900...