TSB: KENWORTH T2000, T800, W900 (2004–2008)

Bulletin TIB-41-12 — October 16, 2008

Bulletin Details

Bulletin IDTIB-41-12
ManufacturerKENWORTH
ModelsT2000, T800, W900
Model Years2004–2008
Date IssuedOctober 16, 2008
Date Added to NHTSAJanuary 28, 2009
ComponentENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
Vehicles Affected34 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

KENWORTH TRUCKS: THE INLET PIPE CONNECTIONS FOR ISX ENGINES. THE KENWORTH AIR INLET PIPE TO THE ISX TURBO MAY BECOME DETACHED. CHASSIS AFFECTED T2000, T800, AND W900. MODEL YEARS UNKNOWN. *PE

Affected Vehicles

MakeModelYearComponent
KENWORTH T2000 2008 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T2000 2008 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH T800 2008 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T800 2008 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH W900 2008 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH W900 2008 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH T2000 2007 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T2000 2007 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH T800 2007 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T800 2007 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH W900 2007 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH W900 2007 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH T2000 2006 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T2000 2006 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH T800 2006 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T800 2006 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH W900 2006 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH W900 2006 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH T2000 2005 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T2000 2005 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH T800 2005 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T800 2005 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH W900 2005 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH W900 2005 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH T2000 2004 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH T2000 2004 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T800 2004 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH T800 2004 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
KENWORTH W900 2004 061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
KENWORTH W900 2004 061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER

Related KENWORTH Recalls

CampaignModelYearComponentSummary
L770 2026 STEERING PACCAR Incorporated (PACCAR) is recalling certain 2026 Kenworth L770 and 2024...
W990 2026 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER... PACCAR Incorporated (PACCAR) is recalling certain 2024-2026 Kenworth T680, T8...
W990 2025 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER... PACCAR Incorporated (PACCAR) is recalling certain 2024-2026 Kenworth T680, T8...
W990 2024 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER... PACCAR Incorporated (PACCAR) is recalling certain 2024-2026 Kenworth T680, T8...
T880 2026 ELECTRICAL SYSTEM: INSTRUMENT CLUSTER... PACCAR Incorporated (PACCAR) is recalling certain 2024-2026 Kenworth T680, T8...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized KENWORTH dealer. Bring this bulletin ID (TIB-41-12) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.