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Service bulletin 13-25

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10025870
Published by NHTSA2008-09-12
Manufacturer's number13-25
Manufacturer's date2008-06-25
NHTSA componentSERVICE BRAKES, AIR:SUPPLY:QUICK RELEASE VALVE; SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE

NHTSA's summary

KENWORTH: T300 CHECK VALVE CAMPAIGN: CHASSIS IDENTIFIED MAY HAVE BEEN BUILT WITH AN AIR SYSTEM SINGLE CHECK VALVE RATHER THAN A SINGLE CHECK PRESSURE REDUCTION (SCPR) VALVE. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Brakes

Vehicles listed
KENWORTH T3002007, 2008

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
08V0020002008-01-08. SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS
20080012008-01-07. Brakes
07V0730002007-03-02. SERVICE BRAKES, AIR

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.