Service bulletin SF641
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10203752 |
| Published by NHTSA | 2021-12-02 |
| Manufacturer's number | SF641 |
| Manufacturer's date | 2021-11-01 |
| NHTSA component | POWER TRAIN |
NHTSA's summary
Field Service Campaign for Western Star 49X Transmission Cooler Plumbing. Due to normal vibrations combined with inadequate support, the quick-connect fittings on the transmission oil cooler lines may experience excessive wear, leading to a transmission oil leak; if not addressed, this could lead to transmission damage.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Transmission and driveline
| WESTERN STAR 49X | 2021 to 2022 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.