WenmarOpen by Wenmar Pro

Service bulletin 302-15

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 id10141940
Published by NHTSA2018-06-18
Manufacturer's number302-15
Manufacturer's date2015-03-02
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV); ENGINE

NHTSA's summary

302-15 Crankshaft Oil Seals

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

Engine, Exhaust and emissions, Crankcase ventilation (PCV)

Vehicles listed
FREIGHTLINER 114SD2012, 2013, 2014, 2015, 2016, 2017
FREIGHTLINER 122SD2012 to 2017
FREIGHTLINER BUSINESS CLASS M22012 to 2017
FREIGHTLINER CASCADIA2012, 2013, 2014, 2015, 2016, 2017
FREIGHTLINER COLUMBIA2012, 2013, 2014, 2015, 2016, 2017
FREIGHTLINER CORONADO2012, 2013, 2014, 2015, 2016, 2017
STERLING A-LINE2012 to 2017
WESTERN STAR 47002012, 2013, 2014, 2015, 2016, 2017
WESTERN STAR 49002012, 2013, 2014, 2015, 2016, 2017

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

Other bulletins for the same vehicles and component
0356-17 SPN2018-06-18. Service bulletin. (MCM) (GHG17)
0356-172018-06-18. Service bulletin. (MCM) (GHG17)
0305-172018-06-18. Service bulletin. Diagnostic Tests