WenmarOpen by Wenmar Pro

Service bulletin SIL-16-WT-20

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 id10244262
Published by NHTSA2023-10-23
Manufacturer's numberSIL-16-WT-20
Manufacturer's date2023-09-06
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Service letter providing notice of redesigned piston seals and piston, air solenoid valve nipple, and air solenoid valve fitting

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

Vehicles listed
ALLISON DIV ALLISON DIV

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