WenmarOpen by Wenmar Pro

Service bulletin FSB 262-005

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 id10117376
Published by NHTSA2017-09-14
Manufacturer's numberFSB 262-005
Manufacturer's date2015-02-14
NHTSA componentENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

Coolant Bypass Housing Seal. If a coolant leak at the coolant bypass housing exists on a vehicle equipped with a Mack US07 MP8 engine, a revised housing seal (part number 21298915) having a shorter locating tab and a new coolant bypass housing are available through the parts system.

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, Cooling system

Vehicles listed
MACK MACK

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