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Service bulletin MC - THE WRENCH

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 id10099957
Published by NHTSA2017-05-22
Manufacturer's numberMC - THE WRENCH
Manufacturer's date2015-12-10
NHTSA componentEQUIPMENT; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

NHTSA's summary

NEWSLETTER - THE REPAIR PROCEDURE FOR THE SECONDARY MASTER CYLINDER (SMC) RECALL IS VERY INVOLVED, SO MAKE SURE TO READ THROUGH THE ENTIRE BULLETIN BEFORE HAND SO YOU CAN VISUALIZE THE PROCEDURES BEFORE YOU START. NOT ONLY WILL YOU BE INSTALLING AN UPDATED SMC AND A NEW REAR MASTER CYLINDER, BUT IT IS IMPORTANT TO CAREFULLY FOLLOW EACH STEP IN EXACT ORDER SO THAT THE PEDAL BRAKE LINE IS COMPLETELY FLUSHED OF ANY CONTAMINANTS.

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, Equipment and accessories, Brake master cylinder

Vehicles listed
HONDA GL18002001 to 2015
HONDA GL1800A2001 to 2015
HONDA GL1800B2013 to 2015

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