Design Changes to Master Cylinder and Brake Booster – 2012-2015 Subaru

NUMBER: 06-50-15
DATE: 08/10/15

 

APPLICABILITY:	2014-15MYForester Models
	2012-15MY Impreza and XV Crosstrek Models (EXCEPT Hybrid)
SUBJECT:	Design Changes to Master Cylinder and Brake Booster

 

INTRODUCTION

This bulletin informs of a parts change to the brake system Master Cylinder and Vacuum Booster.  Whenever replacement of either of these components is required, the identification procedure provided below must be followed to insure the proper parts are ordered and installed as a set.

 

PRODUCTION CHANGE INFORMATION:

The new master cylinder and vacuum booster were incorporated into production as per the table below.  There are 3 columns of VIN information in the table below.  To clarify:

• Before Change: “Old” parts only were used in production.
• Transition Period: “Old” parts (combination of old master cylinder and old vacuum booster) or “New” parts (combination of new master cylinder and new vacuum booster) may have been used in production.  (New and old parts were never and cannot be combined.)
• After Change: “New” parts only were used in production.

MODEL	SEDAN / WAGON	STARTING VIN BEFORE CHANGE	TRANSITION PERIOD VIN RANGE	STARTING VIN AFTER CHANGE
Impreza / XV Crosstrek (except hybrid)	4-Door	F*009362	F*009363 to F*009379	F*009380
	5-Door	F*234518	F*234519 to F*235315	F*235316
Forester	All	F*574366	F*574367 to F*575794	F*575795

 

PART INFORMATION

Master Cylinder Assembly

NEW PART NUMBER	TRANSMISSION	MODEL APPLICABILITY	OLD PART NUMBER
26401FJ120	M/T	All	26401FJ061
26401FJ130	CVT		26401FJ071

 

Vacuum Booster Assembly

NEW PART NUMBER	VACUUM SENSOR	MODEL APPLICABILITY	OLD PART NUMBER
26402FJ110	WITHOUT	All	26402FJ010
26402FJ130	WITH		26402FJ030

 

IMPORTANT NOTES:

• “New” and “Old” part number parts are NOT interchangeable and must never be used in combination.
• A “new” part number Master Cylinder assembly MUST ONLY be used with a “new” part number Vacuum Booster assembly.
• An “old” part number Master Cylinder assembly MUST ONLY be used with an “old” part number Vacuum Booster assembly.
• The “old” part numbers WILL NOT supersede to the “new” part numbers.

SERVICE PROCEDURE / INFORMATION

CAREFULLY inspect the 5 digit ID located on the front of the Master Cylinder to determine if it is a “new” or “old” part.  If the ID is: FJ120 or FJ130, it is a “new” part.

If there is a white dot paint marking on the Vacuum Booster, it is a “new” part.

NOTE:  It is especially important to verify the ID of both parts on vehicles with VINs found to be within the Transition Period.  Whenever unable to positively identify either component, replace BOTH as a set using the “new” part number parts.

Follow the Service procedure in the applicable Service Manual for replacement of the Master Cylinder and Vacuum Booster assemblies.

 

WARRANTY / CLAIM INFORMATION

For vehicles within the Basic New Car Limited Warranty period or with an active Added Security Classic or Gold Service Agreement, this repair may be claimed using the following information:

MODEL	LABOR DESCRIPTION	LABOR OPERATION #	FAIL CODE	LABOR TIME
Forester, Impreza and XV Crosstrek	MASTER CYLINDER AND BOOSTER REPLACEMENT FOR PEDAL TRAVEL	A533-291	QBB-43	2.8
Forester Turbo				3.0

 

REMINDER:  SOA strongly discourages the printing and/or local storage of service information as previously released information and electronic publications may be updated at any time.

Always refer to STIS for the latest service information before performing any repairs.

 

 

 

Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API

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Last update on 2026-06-17 / Affiliate links / Images from Amazon Product Advertising API

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