BOSCH BOSCH HYDRO-MAX MASTER CYLINDER Recall
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
BOSCH HYDRO-MAX MASTER CYLINDER
Brand
BOSCH
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Robert Bosch LLC is recalling certain BOSCH HYDRO-MAX MASTER CYLINDER equipment due to equipment issues. If the brake system develops an external leak, it may result in a loss of brake fluid below the detection level of the fluid indicator switch. Without.
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
Robert Bosch LLC (Bosch) is recalling certain Hydro-Max brake master cylinders with 2.0 inch bore and 84 cubic inch reservoir equipped with a brake fluid level indicator switch and without a differential pressure switch, manufactured between July 1, 2011 and April 12, 2012. The brake fluid level indicator (FLI) may not properly detect a low brake fluid level situation and warn the driver.
Reported concern (NHTSA)
If the brake system develops an external leak, it may result in a loss of brake fluid below the detection level of the fluid indicator switch. Without a warning, the driver may be unaware that the brake fluid level is low. A low brake fluid level may reduce the available braking force which could lengthen the required stopping distance and increase the risk of a crash.
Recommended Action
Per NHTSA guidance
Bosch will notify customers and replace the fluid level indicator switch free of charge. The recall began on April 4, 2013. Owners may contact the Bosch Technical Support and Warranty Hotline at 1-855-426-7247.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026