Brake Parts Inc. is recalling certain brake master cylinders sold under the Raybestos, NAPA and AC Delco brands as aftermarket replacement parts for 2012-2017 Volkswagen Beetle, 2005-2018 Volkswagen Jetta and 2007-2010 Volkswagen Jetta GLI vehicles. (Part numbers MC391232, M4840, and 18M2578)

Sample testing and warranty data show that the crimping of the aluminum housing on the master cylinder may be insufficient. The piston could pop out of the master cylinder housing and drivers could experience a complete loss of braking or unintended braking.

Because the defect would exhibit itself shortly after installation, Brake Parts have instructed their distributors to cover products that have been in service less than one year. The manufacturer is still developing a fix for this recall which is expected to begin August 10, 2020. The NHTSA campaign number is 20E-042.