Dorman - First Stop Brake Master Cylinder P/N:M39842

Convert brake-pedal effort into the hydraulic pressure that actuates your brake circuits with the Dorman First Stop Brake Master Cylinder M39842. It drops in as a direct-fit replacement for the 1990-1992 Geo Prizm (All), the 1990-1992 Toyota Corolla (All), and the separate 1996-1997 Toyota Corolla (All), and its aluminum housing is built to match the casting material of the original part for comparable performance.

• 100% new: made entirely of new materials, not remanufactured.
• Aluminum housing: constructed to match the original part's casting material.
• EPDM rubber components: a high-quality EPDM compound resists glycol-based brake fluid.
• Reservoir & sensor included: ships with the reservoir and fluid-level sensor; two outlets with M10 x 1.0 threads.

The cylinder has a 0.813 in bore and is made to meet SAE International standards. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. If a leaking or worn original master cylinder is the cause of a sinking or spongy pedal, this replaces it. Country of origin: China.

Manufacturer part number M39842.