Dorman - First Stop Brake Master Cylinder P/N:M73354
Turn pedal effort into steady hydraulic pressure with the Dorman First Stop 2007-2017 Jeep Wrangler master cylinder, part number M630517. This new unit is precision-engineered to mirror the original master cylinder's design, function and performance. It installs as a direct-fit replacement on the 2007-2017 Jeep Wrangler with all engines, with one used per vehicle.
Specifications: 1 in bore diameter and two outlets. The rearward outlet size is 7/16-24 and the secondary outlet thread diameter is 3/8-24. The reservoir and a sensor are included. Mounting hardware is not included. Country of origin: China.
Signs the master cylinder may need replacing include a soft or sinking brake pedal, fluid seeping around the unit, or a falling reservoir level. Diagnose the cause before replacing, because other brake components can produce similar symptoms. Consult the vehicle service information for the correct fasteners and whether they may be reused. After installation, bleed the brake system following the service procedure.
Interchange: 100-2436 · 13-3330 · 10-3330 · 10-4069 · 10-4339 · 130.63074 · 355-42021
1002436 · 133330 · 103330 · 104069 · 104339 · 13063074 · 35542021 · 68003617AA · 68003617AB · 68057474AA · 68057474AB · 68057474AC · 68057474AD · NM4144 · MC391068 · F144417 · MC144417 · R135062
This part cross-references / interchanges with the following part numbers:
What vehicles does the Dorman M630517 master cylinder fit?
It is listed for the 2007-2017 Jeep Wrangler with all engines. Each vehicle uses one master cylinder.
Does it come with a reservoir and sensor?
Yes, the reservoir and a sensor are included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners.
What signs suggest my master cylinder may need replacing?
Signs include a soft or sinking pedal, fluid seeping at the unit, or a falling reservoir level. Diagnose the cause first, because other brake parts can cause similar symptoms.
What brake fluid are the rubber components designed for?
All rubber components are made of a high-quality EPDM compound for resistance to glycol-based brake fluid. Use the fluid type your vehicle's service information specifies.
What are the bore and outlet sizes?
It has a 1 in bore diameter and two outlets. The rearward outlet size is 7/16-24 and the secondary outlet thread diameter is 3/8-24.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.