Dorman M630154 brake master cylinder for the 1999-2004 Jeep Grand Cherokee turns pedal force into hydraulic pressure for the brakes.
- Part of the Dorman First Stop line, made entirely of new materials
- Aluminum master cylinder with a 1 in bore diameter
- Rubber components in EPDM compound for resistance to glycol-based brake fluid
- Two outlets, with the reservoir included
- Made to meet SAE International standards
Quick facts
- Part: Dorman M630154 brake master cylinder
- Fits: 1999-2004 Jeep Grand Cherokee
- Material: Aluminum
- Condition: New
A brake pedal that feels soft or sinks slowly, or brake fluid loss at the reservoir, can mean a master cylinder is wearing out. A leaking brake hose, a sticking caliper or air in the brake lines can be behind those signs too, so find the cause before buying. Brakes are a safety system, so have a shop inspect them promptly.
Fits
This master cylinder fits the 1999-2004 Jeep Grand Cherokee, and that vehicle takes one.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 1 in
- Number of outlets: 2
- Rearward outlet size: M10 x 1.0
- Secondary outlet thread diameter: M12 x 1.0
- Primary outlet thread pitch: 1 mm
Build and materials
- Material: Aluminum
- Rubber components: EPDM compound
- Reservoir: included
- Standards: SAE International
- Condition: New
- Country of origin: China
In the box
One master cylinder with its reservoir. Mounting hardware and a sensor are not included; plan on new fasteners, since the old ones may not be reusable.
Interchange: 83-40025 · 100-2061 · M-87025 · 13-2917 · 10-2917 · 130.58003 · 131.58003 · 355-42002
13689 · 5011260AA · 5011260AB · MC504730 · 5011260 · M3082 · NM3082 · MC390511 · F140676 · MC140676
This part cross-references / interchanges with the following part numbers:
83-40025, 100-2061, M-87025, 13689, 13-2917, 10-2917, 130.58003, 131.58003, 5011260AA, 5011260AB, MC504730, 355-42002, 5011260, M3082, NM3082, MC390511, F140676, MC140676
Frequently Asked Questions
Is this the master cylinder for a 2004 Jeep Grand Cherokee in the 1999-2004 range?
Yes. Dorman M630154 is listed for the 1999-2004 Jeep Grand Cherokee, and that vehicle takes one.
Does the Dorman M630154 come with the reservoir?
Yes, the reservoir is included. Mounting hardware and a sensor are not, so plan on new hardware.
What are the bore size and outlet threads on this brake master cylinder?
The bore diameter is 1 in. The rearward outlet is M10 x 1.0, the secondary outlet thread diameter is M12 x 1.0 and the primary outlet thread pitch is 1 mm.
What are the signs that a master cylinder's seals are leaking?
A pedal that sinks slowly, a falling fluid level in the reservoir or fluid around the cylinder can be signs. A shop can pressure-test it, and brake problems should be checked promptly.
Is the Dorman M630154 master cylinder made of aluminum?
Yes. The master cylinder is aluminum, and it is made entirely of new materials to meet SAE International standards.
