Replace a leaking or worn Suzuki Grand Vitara master cylinder with the Dorman First Stop Brake Master Cylinder M630370, a direct-fit replacement for the 2001 Suzuki Grand Vitara and the 2002-2005 Suzuki XL-7. The master cylinder turns force from the brake pedal into hydraulic pressure and sends it through the brake lines to the wheels. This unit is precision-engineered to replicate the design, function and performance of the original master cylinder on the listed applications. It is built from new, high-quality materials for a safe, durable replacement.
- Precise replacement: the aluminum cylinder housing is constructed to match the material of the original part and deliver similar performance.
- Durable design: every rubber component uses a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: made entirely from new materials for quality and safety.
- Strict specifications: built to rigorous SAE International standards.
Specifications: 1 in bore diameter · 4 outlets · M10 x 1.0 secondary and rearward outlets · 1 mm primary outlet thread pitch · reservoir included · sensor included · mounting hardware not included. Country of origin: China.
Signs a master cylinder may need replacing include a soft or sinking brake pedal, fluid leaking at the master cylinder, or a brake fluid level that keeps dropping. Other brake components can produce the same symptoms, so diagnose the cause before replacing the part. Mounting hardware is not included. Consult the vehicle service information for the correct fasteners and whether the originals may be reused. Bleed the brake system as the service procedure directs.
Quantity per application: 1.
See the "Vehicles it fits" section for every listed vehicle.
Interchange: 100-1943 · 13-3413 · 11-3413 · 130.48021 · 355-01009
MC390894 · 5110052D10 · F142400 · MC142400 · 1001943 · 133413 · 113413 · 13048021 · 35501009
This part cross-references / interchanges with the following part numbers:
100-1943, 13-3413, 11-3413, 130.48021, 355-01009, MC390894, 5110052D10, F142400, MC142400
Frequently Asked Questions
Which vehicles does the Dorman M630370 fit?
It is listed for the 2001 Suzuki Grand Vitara and the 2002-2005 Suzuki XL-7 (engine: All), with one master cylinder per vehicle.
Does it come with a reservoir and sensor?
Yes. The M630370 includes both the reservoir and the sensor. Mounting hardware is not included.
What is the master cylinder made of?
The cylinder housing is aluminum and is constructed to match the original part's material. The rubber components use an EPDM compound that resists glycol-based brake fluid.
What are the bore and outlet specifications?
It has a 1 in bore and 4 outlets. The secondary and rearward outlets are M10 x 1.0, and the primary outlet has a 1 mm thread pitch.
What signs suggest a master cylinder may need replacing?
A soft or sinking pedal, fluid leaking at the master cylinder, or a steadily dropping fluid level may indicate a problem. Other brake parts can cause the same symptoms, so diagnose the cause first.
