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Dorman - First Stop Brake Master Cylinder P/N:M630222
$160.99
Push firm, consistent hydraulic pressure to every brake circuit with the Dorman - First Stop Brake Master Cylinder M630222. It drops in as a direct-fit replacement for the listed applications: the 2001-2003 Mazda Protege and the 2002-2003 Mazda Protege5. A master cylinder is the heart of the hydraulic brake system — it converts the force from your brake pedal into fluid pressure and distributes that pressure to the brake circuits.
- Core function: Converts brake pedal force into hydraulic pressure and feeds it to the vehicle's brake circuits.
- Direct-fit design: Engineered to install on the listed Mazda applications.
- Service tip: Bench-bleed the unit before installation to purge trapped air, and bleed the full system afterward.
If a failed or internally leaking master cylinder is the cause of a sinking or spongy pedal, this replaces it. Signs the original may need replacing include a brake pedal that slowly sinks to the floor, a soft or spongy pedal, or fluid loss at the cylinder. Diagnose the cause before replacing, as these symptoms can have other sources.
Interchange: M901255 · 13895 · 13-2787 · 132787 · 11-2787 · 112787 · 130.45421 · MC511930 · 355-80074 · 35580074 · M55063 · BJ3K4340Z · MC390539 · MC390920 · MC391135 · F141598 · MC141598. Manufacturer part number M630222.
This part cross-references / interchanges with the following part numbers:
M901255, 13895, 13-2787, 11-2787, 130.45421, MC511930, 355-80074, M55063, BJ3K4340Z, MC390539, MC390920, MC391135, F141598, MC141598
Frequently Asked Questions
What does a brake master cylinder do?
It converts the force from your brake pedal into hydraulic pressure and distributes that pressure to the brake circuits, so the wheel brakes can apply.
Does this fit my vehicle?
It is a direct-fit replacement for the 2001-2003 Mazda Protege and the 2002-2003 Mazda Protege5. Check the Buyer's Guide tab to confirm the match for your vehicle.
What are signs my master cylinder may need replacing?
A pedal that slowly sinks to the floor, a soft or spongy pedal, or brake fluid loss at the cylinder. Diagnose the cause first, since these signs can have other sources.
Should I bench-bleed this before installing?
Bench-bleeding a master cylinder before installation helps purge trapped air for a firmer pedal. Bleed the complete brake system after installing as well.
What part numbers does this replace?
It interchanges with M901255, 13895, 13-2787, 11-2787, 130.45421, MC511930, 355-80074, M55063, BJ3K4340Z, MC390539, MC390920, MC391135, F141598 and MC141598.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M630222
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