Brakes› Master Cylinders-Boosters and Components

Dorman

NEW MASTER CYLINDER

$176.32

SKU: D00I M631067

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Dorman M631067 is a brake master cylinder engineered to restore proper brake hydraulics for Mazda 3 and 3 Sport models. This aluminum master cylinder ensures consistent brake fluid pressure and reliable stopping power.

Constructed from durable aluminum, it features two mounting holes for secure installation and flanged dual outlets with M12x1.0 thread size. The bore diameter is 0.812 inches. It includes a master cylinder cap and bleeder kit. Mounting hardware, push rod, and brake booster are not included.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandDorman
Part NumberD00I M631067

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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