HomeBrake > Brake HydraulicsDorman M630620 Brake Master Cylinder
Part #: M630620

Dorman M630620 Brake Master Cylinder

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5 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, CX-7
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Overview of Dorman Brake Master Cylinder for Mazda CX-7

The Dorman M630620 brake master cylinder is designed specifically for Mazda CX-7 models, providing reliable brake hydraulics performance. Crafted from durable aluminum, this master cylinder ensures consistent braking pressure and long-lasting operation.

  • Compatible with Mazda CX-7 vehicles
  • Master cylinder bore diameter: 0.875 inches
  • Constructed from aluminum for strength and corrosion resistance
  • Includes two outlets with M12 x 1.0 thread size
  • Does not include reservoir or mounting hardware
  • Package contains the master cylinder only

Detailed Product Description

The Dorman M630620 brake master cylinder is engineered to meet the specific hydraulic requirements of the Mazda CX-7. Featuring a bore diameter of 0.875 inches, this aluminum master cylinder offers precise brake fluid pressure control. It includes two outlets, both with M12 x 1.0 thread pitch, designed for secure and leak-free connections to the brake lines. While the reservoir and mounting hardware are not included, this part is intended as a direct replacement for the original master cylinder, ensuring compatibility and ease of integration into the vehicle's brake system.

Common Applications and Problem Resolution

  • Restores proper brake fluid pressure for improved braking response
  • Replaces worn or leaking master cylinders causing brake fluid loss
  • Addresses spongy or unresponsive brake pedal issues
  • Eliminates brake system leaks due to damaged cylinder bore or seals
  • Supports safe and consistent brake operation in Mazda CX-7 models

Installation Notes and Tips

  • Ensure brake fluid reservoir is compatible and properly installed, as it is not included
  • Bleed the brake system thoroughly after installation to remove air
  • Verify thread pitch (M12 x 1.0) matches brake line fittings
  • Inspect mounting points and hardware before installation, as mounting hardware is not supplied
  • Follow vehicle manufacturer torque specifications for secure installation

Quality Assurance and Warranty

Dorman manufactures the M630620 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction provides corrosion resistance and durability under normal operating conditions. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.

BrandDorman
Part NumberM630620
Master Cylinder Bore Diameter0.875
Master Cylinder MaterialAluminum
Mounting Hardware IncludedNo
Number of Outlets2
Package ContentsMaster Cylinder
Rearward Outlet SizeM12 X 1.0
Reservoir IncludedNo
Secondary Outlet Thread DiameterM12 X 1.0
Sensor IncludedNo
Thread Pitch1.0

This part fits 5 vehicles. Search below:

YearMakeModelPositionNotes
2011MazdaCX-7N/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2010MazdaCX-7N/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2009MazdaCX-7N/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2008MazdaCX-7N/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2007MazdaCX-7N/AFits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

11-378313-3783130.45119EG234340ZMC391258R135756

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.