HomeBrake > Brake HydraulicsDorman M390112 Brake Master Cylinder
Part #: M390112

Dorman M390112 Brake Master Cylinder

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4 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, 929
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Overview of the Dorman Brake Master Cylinder for Mazda 929

The Dorman M390112 brake master cylinder is designed specifically for Mazda 929 models, providing reliable brake hydraulics performance. This aluminum master cylinder includes a reservoir and sensor, ensuring compatibility and efficient operation within your vehicle's braking system.

  • Master cylinder bore diameter: 1 inch
  • Constructed from durable aluminum material
  • Includes reservoir for fluid storage
  • Equipped with a sensor for monitoring brake system status
  • Two outlets with rearward outlet size M10 x 1.0 and secondary outlet thread diameter 10 mm
  • Thread pitch of 1.0 for secure connections
  • Mounting hardware not included

Detailed Product Description

The Dorman M390112 brake master cylinder is engineered to meet the specific hydraulic requirements of the Mazda 929. Its 1-inch bore diameter allows for precise brake fluid pressure control, while the aluminum construction offers corrosion resistance and long-term durability. The included reservoir ensures proper fluid containment, and the integrated sensor provides real-time feedback to the vehicle’s brake system. Featuring two outlets, including a rearward outlet sized M10 x 1.0 and a secondary outlet with a 10 mm thread diameter, this master cylinder supports efficient brake line connections. The thread pitch of 1.0 ensures a tight and secure fit, critical for maintaining brake system integrity.

Applications and Problem Solving

This brake master cylinder is compatible with Mazda 929 models and is designed to address common brake system issues such as:

  • Brake fluid leaks due to worn or damaged master cylinders
  • Reduced brake pressure affecting stopping performance
  • Faulty brake fluid reservoir causing contamination or fluid loss
  • Sensor malfunctions impacting brake system warnings
  • Corrosion or wear in the master cylinder body compromising brake hydraulics

Installation Notes and Tips

  • Ensure the brake system is fully depressurized before removal of the old master cylinder
  • Bleed the brake system thoroughly after installation to remove air pockets
  • Verify thread pitch and outlet sizes match your vehicle’s brake lines for proper fitment
  • Use appropriate brake fluid as specified by Mazda for the 929 model
  • Check sensor connections carefully to maintain brake system monitoring functions

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for the Mazda 929. The aluminum construction and integrated sensor contribute to reliable brake system performance. While mounting hardware is not included, the part is designed for straightforward installation with existing components. Warranty details should be confirmed through the point of purchase or Dorman’s official resources.

BrandDorman
Part NumberM390112
Master Cylinder Bore Diameter1
Master Cylinder MaterialAluminum
Mounting Hardware IncludedNo
Number of Outlets2
Package ContentsMaster Cylinder
Rearward Outlet SizeM10 X 1.0
Reservoir IncludedYes
Secondary Outlet Thread Diameter10
Sensor IncludedYes
Thread Pitch1.0

This part fits 4 vehicles. Search below:

YearMakeModelPositionNotes
1995Mazda929N/ABrake Master Cylinder for vehicles without ABS, featuring a 1 inch bore size.
1994Mazda929N/ABrake Master Cylinder for vehicles without ABS, featuring a 1 inch bore size.
1993Mazda929N/ABrake Master Cylinder for vehicles without ABS, featuring a 1 inch bore size.
1992Mazda929N/ABrake Master Cylinder for vehicles without ABS, featuring a 1 inch bore size.

* 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:

11-26221255113-2622130.4560418M62683-14604F128162HG3043400DM-53604M900836MC390112MC509840

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