Centric 130.45800 Brake Master Cylinder

Centric Premium Brake Master Cylinder

The Centric Premium Brake Master Cylinder, part number 130.45800, is an OE-style hydraulic replacement built to match original equipment quality, configuration, and fitment. It is a direct service part for Mazda Miata applications and includes a removable reservoir, cap, and aluminum master cylinder body.

Centric’s Premium Brake Master Cylinders are part of its brake hydraulics program, which covers master cylinders, wheel cylinders, brake hoses, repair kits, and remanufactured power boosters. For Mazda Miata brake master cylinder replacement needs, 130.45800 provides the correct bore size and outlet configuration for the listed applications.

Key Features

• Part number 130.45800
• Fits 1990-1997 Mazda Miata and 1999 Mazda Miata
• 0.875 in. / 22.225 mm bore diameter
• Aluminum master cylinder body
• Single removable plastic reservoir
• Reservoir cap included
• Primary outlet: M10-1.00 bubble flare
• Secondary outlet: M10-1.00 inverted flare
• 2 mounting holes
• Center bottom screw port design with additional front and rear ports

Detailed Description

Built for brake hydraulic service, this Centric master cylinder is configured to match OE-style fitment and function on Mazda Miata models listed below. The 7/8 in. bore size, aluminum housing, and single removable reservoir support proper brake system operation while maintaining the original-style layout used in the application. If you are replacing a worn or leaking Mazda Miata brake master cylinder, 130.45800 offers the correct thread sizes, flare types, and mounting pattern for the specified vehicles.

This part cross-references Dorman First Stop M390034 and Raybestos Brakes MC390034 for the same application.

What It Helps Fix

• Brake pedal that sinks under pressure
• External brake fluid leakage at the master cylinder
• Loss of hydraulic pressure in the brake system
• Soft or inconsistent brake pedal feel
• Brake warning concerns related to master cylinder wear

Installation Notes and Tips

Verify outlet thread size, flare type, and reservoir layout before installation. This master cylinder does not include mounting hardware, a brake booster, push rod, or bleeder hoses. Bench bleeding is recommended before final installation to help remove trapped air from the hydraulic circuit. Confirm all brake line connections are clean and properly tightened to the specified torque.

Compatible With: Fits 1990-1997 Mazda Miata, N/A; Fits 1999 Mazda Miata, N/A.

Quality Assurance

Centric Premium Brake Master Cylinders are engineered to match original equipment parts in quality, configuration, and fitment. The Centric brake hydraulic program is built around OE-style replacement components for brake service applications.