Dorman M39654 Brake Master Cylinder

Reliable Brake Master Cylinder for Mazda B-Series Trucks

The Dorman M39654 brake master cylinder is engineered to restore proper brake hydraulics for Mazda B2000, B2200, and B2600 models. Designed with durable cast iron and equipped with a reservoir and sensor, this master cylinder ensures consistent braking performance.

Key Features of the Dorman M39654 Brake Master Cylinder

• Master cylinder bore diameter: 0.875 inches for precise hydraulic pressure
• Constructed from cast iron for strength and durability
• Includes reservoir for brake fluid storage
• Equipped with a sensor to monitor brake system status
• Three outlet ports with a secondary outlet thread diameter of 10 mm
• Rearward outlet size: M10 x 1.0 with a thread pitch of 1.0
• Package contains the master cylinder only; mounting hardware not included

Detailed Description of the Dorman M39654 Brake Master Cylinder

This brake master cylinder is specifically designed for Mazda B2000, B2200, and B2600 trucks, providing a direct replacement that meets OEM specifications. The 0.875-inch bore diameter allows for accurate hydraulic pressure control, essential for safe braking. Made from cast iron, the unit offers long-lasting durability under demanding conditions. The included reservoir simplifies installation and maintenance by providing an integrated brake fluid container. Additionally, the sensor included with this master cylinder helps monitor brake system performance, enhancing safety and reliability. The three outlet ports, including a rearward outlet sized M10 x 1.0, accommodate the brake lines for proper fluid distribution.

Common Brake Issues Addressed by This Master Cylinder

• Spongy or unresponsive brake pedal feel
• Brake fluid leaks from the master cylinder
• Brake warning light activation due to sensor issues
• Uneven braking or reduced stopping power
• Failure of the original master cylinder due to wear or corrosion

Installation Notes and Tips

• Ensure compatibility with Mazda B2000, B2200, and B2600 models before installation
• Bleed the brake system thoroughly after installation to remove air
• Use appropriate brake fluid as specified by the vehicle manufacturer
• Mounting hardware is not included; reuse existing hardware or source separately
• Check sensor connections carefully to maintain brake system monitoring

Quality Assurance and Warranty Information

Dorman manufactures this brake master cylinder to meet or exceed OEM standards, using cast iron for durability and including a sensor for system monitoring. While mounting hardware is not included, the product is designed for straightforward installation on compatible Mazda B-series trucks. Warranty details can be obtained from the product packaging or Dorman's official documentation to ensure coverage and support.