Dorman M39465 Brake Master Cylinder

Reliable Brake Master Cylinder for Mazda B2000

The Dorman M39465 brake master cylinder is designed specifically for the Mazda B2000, providing precise hydraulic control for your vehicle's braking system. Crafted from durable cast iron, this master cylinder ensures consistent performance and longevity under demanding conditions.

• Master cylinder bore diameter: 0.813 inches for accurate hydraulic pressure
• Constructed from cast iron for strength and durability
• Two outlet ports with rearward outlet size M10 x 1.25 and thread pitch 1.25
• Secondary outlet thread diameter of 10 mm
• Includes the master cylinder only; reservoir and mounting hardware not included

Technical Details and Construction

The Dorman M39465 brake master cylinder features a cast iron body that withstands high pressure and heat generated during braking. Its 0.813-inch bore diameter is engineered to deliver precise hydraulic pressure to the brake system, ensuring responsive braking performance. The unit includes two outlets, with a rearward outlet sized M10 x 1.25 and a secondary outlet thread diameter of 10 mm, both with a thread pitch of 1.25, compatible with the Mazda B2000 brake lines. This master cylinder does not include a reservoir or sensor, so it is intended for use with existing components or separate replacements.

Compatible Applications and Common Issues Addressed

• Compatible with Mazda B2000 models requiring a 0.813-inch bore brake master cylinder
• Replaces worn or leaking master cylinders causing brake fluid loss
• Addresses spongy or unresponsive brake pedal feel due to internal seal failure
• Resolves brake pressure inconsistencies affecting stopping power
• Suitable for restoring proper hydraulic function in brake systems without integrated sensors

Installation Notes and Tips

When installing the Dorman M39465 brake master cylinder, ensure the brake fluid reservoir and mounting hardware are compatible and in good condition, as these are not included. Properly bleed the brake system after installation to remove air and restore full hydraulic pressure. Verify thread sizes and outlet orientations match your Mazda B2000 brake lines to avoid fitment issues.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM specifications for fit, form, and function. While no specific warranty information is provided, Dorman products typically undergo rigorous quality control to ensure reliability and durability in automotive brake hydraulics.