Dorman M39999 Brake Master Cylinder

Reliable Brake Master Cylinder for Toyota Land Cruiser

The Dorman M39999 brake master cylinder is engineered to restore proper brake hydraulics for Toyota Land Cruiser models. Designed with precision, this aluminum master cylinder includes a reservoir and sensor to ensure consistent brake performance.

• Master cylinder bore diameter: 1 inch for accurate hydraulic pressure
• Constructed from durable aluminum material
• Includes reservoir for fluid storage
• Equipped with a sensor for brake system monitoring
• Two outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0
• Secondary outlet thread diameter of 10 mm

Product Details and Specifications

The Dorman M39999 brake master cylinder is specifically designed for Toyota Land Cruiser vehicles, ensuring compatibility and reliable fitment. Its aluminum construction offers corrosion resistance and strength, while the 1-inch bore diameter provides precise hydraulic control. The included reservoir allows for proper brake fluid containment, and the integrated sensor supports brake system diagnostics. Featuring two outlets, including a rearward outlet sized M10 x 1.0 with a 1.0 thread pitch, this master cylinder supports efficient brake fluid distribution. The secondary outlet thread diameter measures 10 mm, accommodating the necessary brake line connections.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or damaged master cylinder
• Replaces leaking or cracked brake fluid reservoir
• Resolves brake warning light issues related to sensor failure
• Addresses inconsistent brake pedal feel or sponginess
• Fixes brake fluid leaks from outlet threads or seals

Installation Notes and Tips

Installation of the Dorman M39999 brake master cylinder requires proper brake system bleeding to remove air and ensure optimal performance. Verify thread pitch and outlet sizes match your Toyota Land Cruiser brake lines before installation. Since mounting hardware is not included, retain original hardware or source compatible fasteners. Consult vehicle service manual for torque specifications and safety precautions during installation.

Quality Assurance and Warranty

Dorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term durability and reliable brake system operation. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in materials and workmanship.