Dorman M39996 Brake Master Cylinder

Overview of Dorman Brake Master Cylinder M39996

The Dorman Brake Master Cylinder M39996 is designed specifically for Toyota 4Runner, Land Cruiser, Pickup, and T100 models. This cast iron master cylinder includes a reservoir and sensor, providing reliable brake hydraulics performance for your vehicle.

• Compatible with Toyota 4Runner, Land Cruiser, Pickup, and T100
• Master cylinder bore diameter: 1 inch
• Constructed from durable cast iron material
• Includes reservoir and sensor for enhanced functionality
• Two outlets with secondary outlet thread diameter of 10 mm
• Rearward outlet size: M10 x 1.0 with 1.0 thread pitch
• Mounting hardware not included

Detailed Product Description

The Dorman M39996 brake master cylinder is engineered to meet the specific hydraulic requirements of select Toyota trucks and SUVs. Its cast iron construction ensures durability and resistance to wear under demanding braking conditions. The included reservoir allows for proper brake fluid storage, while the integrated sensor supports brake system monitoring. Featuring a 1-inch bore diameter and two outlets, this master cylinder facilitates efficient brake fluid distribution. The secondary outlet thread diameter of 10 mm and rearward outlet size of M10 x 1.0 with a 1.0 thread pitch provide precise fitment and secure connections within the brake hydraulic system.

Common Applications and Issues Addressed

• Restores proper brake fluid pressure in Toyota 4Runner, Land Cruiser, Pickup, and T100 models
• Replaces worn or leaking master cylinders causing brake pedal sponginess
• Solves brake fluid reservoir leaks or sensor malfunctions
• Addresses brake system failures related to hydraulic pressure loss
• Improves overall brake responsiveness and safety

Installation Notes and Tips

• Ensure compatibility with your Toyota model before installation
• Brake fluid must be properly bled after installation to remove air from the system
• Mounting hardware is not included; retain original hardware or source separately
• Handle the sensor connection carefully to avoid damage
• Consult vehicle service manual for torque specifications and installation procedures

Quality Assurance and Warranty

Dorman brake master cylinders are manufactured to meet or exceed OEM standards for fit, form, and function. The M39996 part undergoes rigorous quality control to ensure reliable performance in Toyota 4Runner, Land Cruiser, Pickup, and T100 vehicles. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official documentation for exact warranty terms.