Dorman M630459 Brake Master Cylinder

Reliable Brake Master Cylinder for Nissan Frontier, Pathfinder, and Xterra

The Dorman M630459 Brake Master Cylinder is engineered to restore proper brake hydraulics for Nissan Frontier, Pathfinder, and Xterra models. Designed with precision, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.

Key Features of the Dorman M630459 Brake Master Cylinder

• Master cylinder bore diameter of 1 inch for optimal fluid displacement
• Durable aluminum construction for corrosion resistance and longevity
• Includes reservoir and sensor for integrated brake system monitoring
• Four outlets with M12 x 1.0 thread pitch for secure brake line connections
• Compatible with Nissan Frontier, Pathfinder, and Xterra vehicles

Detailed Product Description

This Dorman brake master cylinder (part number M630459) is crafted from aluminum, providing a lightweight yet robust component that resists corrosion and wear. The 1-inch bore diameter is designed to deliver precise hydraulic pressure to the brake system, ensuring consistent pedal feel and braking performance. The included reservoir allows for proper brake fluid storage, while the integrated sensor supports vehicle brake system diagnostics. Featuring four outlets with standardized M12 x 1.0 threads, this master cylinder facilitates secure and leak-free connections to the brake lines. It is specifically engineered for use in Nissan Frontier, Pathfinder, and Xterra models, making it a direct replacement part that meets OEM specifications.

Common Applications and Issues Addressed

• Restores brake fluid pressure in Nissan Frontier, Pathfinder, and Xterra vehicles
• 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 brake responsiveness and safety on compatible Nissan models

Installation Notes and Tips

• Ensure brake system is properly bled after installation to remove air
• Verify compatibility with Nissan Frontier, Pathfinder, or Xterra model year before installation
• Use appropriate brake fluid as specified by the vehicle manufacturer
• Inspect brake lines and fittings for wear or damage during replacement
• Sensor connection should be securely attached to maintain brake system monitoring

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 reliable performance and durability. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Always consult product documentation for exact warranty terms.