Dorman M630155 Brake Master Cylinder

Reliable Brake Master Cylinder for Dodge and Plymouth Neon

The Dorman M630155 brake master cylinder is engineered to restore proper brake hydraulics for Dodge and Plymouth Neon models. Designed with precision, this master cylinder includes a reservoir and sensor to ensure optimal brake system performance.

• Master cylinder bore diameter: 0.875 inches
• Constructed from durable aluminum material
• Includes reservoir and sensor for complete functionality
• Four outlet ports for efficient brake fluid distribution
• Rearward outlet size: 7/16-24 & M18 x 1.0 thread
• Secondary outlet thread diameter: 7/16-24 & M18 x 1.0
• Mounting hardware not included

Product Details and Specifications

The Dorman M630155 brake master cylinder is designed specifically for Dodge and Plymouth Neon vehicles, providing a precise fit and reliable operation. Its 0.875-inch bore diameter allows for consistent hydraulic pressure, while the aluminum construction offers corrosion resistance and long-term durability. The included reservoir and sensor ensure the brake fluid level is monitored and maintained, contributing to safe braking performance. With four outlets, this master cylinder supports efficient brake fluid flow to all wheels. The rearward and secondary outlet threads are sized at 7/16-24 and M18 x 1.0, compatible with the original brake line fittings on the Neon.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or damaged master cylinder
• Replaces leaking or cracked reservoir components
• Resolves brake fluid level sensor malfunctions
• Addresses inconsistent brake pedal feel or sponginess
• Fixes brake fluid leaks from master cylinder outlets

Installation Notes and Tips

Installation of the Dorman M630155 brake master cylinder requires basic brake system knowledge and tools. Since mounting hardware is not included, retain original fasteners or source compatible replacements. Bleed the brake system thoroughly after installation to remove air and ensure proper hydraulic function. Verify sensor connections are secure to maintain accurate brake fluid level monitoring. Consult vehicle-specific service manuals for torque specifications and detailed procedures.

Quality Assurance and Warranty

Dorman manufactures the M630155 brake master cylinder to meet or exceed OEM standards for fit and function. The aluminum construction and integrated sensor contribute to reliable brake system operation. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics products. Refer to official Dorman documentation for complete warranty information.