Dorman M88787 Brake Master Cylinder

Reliable Brake Master Cylinder for Chrysler and Dodge Vehicles

The Dorman M88787 brake master cylinder is engineered to restore proper brake hydraulics in select Chrysler and Dodge models. Designed with a durable cast iron construction and a built-in reservoir, this master cylinder ensures consistent brake fluid delivery for safe stopping power.

• Master cylinder bore diameter: 1.031 inches for precise hydraulic pressure
• Constructed from cast iron for long-lasting durability
• Includes reservoir for brake fluid storage
• Two outlet ports with rearward outlet size 1/2-20 and secondary outlet thread diameter 9/16-18
• Compatible with Chrysler Aspen, Dodge Dart, and Chrysler LeBaron models

Product Details and Specifications

The Dorman M88787 brake master cylinder features a 1.031-inch bore diameter, which is critical for maintaining the correct hydraulic pressure within the brake system. Its cast iron material provides strength and resistance to wear, ensuring reliable performance over time. The integrated reservoir simplifies brake fluid management, while the two outlet ports accommodate standard brake line fittings with rearward outlet size 1/2-20 and secondary outlet thread diameter 9/16-18. This master cylinder is designed specifically for use in Chrysler Aspen, Dodge Dart, and Chrysler LeBaron vehicles, making it a precise replacement part for these models.

Common Applications and Problem Resolution

• Restores brake fluid pressure in vehicles experiencing spongy or unresponsive brakes
• Replaces leaking or damaged master cylinders causing brake fluid loss
• Addresses brake pedal sinking or failure to maintain pressure
• Eliminates inconsistent brake performance due to worn internal components
• Ensures proper brake hydraulics for safe vehicle operation

Installation Notes and Tips

When installing the Dorman M88787 brake master cylinder, ensure the brake fluid reservoir is properly filled and free of contaminants. Bleed the brake system thoroughly to remove air pockets and verify all connections use the correct thread sizes: 1/2-20 for the rearward outlet and 9/16-18 for the secondary outlet. Although mounting hardware is not included, the unit is designed to fit directly onto the brake booster assembly of compatible Chrysler and Dodge models. Follow manufacturer torque specifications to avoid leaks or damage.

Quality Assurance and Warranty Information

Dorman manufactures the M88787 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and integrated reservoir contribute to its durability and reliability. This part is backed by Dorman's limited warranty, providing coverage against defects in materials and workmanship under normal use conditions.