Dorman M98952 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet and GMC Trucks

The Dorman M98952 brake master cylinder is designed to restore proper brake function in select Chevrolet and GMC trucks. Engineered with durable cast iron and a built-in reservoir, this master cylinder ensures consistent hydraulic pressure for safe braking performance.

• Master cylinder bore diameter: 1 inch
• Constructed from cast iron for durability
• Includes reservoir for fluid storage
• Two outlet ports with rearward outlet size 1/2-20 and secondary outlet thread diameter 9/16-18
• Compatible with Chevrolet C10, C10 Suburban, C1500, GMC G10, and K10 Suburban models
• Part number M98952

Durable Construction and Precise Fitment

This Dorman brake master cylinder features a robust cast iron body that withstands the rigors of daily driving and harsh conditions. The 1-inch bore diameter is designed to provide the correct hydraulic pressure for the brake system. The included reservoir allows for proper brake fluid storage and circulation, while the two outlet ports accommodate the brake lines with specific thread sizes (1/2-20 rearward outlet and 9/16-18 secondary outlet) to ensure a secure connection. This part is engineered specifically for Chevrolet and GMC trucks including the C10, C10 Suburban, C1500, G10, and K10 Suburban, making it a precise replacement for the original equipment.

Common Applications and Problem Resolution

• Restores brake pressure loss due to worn or leaking master cylinder
• Eliminates spongy or unresponsive brake pedal feel
• Replaces master cylinder with damaged or corroded cast iron body
• Addresses brake fluid leaks from the reservoir or outlet ports
• Improves overall brake system reliability on Chevrolet and GMC trucks

Installation Notes and Tips

Installation of the Dorman M98952 brake master cylinder requires careful attention to brake line connections and proper bleeding of the brake system to remove air. Note that mounting hardware is not included, so original hardware should be reused or replaced as needed. Ensure compatibility with your specific Chevrolet or GMC truck model before installation. Proper torque specifications should be followed to avoid leaks or damage to the outlet threads.

Quality Assurance and Warranty

Dorman brake master cylinders are manufactured to meet or exceed OEM standards for fit, form, and function. The cast iron construction provides long-lasting durability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Refer to Dorman’s official warranty policy for complete information.