Raybestos MC39651 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet and GMC Trucks

The Raybestos Element3; New Brake Master Cylinder MC39651 is engineered to restore precise brake hydraulics for Chevrolet C1500, GMC K1500, and R10 and R1500 Suburban models. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent brake performance and safety.

• Constructed from lightweight, corrosion-resistant aluminum
• Two mounting holes with 0.423-inch diameter for secure installation
• 25.400 mm bore size for optimal hydraulic pressure
• Two ports with 1/2"-20 and 9/16"-18 thread sizes for compatibility
• Compatible with Chevrolet C1500, GMC K1500, R10 Suburban, and R1500 Suburban

About the Raybestos Element3; New Product Line

The Element3; New line from Raybestos focuses on delivering reliable brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes precision engineering and material quality, such as the aluminum master cylinder body in part number MC39651, to provide consistent braking performance and durability for classic and late-model trucks.

Detailed Product Description and Specifications

This brake master cylinder features a 25.400 mm bore size, which is critical for maintaining proper hydraulic pressure in the brake system. The aluminum construction offers resistance to corrosion and heat, extending the service life of the component. It includes two mounting holes with a diameter of 0.423 inches, ensuring a secure and exact fit on the brake booster or firewall. The master cylinder has two ports: a primary port with 1/2"-20 thread and a secondary port with 9/16"-18 thread, designed to accommodate standard brake line fittings for Chevrolet and GMC trucks.

Common Applications and Problem Resolution

• Restores brake hydraulic pressure in Chevrolet C1500 and GMC K1500 trucks
• Replaces worn or leaking master cylinders in R10 and R1500 Suburban models
• Eliminates spongy or unresponsive brake pedal feel
• Prevents brake fluid leaks that can compromise braking safety
• Addresses master cylinder bore wear or internal seal failure

Installation Notes and Tips

Ensure the brake system is properly bled after installation to remove air and maintain brake responsiveness. Verify that the mounting holes align correctly with the vehicle’s brake booster or firewall. Use compatible brake lines with the specified port thread sizes (1/2"-20 and 9/16"-18) to avoid leaks. Inspect all brake components during installation for wear or damage to ensure system integrity.

Quality Assurance and Warranty Information

Raybestos manufactures the MC39651 brake master cylinder to meet strict quality standards, using durable aluminum material and precise machining. While specific warranty details are not provided here, Raybestos products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.