Raybestos MC31999 Brake Master Cylinder

Reliable Brake Master Cylinder for Classic GM Vehicles

The Raybestos Element3; New Brake Master Cylinder MC31999 is engineered to restore precise brake hydraulics in select Cadillac, Chevrolet, Oldsmobile, and Pontiac models. Designed with durable iron construction and exact fitment specifications, this master cylinder ensures consistent braking performance for vintage and classic vehicles.

• Constructed from robust iron material for durability
• Features 4 mounting holes with 0.406 inch diameter for secure installation
• 1.000 inch bore size optimized for proper hydraulic pressure
• Includes 2 ports with 7/16"-24 primary port thread for compatibility
• Compatible with multiple GM models including Bel Air, Bonneville, Eldorado, and Impala

Detailed Specifications and Product Line Information

This brake master cylinder, part number MC31999, is part of the Raybestos Element3; New product line, which focuses on delivering reliable brake hydraulics components with precise engineering and quality materials. The iron master cylinder body provides strength and resistance to wear, while the 1.000 inch bore size ensures proper fluid displacement for effective braking. The 4 mounting holes, each with a 0.406 inch diameter, allow for a secure and stable fit on compatible vehicles. With 2 ports and a primary port thread size of 7/16"-24, this master cylinder is designed to integrate seamlessly with the brake lines of classic GM cars and trucks.

Compatible Vehicles and Applications

This Raybestos brake master cylinder MC31999 is compatible with a range of classic GM vehicles, including:

• Cadillac DeVille and Eldorado models
• Chevrolet Bel Air, Impala, and El Camino
• Oldsmobile Bonneville and Cutlass
• Pontiac Catalina, Parisienne, and Tempest
• Commercial Chassis platforms from the same era

Common Issues Addressed by This Master Cylinder

• Brake pedal sinking or sponginess due to internal leaks
• Loss of hydraulic pressure affecting braking efficiency
• Brake fluid contamination or cylinder bore corrosion
• Inconsistent brake response in vintage GM vehicles
• Replacement of worn or damaged original master cylinders

Installation Notes and Tips

• Ensure the mounting holes align precisely with the vehicle’s brake booster or firewall
• Use proper thread sealant on the 7/16"-24 primary port to prevent leaks
• Bleed the brake system thoroughly after installation to remove air
• Verify bore size compatibility with existing brake components
• Consult vehicle-specific service manuals for torque specifications

Quality Assurance and Warranty

Raybestos Element3; New brake master cylinders are manufactured to meet or exceed OEM standards for fit, form, and function. Each unit undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details for part number MC31999 should be confirmed at the point of purchase, Raybestos typically offers coverage against defects in materials and workmanship.