Raybestos MC391082 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet and GMC Trucks

The Raybestos Element3; New Brake Master Cylinder MC391082 is engineered to restore precise brake hydraulics in heavy-duty Chevrolet and GMC vehicles. Designed specifically for models like the Silverado 2500 HD and Sierra 3500 HD, this master cylinder ensures consistent brake performance under demanding conditions.

• Constructed from durable aluminum for corrosion resistance and longevity
• Features a 37.000 mm bore size for optimal hydraulic pressure
• Includes 2 mounting holes with a diameter of 0.413 inches for secure installation
• Equipped with 2 ports, both with M12x1 thread size for compatibility with OEM brake lines
• Compatible with Chevrolet Express 2500/3500, GMC Savana 2500/3500, Sierra 2500 HD/3500 HD, Silverado 2500 HD/3500 Classic/3500 HD, Suburban 2500, and Yukon XL 2500

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 brake master cylinder MC391082 is part of that line, offering precise engineering and material quality designed to maintain brake system integrity in heavy-duty trucks and SUVs.

Technical Details and Specifications

This brake master cylinder is made from aluminum, providing a balance of strength and corrosion resistance essential for brake hydraulics. The 37.000 mm bore size is calibrated to deliver the correct hydraulic pressure for the brake system. It features two mounting holes, each with a diameter of 0.413 inches, ensuring a secure fit. The two ports, both threaded M12x1, allow for straightforward connection to brake lines, maintaining system integrity and preventing leaks.

Common Applications and Problem Solving

• Restores brake pressure in Chevrolet Silverado 2500 HD and GMC Sierra 3500 HD models
• Replaces worn or leaking master cylinders in Chevrolet Express and GMC Savana vans
• Addresses brake pedal sinking or sponginess in Suburban 2500 and Yukon XL 2500
• Fixes hydraulic fluid leaks caused by damaged or corroded master cylinders
• Improves overall brake system responsiveness and safety

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Carefully disconnect brake lines from the old master cylinder, taking care to avoid fluid spills. Verify that the mounting holes align correctly with the vehicle’s brake booster or firewall. Use proper torque specifications for mounting bolts and port fittings to prevent leaks. Bleed the brake system thoroughly after installation to remove air and restore proper brake function.

Quality Assurance and Warranty

Raybestos Element3; New brake master cylinders are manufactured to meet strict quality standards, ensuring durability and reliable performance. This part number MC391082 undergoes rigorous testing to comply with OEM requirements. Warranty coverage details should be confirmed with the product documentation or supplier.