Raybestos MC390986 Brake Master Cylinder

Reliable Brake Master Cylinder for GM Trucks and SUVs

The Raybestos Element3; New Brake Master Cylinder MC390986 is engineered to restore precise brake hydraulics in select Cadillac, Chevrolet, and GMC vehicles. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent braking performance for models like the Chevrolet Silverado 1500 and GMC Yukon XL 1500.

• Constructed from lightweight, corrosion-resistant aluminum
• Features a 1.250-inch bore size for optimal hydraulic pressure
• Includes two mounting holes with 0.433-inch diameter for secure installation
• Equipped with two ports, both with M12x1 thread size for compatibility
• Compatible with multiple GM full-size trucks and SUVs

About the Raybestos Element3; New Product Line

The Element3; New line by Raybestos focuses on delivering reliable brake hydraulics components that meet or exceed OEM standards. This brake master cylinder MC390986 is part of that line, offering precise engineering and material quality tailored for demanding applications in Cadillac Escalade and Chevrolet Avalanche models. The Element3; New series emphasizes durability and fitment accuracy to maintain vehicle safety and performance.

Detailed Product Description

This brake master cylinder MC390986 is crafted from aluminum, providing a balance of strength and corrosion resistance essential for brake hydraulics. The 1.250-inch bore size is designed to deliver consistent hydraulic pressure, ensuring responsive braking. With two mounting holes sized at 0.433 inches in diameter, installation aligns precisely with factory specifications. The master cylinder includes two ports, both threaded M12x1, facilitating secure brake line connections. This part is compatible with a range of GM vehicles including Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Suburban 1500, Tahoe, and GMC Sierra 1500, Yukon, Yukon XL 1500.

Common Applications and Issues Addressed

• Restores brake hydraulic pressure for improved pedal feel
• Replaces worn or leaking master cylinders causing brake fluid loss
• Eliminates spongy or unresponsive brake pedal issues
• Resolves brake system leaks at the master cylinder ports
• Ensures proper brake function in GM full-size trucks and SUVs

Installation Notes and Tips

• Verify compatibility with your specific make and model before installation
• Ensure brake fluid system is properly bled after installation to remove air
• Use correct torque specifications for mounting bolts and port fittings
• Inspect brake lines and fittings for wear or damage during replacement
• Follow manufacturer guidelines for brake system maintenance

Quality Assurance and Warranty

Raybestos manufactures the MC390986 brake master cylinder to meet stringent quality standards, using durable aluminum material and precise machining. The Element3; New product line is designed to provide reliable performance consistent with OEM requirements. Warranty coverage details should be confirmed with the product documentation or supplier, ensuring confidence in part longevity and function.