Raybestos MC39965 Brake Master Cylinder

Reliable Brake Master Cylinder for Geo and Isuzu Vehicles

The Raybestos Element3; New Brake Master Cylinder MC39965 is engineered to restore precise brake hydraulics for Geo Impulse, Isuzu Storm, and Stylus models. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent braking performance.

• Constructed from lightweight, corrosion-resistant aluminum
• Two mounting holes with 0.335-inch diameter for secure installation
• 0.875-inch bore size optimized for brake fluid pressure control
• Four ports with M10x1 thread size for primary and secondary brake lines
• Compatible with Geo Impulse, Isuzu Storm, and Stylus vehicles

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 specifications. This product line emphasizes precision engineering and material quality, such as the aluminum master cylinder body found in part number MC39965, to provide consistent brake system performance and durability.

Detailed Product Description

This brake master cylinder features a robust aluminum body that resists corrosion and heat, contributing to long service life. The 0.875-inch bore size is designed to maintain proper hydraulic pressure for effective braking response. With two mounting holes sized at 0.335 inches in diameter, installation is straightforward and secure. The master cylinder includes four ports, each threaded M10x1, accommodating both primary and secondary brake lines to ensure proper fluid distribution within the brake system.

Common Applications and Issues Addressed

• Restores brake fluid pressure in Geo Impulse, Isuzu Storm, and Stylus models
• Replaces worn or leaking master cylinders causing brake pedal sponginess
• Solves brake fluid leaks from damaged or corroded master cylinder bodies
• Addresses inconsistent braking performance due to internal seal failure
• Improves brake system reliability after component wear or damage

Installation Notes and Tips

Ensure the brake system is properly bled after installation to remove air and maintain hydraulic integrity. Verify mounting hole alignment with the vehicle’s firewall or mounting bracket using the 0.335-inch diameter holes. Use compatible brake fluid and inspect all connected brake lines for wear or damage during replacement. Follow manufacturer torque specifications for mounting bolts to avoid leaks or misalignment.

Quality Assurance and Warranty

Raybestos Element3; New brake master cylinders are manufactured to meet strict quality standards, ensuring reliable performance and durability. Part number MC39965 undergoes rigorous testing to comply with OEM fit and function requirements. Warranty coverage details should be confirmed with the product documentation or supplier.