Raybestos MC391257 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford E-350 Super Duty

The Raybestos Element3; New Brake Master Cylinder MC391257 is engineered to restore precise brake hydraulics for your Ford E-350 Super Duty. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent braking performance.

• Compatible with Ford E-350 Super Duty models
• Constructed from lightweight, corrosion-resistant aluminum
• Features a 1.313-inch bore size for optimal hydraulic pressure
• Includes two mounting holes with 0.413-inch diameter for secure installation
• Equipped with two ports: primary port thread M14x1.5 and secondary port thread M12x1

About the Raybestos Element3; New Product Line

The Element3; New line from Raybestos focuses on delivering reliable brake hydraulics components with precise engineering and durable materials. This brake master cylinder MC391257 is part of that line, offering a balance of performance and longevity tailored for heavy-duty vehicles like the Ford E-350 Super Duty.

Detailed Product Description

This brake master cylinder is crafted from aluminum, providing a lightweight yet robust solution for your vehicle's braking system. The 1.313-inch bore size is designed to maintain proper hydraulic pressure, ensuring responsive brake pedal feel. With two mounting holes sized at 0.413 inches in diameter, installation is straightforward and secure. The master cylinder includes two ports, with the primary port threaded M14x1.5 and the secondary port threaded M12x1, compatible with standard brake line fittings on the Ford E-350 Super Duty.

Common Applications and Issues Addressed

• Restores brake hydraulic pressure for Ford E-350 Super Duty
• Replaces worn or leaking master cylinders causing brake fluid loss
• Solves spongy or unresponsive brake pedal issues
• Addresses internal seal failures within the master cylinder
• Improves overall brake system reliability and safety

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Verify that the mounting holes align correctly with the existing brake booster or firewall mounts. Use compatible brake lines with M14x1.5 and M12x1 thread fittings to avoid leaks. After installation, bleed the brake system thoroughly to remove air and restore proper hydraulic function.

Quality Assurance and Warranty

Raybestos manufactures the MC391257 brake master cylinder to meet or exceed OEM specifications. The aluminum construction resists corrosion and wear, contributing to long service life. While specific warranty details may vary, Raybestos products typically include coverage against defects in materials and workmanship. Consult product documentation for exact warranty terms.