Raybestos MC391538 Brake Master Cylinder

Reliable Brake Master Cylinder Replacement

The Raybestos Element3; New Brake Master Cylinder MC391538 offers precise hydraulic control for your vehicle's braking system. Designed with a 1.375-inch bore diameter, this master cylinder ensures consistent brake fluid pressure for safe and effective stopping power.

• Master cylinder bore diameter: 1.375 inches
• Brake booster not included
• No reservoir, dust boot, or mounting hardware included
• Part number MC391538 for accurate identification
• Compatible with specific vehicle makes and models requiring this master cylinder size

About the Raybestos Element3; New Product Line

The Element3; New line from Raybestos focuses on delivering dependable brake hydraulics components engineered to meet or exceed OEM specifications. This product line emphasizes precision manufacturing and material quality, providing a solid foundation for brake system repairs and maintenance. The MC391538 master cylinder is part of this line, offering a direct replacement option for vehicles requiring a 1.375-inch bore diameter master cylinder without additional components like boosters or reservoirs.

Product Details and Specifications

This brake master cylinder features a 1.375-inch bore diameter, which is critical for maintaining proper hydraulic pressure in the brake system. It does not include a brake booster, reservoir, dust boot, push rod, bleeder hoses, sensor, or mounting bracket, so these components must be sourced separately if needed. The absence of these parts makes the MC391538 suitable for applications where the existing hardware remains in good condition or when upgrading specific components individually.

Common Applications and Problem Resolution

• Restores brake fluid pressure in vehicles experiencing spongy or unresponsive brakes
• Replaces worn or leaking master cylinders causing brake fluid loss
• Addresses brake pedal sinking or failure to maintain pressure
• Solves issues related to inconsistent brake booster engagement when used with compatible systems
• Supports brake system rebuilds requiring a 1.375-inch bore diameter master cylinder

Installation Notes and Tips

When installing the Raybestos MC391538 master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Since this part does not include a reservoir or booster, verify that existing components are compatible and in good condition. Use the correct brake fluid type recommended by the vehicle manufacturer and follow torque specifications for mounting bolts. Proper installation will help maintain consistent brake pedal feel and system performance.

Quality Assurance and Warranty Information

Raybestos manufactures the Element3; New line with attention to quality and durability, meeting industry standards for brake hydraulics. While specific warranty details for part number MC391538 should be confirmed at the point of purchase, Raybestos typically offers limited warranties covering defects in materials and workmanship. This ensures confidence in the reliability of the brake master cylinder for your vehicle's braking needs.