Raybestos MC391287 Brake Master Cylinder

Overview of Raybestos Element3; New Brake Master Cylinder

The Raybestos Element3; New Brake Master Cylinder MC391287 is designed specifically for Kia Optima models, providing reliable brake hydraulics performance. Crafted from durable aluminum, this master cylinder ensures consistent braking pressure and long-lasting operation.

• Compatible with Kia Optima vehicles
• Constructed from lightweight aluminum material
• Two mounting holes with 0.335-inch diameter for secure installation
• Bore size of 0.938 inches for precise hydraulic control
• Equipped with four ports featuring M10x1 thread size for primary and secondary connections

Detailed Product Features and Specifications

This Raybestos brake master cylinder (part number MC391287) is engineered with a 0.938-inch bore size to maintain optimal hydraulic pressure within the brake system. The aluminum construction offers corrosion resistance and reduces overall weight compared to traditional cast iron units. It includes two mounting holes, each with a diameter of 0.335 inches, ensuring a secure fit on the Kia Optima brake assembly. The master cylinder features four ports, with both primary and secondary ports threaded at M10x1, allowing for proper brake line connections and fluid flow management.

About the 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 material quality and precise engineering to support consistent brake system performance. The MC391287 master cylinder is part of this line, offering a balance of durability and fitment accuracy for Kia Optima vehicles.

Common Applications and Problem Resolution

• Replacement for worn or leaking brake master cylinders on Kia Optima
• Restores proper brake pedal feel and hydraulic pressure
• Addresses brake fluid leaks caused by damaged seals or corrosion
• Improves brake system responsiveness and safety
• Solves issues related to inconsistent brake pressure or pedal sinking

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Verify that the mounting holes align correctly with the brake booster or firewall on the Kia Optima. Use proper torque specifications for mounting bolts to avoid damage. Bleed the brake system thoroughly after installation to remove air and ensure optimal hydraulic function. Inspect all brake lines and fittings for compatibility with the M10x1 threaded ports.

Quality Assurance and Warranty Information

Raybestos manufactures the MC391287 brake master cylinder to meet stringent quality standards. The aluminum construction and precise machining contribute to reliable performance and durability. While specific warranty details may vary, Raybestos products typically include coverage against manufacturing defects. Consult product documentation or authorized sources for exact warranty terms.