Raybestos MC391178 Brake Master Cylinder

Overview of Raybestos MC391178 Brake Master Cylinder

The Raybestos Element3; New Brake Master Cylinder MC391178 is engineered for reliable brake hydraulics performance. Designed specifically for Chevrolet Cobalt and Pontiac G5 models, this master cylinder ensures precise brake fluid control and consistent stopping power.

• Constructed from durable aluminum for corrosion resistance
• Two mounting holes with 0.354-inch diameter for secure installation
• Bore size of 0.875 inches for optimal hydraulic pressure
• Equipped with two ports featuring M10x1 and M12x1 thread sizes
• Compatible with Chevrolet Cobalt and Pontiac G5 brake systems

Detailed Product Description

The Raybestos MC391178 brake master cylinder is a critical component in the brake hydraulics system, responsible for converting pedal force into hydraulic pressure. Made from aluminum, this master cylinder offers a balance of strength and lightweight design, reducing corrosion risks common in brake components. It features two mounting holes with a precise diameter of 0.354 inches, ensuring a secure fit on compatible vehicles. The bore size of 0.875 inches is designed to deliver consistent fluid displacement, which is essential for maintaining brake responsiveness. Additionally, the master cylinder includes two ports with primary and secondary thread sizes of M10x1 and M12x1 respectively, allowing for proper brake line connections.

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, which is evident in the MC391178 master cylinder’s aluminum construction and exacting port thread standards. Element3; New parts are designed to integrate seamlessly with specific vehicle models, such as the Chevrolet Cobalt and Pontiac G5, providing dependable brake system performance.

Applications and Problem Solving

• Replaces worn or leaking brake master cylinders on Chevrolet Cobalt and Pontiac G5
• Addresses issues with inconsistent brake pedal feel or sponginess
• Solves brake fluid leakage problems due to damaged ports or seals
• Restores proper hydraulic pressure for improved braking response
• Prevents corrosion-related failures in brake hydraulics

Installation Notes and Tips

• Ensure compatibility with Chevrolet Cobalt and Pontiac G5 models before installation
• Verify mounting hole alignment and diameter (0.354 inches) for proper fit
• Use correct brake line fittings matching M10x1 and M12x1 thread sizes
• Bleed the brake system thoroughly after installation to remove air
• Inspect related brake components for wear during replacement

Quality Assurance and Warranty

Raybestos manufactures the MC391178 brake master cylinder to meet stringent quality standards. The aluminum construction and precise machining contribute to long-term durability and reliable brake system operation. While specific warranty details are not provided here, Raybestos products typically come with manufacturer-backed warranties covering defects in materials and workmanship.