Centric 130.66011 Brake Master Cylinder

Overview of Centric Premium Brake Master Cylinder 130.66011

The Centric Premium Brake Master Cylinder 130.66011 is engineered for reliable brake hydraulics performance in select Chevrolet, GMC, and Oldsmobile vehicles. Designed to meet OEM specifications, this master cylinder ensures consistent braking response for models like the Chevrolet Blazer, GMC Jimmy, and Oldsmobile S15.

• Durable cast iron master cylinder body
• Plastic single reservoir with removable style
• Includes master cylinder cap and reservoir
• Two mounting holes for secure installation
• Primary and secondary outlet thread sizes: 1/2"-20 and 9/16"-18 inverted flare
• Stepped bore design with primary bore diameter of 1.417 inches
• Compatible with Chevrolet Blazer, GMC Bravada, and Oldsmobile S10 models

Product Line Details: Centric Premium Brake Master Cylinders

The Centric Premium Brake Master Cylinders line focuses on delivering high-quality brake hydraulic components that match or exceed original equipment standards. This product line emphasizes durability and precise fitment, making it suitable for vehicles requiring dependable brake master cylinders. The 130.66011 part benefits from this line’s attention to material quality and design, including a cast iron body and a plastic reservoir that is removable for maintenance.

Technical Description and Specifications

This brake master cylinder features a cast iron construction for strength and longevity, paired with a plastic reservoir designed for easy fluid inspection and replacement. The single reservoir style simplifies the brake fluid system while maintaining proper fluid levels. It includes a master cylinder cap but does not come with mounting hardware, push rod, brake booster, bleeder hoses, or mounting bracket. The unit has two mounting holes and two ports with inverted flare threads: a primary outlet thread size of 1/2"-20 and a secondary outlet thread size of 9/16"-18, both designed for secure brake line connections. The stepped bore design includes a primary bore diameter of 1.417 inches and a secondary bore diameter of 0.929 inches, ensuring proper hydraulic pressure distribution.

Compatible Vehicles and Applications

• Chevrolet Blazer
• GMC Bravada
• Oldsmobile S10, S15, and S15 Jimmy
• GMC Jimmy and Sonoma
• Chevrolet S10 Blazer

This master cylinder is intended for brake system repairs or replacements where the original master cylinder has failed or is showing signs of wear.

Common Issues Addressed by This Master Cylinder

• Brake pedal sinking or sponginess due to internal leaks
• Brake fluid contamination or reservoir damage
• Loss of hydraulic pressure affecting braking performance
• Worn or damaged bore causing inconsistent brake response
• Corrosion or failure of original cast iron master cylinder

Installation Notes and Tips

Installation requires removal of the old master cylinder and proper bleeding of the brake system to remove air. Note that mounting hardware, push rod, brake booster, and bleeder hoses are not included and must be reused or sourced separately. Ensure the inverted flare thread connections on the primary and secondary outlets are properly tightened to prevent leaks. The removable reservoir style allows for easier maintenance and fluid replacement during installation.

Quality Assurance and Warranty

Centric Premium Brake Master Cylinders are manufactured to meet strict quality standards for durability and performance. The cast iron construction and precise bore dimensions contribute to long service life. While specific warranty details are not provided here, Centric products typically come with a limited warranty against defects in materials and workmanship. Verify warranty terms with the product documentation or supplier.