Centric 130.66009 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet and GMC Trucks

The Centric Premium Brake Master Cylinder 130.66009 is engineered for dependable brake performance in Chevrolet C10, C1500, GMC R10, and R1500 models. Designed with precision, this master cylinder ensures consistent hydraulic pressure for safe and effective braking.

• Durable cast iron master cylinder body
• Plastic single reservoir with removable style
• Includes master cylinder cap for secure sealing
• Two mounting holes for stable installation
• Stepped bore design with primary and secondary outlet threads
• Compatible with inverted flare brake lines (primary 1/2"-20, secondary 9/16"-18)

About Centric Premium Brake Master Cylinders

The Centric Premium Brake Master Cylinders line focuses on delivering high-quality brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes durability and precise fitment, making it suitable for restoration or maintenance of classic Chevrolet and GMC trucks. The 130.66009 part benefits from this engineering approach, providing reliable brake fluid control and long service life.

Product Details and Specifications

This brake master cylinder features a cast iron body for strength and longevity, paired with a plastic reservoir that is removable for easy maintenance. It includes a master cylinder cap but does not come with a brake booster, push rod, or mounting hardware. The unit has 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 (36 mm) and a secondary bore diameter of 1.000 inch (25.4 mm), ensuring proper hydraulic pressure distribution.

Common Applications and Problem Solving

• Restores proper brake fluid pressure in Chevrolet C10 and C1500 trucks
• Replaces worn or leaking master cylinders in GMC R10 and R1500 models
• Eliminates brake pedal sponginess caused by internal cylinder wear
• Addresses brake fluid reservoir leaks with a durable plastic reservoir
• Improves brake system reliability for vintage and classic truck restoration

Installation Notes and Tips

Ensure the brake system is fully depressurized before removal. This master cylinder requires two mounting holes for secure attachment but does not include mounting hardware. The plastic reservoir is removable, allowing for easier inspection and fluid replacement. Use compatible inverted flare brake lines with thread sizes 1/2"-20 (primary) and 9/16"-18 (secondary) for proper sealing. Bleeding the brake system after installation is necessary to remove air and ensure optimal brake performance.

Quality Assurance and Warranty

Centric Premium Brake Master Cylinders are manufactured to meet strict quality standards, using durable cast iron and corrosion-resistant materials. The 130.66009 part is designed for long-term reliability in Chevrolet and GMC truck brake systems. Warranty details are provided by Centric and typically cover defects in materials and workmanship under normal use conditions.