Centric 131.66046 Brake Master Cylinder

Reliable Brake Master Cylinder for Chevrolet and GMC Vehicles

The Centric C-TEK Standard Brake Master Cylinder 131.66046 is engineered to restore precise brake hydraulics for select Chevrolet and GMC models. Designed with durable aluminum and a plastic reservoir, this master cylinder ensures consistent braking performance for vehicles like the Silverado 1500 and Yukon XL 1500.

• Compatible with Chevrolet Avalanche 1500, Express 1500/2500, Savana 1500/2500, Sierra 1500, Silverado 1500, Suburban 1500, Tahoe, Yukon, and Yukon XL 1500
• Aluminum master cylinder body with a plastic, removable single reservoir
• Includes master cylinder cap; mounting hardware and brake booster not included
• Two mounting holes for secure installation
• Primary and secondary outlet thread size: 1/2"-20 inverted flare
• Bore diameter: 1.339 inches (34.000 mm) with a straight bore type

About the C-TEK Standard Brake Master Cylinder Line

The C-TEK Standard Brake Master Cylinder line by Centric focuses on delivering reliable, OEM-quality brake hydraulics components. This product line emphasizes precise fitment and durable materials, such as aluminum construction and plastic reservoirs, to meet the demands of daily driving and maintain brake system integrity. The 131.66046 part number is a direct replacement designed to match factory specifications for select Chevrolet and GMC trucks and SUVs.

Product Details and Specifications

This brake master cylinder features a single, removable plastic reservoir that simplifies maintenance and fluid inspection. The aluminum master cylinder body provides corrosion resistance and strength. It includes a master cylinder cap but does not come with mounting hardware, brake booster, push rod, or bleeder hoses, so these components must be sourced separately if needed. The unit has two mounting holes and two ports with 1/2"-20 inverted flare threads for both primary and secondary outlets, ensuring compatibility with factory brake lines. The bore diameter measures 1.339 inches (34.000 mm), with a straight bore design to maintain consistent hydraulic pressure.

Common Applications and Problem Resolution

• Restores proper brake pedal feel and hydraulic pressure in Chevrolet Silverado 1500 and GMC Sierra 1500
• Replaces leaking or damaged master cylinders in Chevrolet Tahoe and GMC Yukon models
• Solves brake fluid reservoir leaks or cracks in Chevrolet Express and GMC Savana vans
• Addresses inconsistent braking performance due to worn internal seals
• Eliminates brake pedal sinking or sponginess caused by master cylinder failure

Installation Notes and Tips

• Verify compatibility with your specific Chevrolet or GMC model before installation
• Ensure brake fluid system is properly bled after installation to remove air
• Use appropriate tools for mounting; mounting hardware is not included
• Inspect brake booster and push rod components separately as they are not included
• Handle the plastic reservoir carefully to avoid damage during installation

Quality Assurance and Warranty

Centric’s C-TEK Standard Brake Master Cylinder 131.66046 is manufactured to meet or exceed OEM standards for fit, form, and function. The aluminum construction and quality materials provide durability and corrosion resistance. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Consult product documentation or Centric directly for warranty terms.