Centric 121.66031 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Chevrolet and GMC P30 P3500

The Centric C-TEK Standard Disc Brake Rotor 121.66031 is engineered to meet the braking demands of Chevrolet and GMC P30 and P3500 models. Designed with precision, this vented rotor ensures consistent performance and durability under various driving conditions.

• Compatible with Chevrolet and GMC P30 and P3500 vehicles
• Vented disc brake rotor design for improved heat dissipation
• Overall diameter of 13.85 inches (351.8 mm) for exact fitment
• Mounting bolt hole quantity: 5 with 0.657 inch (16.7 mm) diameter holes
• Nominal thickness of 1.437 inches (36.5 mm) and discard thickness of 1.366 inches (34.7 mm)
• Center hole diameter of 5 inches (127 mm) for proper hub alignment
• Smooth surface type for consistent pad contact
• Weight approximately 34.5 lbs (15.68 kgs) for balanced performance

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers a reliable and cost-effective solution for replacement rotors. This product line focuses on delivering rotors that meet or exceed OEM specifications, providing consistent braking performance and durability. The 121.66031 rotor is part of this line, featuring a vented design that helps reduce heat buildup and maintain braking efficiency for Chevrolet and GMC P30 and P3500 trucks.

Product Details and Specifications

This disc brake rotor features a vented design with straight vanes to enhance airflow and cooling during braking. The rotor's overall height measures 2.933 inches (74.5 mm), ensuring proper clearance and fit behind the hub. It mounts behind the hub with five bolt holes arranged on a 6.339 inch (161 mm) bolt circle diameter. The smooth surface finish promotes even brake pad wear and consistent stopping power. Note that this rotor does not include an ABS tone ring or bearings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Chevrolet and GMC P30 and P3500
• Addresses brake pulsation and vibration issues caused by rotor wear
• Improves heat dissipation to reduce brake fade during heavy use
• Restores proper rotor thickness for safe braking performance
• Eliminates uneven pad wear due to rotor surface imperfections

Installation Notes and Tips

Ensure the rotor mounting surface and hub are clean and free of debris before installation. Verify the rotor thickness is within nominal specifications and above discard thickness limits. Use proper torque specifications for the five mounting bolts to secure the rotor behind the hub. Since this rotor does not include bearings or an ABS tone ring, reuse existing components or replace separately as needed. It is recommended to replace brake pads simultaneously for optimal braking performance.

Quality Assurance and Warranty

Centric's C-TEK Standard Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. Each rotor undergoes strict quality control to ensure durability and consistent braking performance. While specific warranty details are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Consult product documentation or Centric directly for warranty terms related to part number 121.66031.