Centric 121.66075 Disc Brake Rotor - Front or Rear

Reliable Disc Brake Rotor for Chevrolet and GMC Trucks

The Centric C-TEK Standard Disc Brake Rotor 121.66075 is engineered for heavy-duty performance on Chevrolet Silverado 3500 and GMC Sierra 3500 HD models. Designed to meet OEM specifications, this vented rotor ensures consistent braking under demanding conditions.

• Vented disc brake rotor with straight vane design for effective heat dissipation
• Nominal thickness of 1.575 inches (40.000 mm) and discard thickness of 1.496 inches (38.000 mm)
• Outside diameter measures 13.976 inches (355.000 mm) for precise fitment
• Overall height of 5.906 inches (150.000 mm) with a center hole diameter of 5.118 inches (130.000 mm)
• Eight stud/lug holes with a diameter of 0.646 inches (16.400 mm) and mounting bolt hole circle diameter of 7.087 inches (180.000 mm)
• Solid mounting with floating/dih disc mounting type and no ABS tone ring included
• Weight approximately 45.95 lbs (20.84 kgs) for balanced performance

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors manufactured to meet or exceed OEM standards, providing reliable braking performance for heavy-duty trucks. This product line focuses on delivering rotors with precise dimensions and vented designs to maintain optimal temperature control and durability, making it suitable for demanding applications such as the Chevrolet Silverado 3500 and GMC Sierra 3500 HD.

Product Details and Specifications

This Centric disc brake rotor features a vented design with straight vanes that promote efficient heat dissipation, reducing the risk of brake fade during extended use. The rotor's nominal thickness is 1.575 inches (40.000 mm), with a discard thickness of 1.496 inches (38.000 mm), ensuring a clear threshold for replacement. The outside diameter of 13.976 inches (355.000 mm) and overall height of 5.906 inches (150.000 mm) provide a precise fit for compatible Chevrolet and GMC heavy-duty trucks. The rotor includes eight stud/lug holes with a diameter of 0.646 inches (16.400 mm) and a mounting bolt hole circle diameter of 7.087 inches (180.000 mm), designed for secure installation. Note that this rotor does not include an ABS tone ring or bearings.

Compatible Vehicles and Common Applications

• Replacement rotor for Chevrolet Silverado 3500 and Silverado 3500 HD models
• Suitable for GMC Sierra 3500 HD heavy-duty trucks
• Addresses issues such as brake rotor warping, uneven wear, and reduced braking efficiency
• Ideal for restoring braking performance after rotor surface damage or thickness wear
• Helps maintain consistent braking under heavy load and towing conditions

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (1.496 inches) before installation
• Clean mounting surfaces to prevent rotor runout and vibration
• Use proper torque specifications on lug nuts to avoid rotor damage
• Check compatibility with existing brake pads and hardware
• Inspect caliper and wheel bearings during installation for optimal performance

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM quality standards, ensuring reliable performance and durability. While specific warranty details for part number 121.66075 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Always refer to the manufacturer’s warranty documentation for complete information.