Centric 121.66023 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Chevrolet and GMC Trucks

The Centric C-TEK Standard Disc Brake Rotor 121.66023 is engineered for dependable braking performance on Chevrolet C35 and GMC C3500 trucks. Designed to meet OEM specifications, this vented rotor ensures consistent heat dissipation and smooth braking under demanding conditions.

• Compatible with Chevrolet C35 and GMC C3500 models
• Part number 121.66023 for precise fitment
• Vented rotor design with straight vane style for effective cooling
• Nominal thickness of 1.531 inches (38.900 mm) and discard thickness of 1.465 inches (37.210 mm)
• Overall diameter of 12.5 inches (317.5 mm) and overall height of 8.197 inches (208.2 mm)
• Eight stud/lug holes with 0.563 inch (14.3 mm) stud thread diameter
• Smooth surface type for consistent pad contact

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors designed to meet or exceed OEM standards for durability and performance. This product line focuses on providing vented rotors that improve heat dissipation and reduce brake fade, making them suitable for heavy-duty applications such as Chevrolet C35 and GMC C3500 trucks. The 121.66023 rotor is part of this line, ensuring reliable braking with precise fitment and consistent quality.

Product Details and Specifications

This Centric disc brake rotor features a vented design with straight vanes to enhance airflow and cooling during braking. The rotor has a nominal thickness of 1.531 inches (38.900 mm) and a discard thickness of 1.465 inches (37.210 mm), indicating when replacement is necessary to maintain safe braking performance. The overall diameter measures 12.5 inches (317.5 mm), and the rotor height is 8.197 inches (208.2 mm). It includes eight stud holes with a thread diameter of 0.563 inches (14.3 mm) and a bolt thread pitch of 18 mm, ensuring compatibility with the specified truck models. The smooth surface type promotes even pad wear and consistent braking feel. This rotor does not include an ABS tone ring or bearings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Chevrolet C35 and GMC C3500 trucks
• Addresses brake fade caused by overheating during heavy-duty use
• Resolves uneven braking or pulsation due to rotor thickness variation
• Improves braking performance after rotor surface damage or scoring
• Suitable for restoring OEM braking specifications on vented rotor setups

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean rotor surface to remove any protective coating or debris
• Check compatibility with existing hub and mounting hardware
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Inspect brake pads and replace if worn to ensure optimal rotor performance

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details for part number 121.66023 should be confirmed with the supplier, Centric typically offers coverage against defects in materials and workmanship. This rotor is engineered to provide consistent braking performance for Chevrolet C35 and GMC C3500 trucks when installed and maintained properly.