Centric 121.66002 Disc Brake Rotor - Front

Overview of Centric C-TEK Standard Disc Brake Rotor 121.66002

The Centric C-TEK Standard Disc Brake Rotor 121.66002 is engineered for reliable braking performance on heavy-duty Chevrolet and GMC trucks and vans. Designed specifically for models like the Chevrolet C30, C3500, and GMC G30, P30, and R3500 series, this vented rotor ensures consistent heat dissipation and durability under demanding conditions.

• Vented disc brake rotor with smooth surface finish
• Nominal thickness of 1.535 inches (38.99 mm) and discard thickness of 1.465 inches (37.21 mm)
• Outside diameter measures 12.5 inches (317.5 mm)
• Eight stud/lug holes with 0.563 inch (14.3 mm) stud thread diameter
• Overall height of 5.169 inches (131.3 mm)
• Compatible with hub and rotor mounting
• Straight vane style for effective cooling
• Weight approximately 42.5 lbs (19.32 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers a balance of quality and value for professional and commercial vehicle applications. These rotors are designed to meet or exceed OEM specifications, providing consistent braking performance and durability. The 121.66002 rotor is part of this line, featuring vented construction and precise dimensions to fit specific Chevrolet and GMC heavy-duty truck models.

Detailed Product Description

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 smooth surface finish ensures optimal contact with brake pads, contributing to consistent stopping power. With a nominal thickness of 1.535 inches and a discard thickness of 1.465 inches, this rotor maintains structural integrity throughout its service life. The rotor’s 12.5-inch outside diameter and 8-lug hole configuration with a 0.563-inch stud thread diameter are tailored for Chevrolet C30, C3500, and GMC G30, P30, and R3500 models, ensuring proper fitment and reliable operation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing reduced braking efficiency due to rotor thickness below discard limits
• Resolving overheating issues from solid rotors by upgrading to vented design
• Eliminating noise and vibration caused by uneven rotor surfaces
• Maintaining safe braking performance on heavy-duty Chevrolet and GMC trucks and vans

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets nominal specifications
• Clean rotor surface to remove any protective coatings or debris prior to mounting
• Use proper torque specifications on the 8 lug nuts to avoid rotor warping
• Inspect related components such as bearings and seals (inner bearing #410.91035, outer bearing #415.66000) during installation
• Ensure compatibility with hub and rotor mounting system for secure fitment

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet stringent quality standards, ensuring durability and consistent performance. While specific warranty details for part number 121.66002 are not provided here, Centric typically offers coverage against defects in materials and workmanship. It is recommended to consult product documentation or Centric directly for warranty terms related to this rotor.