Centric 121.66030 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Chevrolet, Dodge, and GMC Vans

The Centric C-TEK Standard Disc Brake Rotor 121.66030 is engineered to meet the braking demands of Chevrolet G30, Dodge P30, P3500, and Ram 2500 Van models. Designed with precision, this vented rotor ensures consistent performance and durability under heavy-duty conditions.

• Vented disc brake rotor with smooth surface finish for effective heat dissipation
• Includes ABS tone ring for compatibility with anti-lock braking systems
• Outside diameter of 12.496 inches (317.4 mm) and nominal thickness of 1.535 inches (38.99 mm)
• Mounting bolt hole circle diameter of 6.5 inches (165.1 mm) with 8 stud/lug holes
• Stud thread diameter of 0.563 inches and bolt thread pitch of 18 mm
• Overall height measures 5.193 inches (131.9 mm) for proper fitment
• Weight approximately 41 lbs (18.64 kgs) for balanced rotor mass

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 specifications for standard braking applications. This product line focuses on delivering reliable stopping power with consistent rotor thickness and smooth surface finishes to reduce brake noise and vibration. The inclusion of an ABS tone ring ensures seamless integration with factory ABS systems, making it suitable for vehicles like the Chevrolet G30 and Dodge P3500 vans.

Technical Details and Specifications

This Centric rotor features a vented design with straight vanes to optimize airflow and heat dissipation during braking. The nominal thickness of 1.535 inches (38.99 mm) and discard thickness of 1.465 inches (37.21 mm) provide a clear service limit for rotor replacement. The rotor mounts to the hub and rotor center with an 8-lug hole pattern and a mounting bolt hole circle diameter of 6.5 inches (165.1 mm). The center hole diameter measures 4.587 inches (116.5 mm), ensuring proper alignment and fitment. The smooth surface type helps maintain consistent pad contact and braking performance.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Chevrolet G30 and Dodge P30 vans
• Restores braking efficiency on Ram 2500 Van models experiencing brake fade
• Addresses ABS sensor issues by including an integrated ABS tone ring
• Improves heat management in heavy-duty braking scenarios with vented rotor design
• Eliminates brake noise and vibration caused by uneven rotor surfaces

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 1.465 inches before installation. Clean the rotor surface to remove any protective coatings or debris. Verify the 8-lug hole pattern and mounting bolt hole circle diameter of 6.5 inches match the vehicle hub. The included ABS tone ring requires proper alignment with the vehicle’s ABS sensor for accurate operation. Bearings and seals are not included and should be inspected separately during installation.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. Each rotor undergoes strict quality control to ensure consistent thickness and surface finish. While specific warranty details are not provided, Centric products typically come with a limited warranty against defects in materials and workmanship when installed according to manufacturer guidelines.