Centric 121.66070 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Buick, Chevrolet, GMC, and Saturn

The Centric C-TEK Standard Disc Brake Rotor 121.66070 is engineered to meet the braking demands of popular SUVs like the Buick Enclave, Chevrolet Traverse, GMC Acadia, and Saturn Outlook. Designed for consistent performance, this vented rotor ensures effective heat dissipation and smooth braking under various driving conditions.

• Part Number: 121.66070
• Vented disc brake rotor with straight vane design for improved cooling
• Outside diameter: 13.020 inches (330.7 mm)
• Nominal thickness: 0.787 inches (20.0 mm); discard thickness: 0.724 inches (18.4 mm)
• Overall height: 2.106 inches (53.5 mm)
• Center hole diameter: 2.972 inches (75.5 mm)
• Mounting bolt hole circle diameter: 5.197 inches (132.0 mm) with 6 lug holes
• Weight: 18.2 lbs (8.27 kgs)
• Surface type: smooth, no ABS tone ring included

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 replacement brake components. These rotors are manufactured to meet or exceed OEM specifications, providing reliable braking performance for vehicles such as the Buick Enclave, Chevrolet Traverse, GMC Acadia, and Saturn Outlook. The vented design with straight vanes helps maintain optimal rotor temperature during braking, reducing the risk of warping and extending rotor life.

Technical Details and Compatibility

This disc brake rotor is specifically designed for use on select models from Buick, Chevrolet, GMC, and Saturn. The 6-lug pattern with a 5.197-inch bolt circle diameter and 0.638-inch lug hole diameter ensures proper fitment on vehicles like the Acadia Limited and Outlook. The rotor’s nominal thickness of 0.787 inches and discard thickness of 0.724 inches provide clear service limits for maintenance checks. The smooth surface type supports consistent pad contact and braking feel.

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
• Eliminating noise and vibration from uneven rotor surfaces
• Improving heat dissipation in vehicles used for towing or heavy loads
• Restoring proper rotor dimensions for safe and reliable braking

Installation Notes and Tips

Ensure the rotor is compatible with your vehicle’s make and model before installation. Clean the rotor surface to remove any protective coatings or debris. Verify that the mounting bolt hole circle diameter and lug hole quantity match your vehicle’s hub assembly. Since this rotor does not include bearings or an ABS tone ring, reuse existing components or replace separately if needed. Proper torque specifications should be followed when securing the rotor to avoid warping.

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 quality control inspections to ensure dimensional accuracy and material integrity. While specific warranty details may vary, Centric typically offers coverage against defects in materials and workmanship, providing confidence in the durability and performance of part number 121.66070.