Centric 121.66066 Disc Brake Rotor - Rear

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

The Centric C-TEK Standard Disc Brake Rotor 121.66066 offers dependable braking performance for select Buick, Chevrolet, Pontiac, and Saturn models. Designed to meet OEM specifications, this solid rotor ensures consistent stopping power and durability for vehicles like the Montana, Relay, Terraza, and Uplander.

• Part Number: 121.66066
• Compatible with Buick Montana, Chevrolet Uplander, Pontiac Montana SV6, Saturn Relay, and Terraza
• Solid disc brake rotor with smooth surface finish
• Outside diameter: 11.807 inches (299.9 mm)
• Nominal thickness: 0.472 inches (12.0 mm); discard thickness: 0.413 inches (10.5 mm)
• Overall height: 1.264 inches (32.1 mm)
• Center hole diameter: 2.780 inches (70.6 mm)
• Mounting bolt hole circle diameter: 4.5 inches (114.3 mm) with 6 lug holes
• Floating disc mounting design
• Weight approximately 13.15 lbs (5.98 kgs)
• ABS tone ring not included

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric is engineered to provide reliable, OEM-quality replacement rotors for a variety of vehicles. These rotors feature a solid design with a smooth surface type, optimized for consistent brake pad contact and wear. The 121.66066 rotor maintains strict adherence to factory dimensions and specifications, ensuring proper fitment and performance for compatible Buick, Chevrolet, Pontiac, and Saturn models.

Product Details and Specifications

This Centric disc brake rotor is a solid type rotor with a smooth surface, designed for vehicles requiring a floating disc mounting system. The rotor measures 11.807 inches in outside diameter and has a nominal thickness of 0.472 inches, with a discard thickness of 0.413 inches to indicate when replacement is necessary. The overall height is 1.264 inches, and it features a center hole diameter of 2.780 inches. The mounting bolt hole circle diameter is 4.5 inches, accommodating 6 lug holes each measuring 0.563 inches in diameter. This rotor does not include an ABS tone ring or bearings, so those components must be sourced separately if needed.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Restores proper braking performance on Buick Montana and Chevrolet Uplander
• Eliminates noise and vibration from uneven rotor surfaces
• Addresses rotor thickness below manufacturer discard limits
• Improves brake pad contact and reduces uneven wear

Installation Notes and Tips

• Ensure rotor thickness is measured before installation to confirm discard limits
• Clean rotor surface and hub mounting area to prevent runout
• Use proper torque specifications for lug nuts to avoid rotor warping
• Check compatibility with vehicle ABS system as this rotor does not include an ABS tone ring
• 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 or exceed OEM standards for fit, form, and function. Each rotor undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Refer to Centric's official documentation for complete warranty information.