Centric 121.66063 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Buick, Chevrolet, GMC, and Isuzu Vehicles

The Centric C-TEK Standard Disc Brake Rotor 121.66063 is engineered to provide consistent braking performance for select Buick, Chevrolet, GMC, and Isuzu models. Designed with precision, this vented rotor ensures effective heat dissipation and durability for vehicles like the Trailblazer, Envoy, and Ascender.

• Part Number: 121.66063
• Vented disc brake rotor with straight vane design
• Outside diameter: 11.890 inches (302.0 mm)
• Nominal thickness: 1.146 inches (29.1 mm)
• Discard thickness: 1.083 inches (27.5 mm)
• Overall height: 2.154 inches (54.7 mm)
• Center hole diameter: 3.118 inches (79.2 mm)
• Mounting bolt hole circle diameter: 5.0 inches (127.0 mm)
• 6 stud/lug holes, each 0.520 inches (13.2 mm) in diameter
• Floating disc mounting with 2 miscellaneous holes
• Weight: approximately 19.9 lbs (9.05 kgs)
• Smooth surface type without ABS tone ring

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers reliable replacement rotors designed to meet or exceed OEM specifications. This product line focuses on providing solid and vented rotors with precise fitment and consistent performance. The 121.66063 rotor is a vented type with a straight vane design, optimized for heat dissipation and durability in daily driving conditions for compatible Buick, Chevrolet, GMC, and Isuzu vehicles.

Product Details and Specifications

This disc brake rotor features a vented design with straight vanes to improve airflow and reduce brake fade during extended use. The rotor’s nominal thickness of 1.146 inches (29.1 mm) and discard thickness of 1.083 inches (27.5 mm) ensure a clear service life indicator for safe replacement timing. The overall height of 2.154 inches (54.7 mm) and outside diameter of 11.890 inches (302.0 mm) provide proper fitment for models such as the Chevrolet Trailblazer and GMC Envoy. The rotor mounts using a floating disc mounting system with six lug holes and a 5.0-inch bolt circle diameter, matching factory specifications for secure installation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing rotor thickness below manufacturer discard limits
• Improving heat dissipation to reduce brake fade on SUVs like the Buick Rainier
• Restoring smooth braking performance on Chevrolet SSR and GMC Envoy
• Ensuring proper rotor fitment for Isuzu Ascender brake systems

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness
• Clean rotor surface to remove any protective coatings or debris prior to mounting
• Use proper torque specifications on lug nuts to avoid rotor warping
• Check compatibility with vehicle ABS systems; this rotor does not include an ABS tone ring
• Inspect brake pads and hardware during rotor replacement for optimal braking performance

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details for part number 121.66063 should be confirmed with the distributor or installer, Centric generally offers coverage against defects in materials and workmanship. This rotor is designed to provide reliable braking performance for compatible Buick, Chevrolet, GMC, and Isuzu models.