Centric 121.66038 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Chevrolet and GMC Vehicles

The Centric C-TEK Standard Disc Brake Rotor 121.66038 is engineered to provide consistent braking performance for select Chevrolet, GMC, Isuzu, and Oldsmobile models. Designed with precision, this vented rotor ensures effective heat dissipation and durability for vehicles like the Chevrolet Blazer and GMC Jimmy.

• Vented disc brake rotor with straight vane design for improved cooling
• Nominal thickness of 1.142 inches (29.000 mm) and discard thickness of 1.083 inches (27.500 mm)
• Overall height measures 2.146 inches (54.500 mm) for proper fitment
• Outside diameter of 10.760 inches (273.300 mm) compatible with specified models
• Floating disc mounting with 5 lug holes, each 0.512 inches (13.000 mm) in diameter
• Smooth surface type for consistent pad contact and braking efficiency
• Center hole diameter of 2.787 inches (70.800 mm) and mounting bolt hole circle diameter of 4.752 inches (120.700 mm)
• Weight approximately 15 lbs (6.82 kgs) for balanced performance

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers a reliable replacement option designed to meet or exceed OEM specifications. This product line focuses on delivering rotors with precise dimensions and quality materials to ensure proper fit and function. The 121.66038 rotor exemplifies this approach by providing a vented design that supports heat dissipation and consistent braking performance for compatible Chevrolet, GMC, Isuzu, and Oldsmobile vehicles.

Product Details and Specifications

This Centric disc brake rotor features a vented construction with straight vanes that help maintain optimal operating temperatures during braking. The smooth surface finish promotes even pad wear and reduces noise. With a floating disc mounting style and five lug holes, this rotor is engineered for secure installation on models such as the Chevrolet S10 and GMC Sonoma. The rotor’s dimensions, including a 10.760-inch outside diameter and 2.146-inch overall height, ensure compatibility with the specified vehicles. Note that this rotor does not include an ABS tone ring or bearings.

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 noise or vibration issues related to uneven rotor surfaces
• Upgrading to a vented rotor for improved heat dissipation in daily driving
• Ensuring proper fitment on Chevrolet Blazer, GMC Jimmy, and related models

Installation Notes and Tips

• Verify rotor thickness before installation; discard thickness is 1.083 inches (27.500 mm)
• Ensure mounting surfaces are clean and free of debris for proper rotor seating
• Use correct torque specifications on lug nuts to avoid rotor warping
• Check compatibility with vehicle ABS systems as this rotor does not include an ABS tone ring
• Inspect brake pads for wear and replace if necessary during rotor installation

Quality Assurance and Warranty

Centric manufactures the C-TEK Standard Disc Brake Rotors to meet stringent quality standards, ensuring durability and reliable braking performance. While specific warranty details for part number 121.66038 are not provided here, Centric typically offers coverage against defects in materials and workmanship. It is recommended to consult the product documentation or Centric directly for warranty information related to this rotor.