Centric 121.66041 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Chevrolet and GMC Trucks

The Centric C-TEK Standard Disc Brake Rotor 121.66041 is engineered for dependable braking performance on select Chevrolet and GMC models. Designed to meet OEM specifications, this vented rotor ensures consistent heat dissipation and smooth braking for vehicles like the Silverado 1500 and Yukon XL 1500.

• Vented disc brake rotor with straight vane design for effective cooling
• Nominal thickness of 0.787 inches (20.000 mm) with discard thickness at 0.728 inches (18.500 mm)
• Overall height of 3.358 inches (85.300 mm) and outside diameter of 12.795 inches (325.000 mm)
• 6 lug holes with a bolt circle diameter of 5.500 inches (139.700 mm)
• Center hole diameter of 3.098 inches (78.700 mm) for precise fitment
• Solid smooth surface type for consistent pad contact
• Weight approximately 19.25 lbs (8.75 kgs) for balanced performance

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors manufactured to meet or exceed OEM standards, providing reliable braking performance for daily driving and moderate-duty applications. This product line focuses on delivering rotors with precise dimensions and quality materials, ensuring compatibility and durability for Chevrolet and GMC trucks and SUVs.

Product Details and Specifications

This Centric disc brake rotor 121.66041 features a vented design with straight vanes that promote efficient heat dissipation, reducing the risk of brake fade during extended use. The rotor’s nominal thickness of 0.787 inches (20.000 mm) and discard thickness of 0.728 inches (18.500 mm) provide clear service limits for maintenance. With an outside diameter of 12.795 inches (325.000 mm) and an overall height of 3.358 inches (85.300 mm), this rotor fits specific Chevrolet and GMC models requiring these dimensions. The rotor includes six lug holes with a 5.500-inch (139.700 mm) bolt circle diameter and a center hole diameter of 3.098 inches (78.700 mm), ensuring proper alignment and mounting. The smooth surface type supports consistent brake pad contact for stable braking performance.

Compatible Vehicles and Applications

• Chevrolet Astro, Avalanche 1500, Safari
• GMC Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD
• Chevrolet Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD
• Chevrolet Suburban 1500, Tahoe
• GMC Yukon, Yukon XL 1500

Common Issues Addressed by This Rotor

• Brake rotor warping causing vibration during braking
• Reduced braking efficiency due to worn or thin rotors
• Overheating and brake fade from insufficient heat dissipation
• Uneven brake pad wear linked to rotor surface irregularities
• Noise and pulsation caused by damaged or out-of-spec rotors

Installation Notes and Tips

Ensure the rotor surface is clean and free of rust or debris before installation. Verify the rotor thickness is above the discard limit of 0.728 inches (18.500 mm) to maintain safe braking performance. Use proper torque specifications on lug nuts to avoid rotor distortion. This rotor does not include bearings or an ABS tone ring, so confirm compatibility with your vehicle’s braking system. It is recommended to replace brake pads simultaneously for optimal results.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet OEM quality standards, providing reliable performance and durability. While specific warranty details for part number 121.66041 should be confirmed with the supplier, Centric typically offers coverage against defects in materials and workmanship to ensure customer confidence.