Centric 121.62190 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.62190

The Centric C-TEK Standard Disc Brake Rotor 121.62190 is engineered for reliable braking performance on Cadillac CT4 models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and durability for everyday driving conditions.

• Compatible with Cadillac CT4 vehicles
• Vented disc brake rotor design for improved cooling
• Nominal thickness of 0.906 inches (23.000 mm)
• Discard thickness at 0.787 inches (20.000 mm)
• Overall height of 1.890 inches (48.000 mm)
• Outside diameter measuring 12.402 inches (315.000 mm)
• Floating disc mounting for enhanced rotor alignment
• 5 stud/lug holes with 0.551 inch (14.000 mm) diameter
• Center hole diameter of 2.776 inches (70.500 mm)
• Mounting bolt hole circle diameter of 4.528 inches (115.000 mm)
• ABS tone ring not included

Product Line Details: C-TEK Standard Disc Brake Rotors

The C-TEK Standard Disc Brake Rotors line by Centric focuses on providing dependable, OE-quality replacement rotors. This product line emphasizes precise fitment and consistent performance, making it suitable for routine maintenance and brake system repairs on vehicles like the Cadillac CT4. The rotors feature vented construction to aid in heat management and a smooth surface finish to ensure proper pad contact and wear.

Technical Specifications and Features

This Centric rotor features a vented design that helps dissipate heat generated during braking, reducing the risk of brake fade. The nominal thickness of 0.906 inches (23.000 mm) ensures structural integrity, while the discard thickness of 0.787 inches (20.000 mm) indicates the minimum safe thickness before replacement is necessary. The overall height of 1.890 inches (48.000 mm) and outside diameter of 12.402 inches (315.000 mm) are engineered to match the original equipment specifications for the Cadillac CT4. The rotor mounts using a floating disc mounting system, which allows for slight movement to reduce stress and improve braking smoothness. It includes five stud/lug holes with a diameter of 0.551 inches (14.000 mm) arranged on a 4.528 inch (115.000 mm) bolt circle diameter, ensuring proper fitment on the vehicle hub. The center hole diameter of 2.776 inches (70.500 mm) aligns with the hub for secure installation. 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 rotor thickness below manufacturer specifications
• Improving heat dissipation to reduce brake fade during normal driving
• Restoring smooth braking performance on Cadillac CT4 models
• Resolving noise or vibration issues related to rotor surface wear

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it meets or exceeds the discard thickness of 0.787 inches (20.000 mm). Clean the rotor surface and hub mounting area to remove rust or debris for proper seating. Use the correct torque specifications for the 5 lug nuts on the 4.528 inch (115.000 mm) bolt circle. Since this rotor uses a floating disc mounting system, verify that the rotor moves slightly to accommodate thermal expansion. ABS tone ring and bearings are not included and should be reused or replaced separately if necessary.

Quality Assurance and Warranty

Centric manufactures the C-TEK Standard Disc Brake Rotors to meet or exceed OEM standards for fit, form, and function. While specific warranty details are not provided here, Centric products typically come with a limited warranty against defects in materials and workmanship. Always consult the product packaging or Centric’s official documentation for exact warranty terms.