Centric 121.45019 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Mazda and Mercury Vehicles

The Centric C-TEK Standard Disc Brake Rotor 121.45019 offers a precise fit and dependable braking performance for select Mazda and Mercury models. Designed to meet OEM specifications, this solid rotor ensures consistent stopping power and durability.

• Compatible with Mazda 323 and Mercury Capri, Tracer models
• Solid disc brake rotor with smooth surface finish
• Outside diameter: 8.740 inches (222.000 mm)
• Nominal thickness: 0.394 inches (10.000 mm); discard thickness: 0.315 inches (8.000 mm)
• Overall height: 2.610 inches (66.300 mm)
• Center hole diameter: 2.343 inches (59.500 mm)
• Mounting bolt hole circle diameter: 4.500 inches (114.300 mm) with 4 lug holes
• Weight approximately 10 lbs (4.550 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, direct replacement rotors that meet or exceed OEM standards. This product line focuses on delivering rotors with precise dimensions and quality materials to ensure proper fitment and consistent braking performance. The 121.45019 rotor is part of this line, offering a solid rotor design with a smooth surface ideal for everyday driving conditions on compatible Mazda and Mercury vehicles.

Product Details and Specifications

This Centric disc brake rotor features a solid construction with a smooth surface type, designed to provide stable braking without the complexity of vented rotors. The rotor measures 8.740 inches in outside diameter and has a nominal thickness of 0.394 inches, with a discard thickness of 0.315 inches, indicating when replacement is necessary. The overall height is 2.610 inches, and it includes a center hole diameter of 2.343 inches to ensure proper hub alignment. The mounting bolt hole circle diameter is 4.500 inches with four lug holes sized at 0.492 inches in diameter. This rotor does not include ABS tone rings or bearings, and studs are not included.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on Mazda 323 and Mercury Capri, Tracer
• Eliminates brake pulsation caused by uneven rotor surfaces
• Restores proper rotor thickness for safe braking performance
• Addresses squealing or grinding noises due to rotor wear
• Improves braking consistency and pedal feel

Installation Notes and Tips

Ensure the rotor surface is clean and free of rust or debris before installation. Verify the rotor thickness to confirm it meets minimum specifications. This rotor mounts to the hub and requires proper torque on lug nuts to avoid warping. Note that this part does not include bearings, ABS tone rings, or mounting studs, so these components must be sourced separately if needed. Always follow vehicle manufacturer guidelines for brake system maintenance and rotor replacement.

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet strict quality standards for fit and function. While specific warranty details are not provided here, Centric products typically come with a limited warranty against defects in materials and workmanship. Refer to Centric’s official documentation for complete warranty information.