Centric 320.45066F Disc Brake Rotor - Rear

Rear Brake Rotor for Mazda 3 and Mazda 3 Sport

Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, part number 320.45066F, is a rear disc brake rotor for select Mazda 3 and Mazda 3 Sport applications. It combines a fully coated disc finish with a coated hat to help maintain a cleaner rotor surface in everyday driving conditions.

Key Features

• Fully coated disc finish with coated hat for added surface protection
• Solid rotor design with smooth surface type
• Outside diameter: 10.433 in. / 265.000 mm
• Nominal thickness: 0.433 in. / 11.000 mm
• Discard thickness: 0.354 in. / 9.000 mm
• Overall height: 1.614 in. / 41.000 mm
• 5-lug pattern with 4.500 in. / 114.300 mm bolt circle
• Center hole diameter: 2.827 in. / 71.800 mm
• Floating disc mounting design
• ABS tone ring not included; bearings not included

Product Details

Centric GCX Elemental Protection Disc Brake Rotors - Full Coating are built for rear brake service on 2004-2013 Mazda 3 and 2009-2013 Mazda 3 Sport models. The 320.45066F rotor uses a solid construction with a smooth friction surface and fully coated finish, along with a coated hat, to match the fitment and dimensional requirements of the listed rear brake applications. This rotor measures 265 mm in outside diameter and 11 mm nominal thickness, making it a direct-spec replacement for the confirmed Mazda 3 rear brake setup.

The Centric GCX Elemental Protection line focuses on corrosion-resistant surface treatment across the rotor face and hat area. For shoppers searching for a rear brake rotor for Mazda 3 2004-2013 or a rear brake rotor for Mazda 3 Sport 2009-2013, part number 320.45066F provides the key dimensions and mounting layout needed for the application.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Rotor Addresses

• Rear brake rotor wear that has reached discard thickness
• Brake pulsation caused by uneven rotor surface condition
• Corrosion on the rotor hat or exposed metal surfaces
• Noise or vibration from a worn rear braking surface
• Fitment mismatch when replacing the rear rotor on Mazda 3 or Mazda 3 Sport models

Installation Notes and Tips

Verify rear axle fitment, rotor diameter, center hole diameter, and bolt circle before installation. Clean the hub mounting surface thoroughly so the floating mounting design seats correctly and the rotor runs true. Inspect pads, caliper hardware, and parking brake components during service, and confirm the rotor surface is free of protective residue before use.

Quality Assurance

Centric GCX Elemental Protection rotors are engineered to meet the dimensional and finish requirements of the listed Mazda rear brake applications. Part number 320.45066F is specified for 2004-2013 Mazda 3 rear and 2009-2013 Mazda 3 Sport rear fitments.