Centric 320.34143H Disc Brake Rotor - Rear

Centric GCX Rear Brake Rotor for BMW

Centric GCX Elemental Protection Disc Brake Rotor 320.34143H is a rear vented rotor built for OE-style braking performance and long-term corrosion resistance. It uses a fully coated disc finish and coated hat surface to help maintain a cleaner appearance on BMW applications such as the 2012-2021 BMW 228i, 230i, 320i, 328i, 328d, 428i, and 428i Gran Coupe.

Key Features

• Part number 320.34143H
• Fully coated disc finish with coated hat for added rust protection
• High carbon content metallurgy for OE-matched rotor behavior
• Vented rotor design with smooth surface type
• Outside diameter: 299.8 mm (11.803 in.)
• Nominal thickness: 20.0 mm; discard thickness: 18.4 mm
• 5-lug pattern with 120 mm bolt circle and 75 mm center hole
• Straight vane style and floating/DIH disc mounting

Product Details

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content line is engineered around application-specific coating patterns and metallurgy. Centric pairs its RS200 coating on non-mating surfaces with high carbon alloy construction to better align with OEM rotor profiles. For BMW rear brake service, this rotor is a direct-fit option for vehicles that call for a 300 mm rear disc, including base brake and single-piston rear caliper setups where listed. Part number 320.34143H is a practical choice for drivers looking to replace a worn rear rotor while preserving factory-style fit and finish.

What This Rotor Helps Address

• Brake pulsation caused by rotor wear or thickness variation
• Rust buildup on exposed rotor surfaces
• Reduced braking consistency from heat-cycled or scored rear rotors
• Uneven pad contact on a worn smooth rotor surface
• Loss of OE-style appearance on the rear brake assembly

Installation Notes and Fitment

Fits 2017-2021 BMW 230i, rear, 300mm rear disc; base brakes. Fits 2017-2021 BMW 230i xDrive, rear, 300mm rear disc; base brakes. Fits 2016-2018 BMW 320i, rear, 300mm rear disc; base brakes; single piston rear caliper. Fits 2016-2018 BMW 320i xDrive, rear, 300mm rear disc; base brakes; single piston rear caliper. Fits 2017-2018 BMW 328d, rear. Fits 2014-2016 BMW 228i, rear, 300mm rear disc; base brakes; M Sport Package. Fits 2015-2016 BMW 228i xDrive, rear, 300mm rear disc; base brakes; M Sport Package. Fits 2013-2015 BMW 320i, rear. Fits 2014-2015 BMW 328d, rear, 300mm rear disc; single piston rear caliper. Fits 2013-2015 BMW 328i, rear, 300mm rear disc; single piston rear caliper. Fits 2014-2015 BMW 428i, rear, 300mm rear disc; base brakes. Fits 2015 BMW 428i Gran Coupe, rear, 300mm rear disc; base brakes. Fits 2012 BMW 328i, rear, 300mm rear disc; base brakes.

Verify rotor diameter, thickness, and brake package before installation. Clean the hub mounting surface, inspect pads and caliper hardware, and confirm the rotor seats flat before final torque. This part cross-references no listed alternate part numbers for the same application.

Quality Assurance

Centric designs GCX rotors to match OE performance targets while using coated surfaces and high carbon metallurgy for corrosion protection and service life. Part number 320.34143H is built for BMW rear brake applications where the listed dimensions and brake package match the vehicle.