Centric 320.62136H Disc Brake Rotor - Front

Centric GCX Front Brake Rotor Overview

Centric GCX Elemental Protection Disc Brake Rotor 320.62136H is a front vented rotor built for OE-style braking performance and corrosion resistance. It is engineered for Cadillac CT4 and Cadillac ATS front applications, with a fully coated disc finish and coated hat to help protect exposed surfaces from rust.

The GCX Elemental Protection line uses application-specific coating patterns and Centric’s high-carbon metallurgy to better match the original equipment profile for the vehicle. For shoppers looking for a front brake rotor for Cadillac CT4 or a 300mm front rotor for Cadillac ATS, part number 320.62136H is built around those fitment requirements.

Key Features

• Part number: 320.62136H
• Front disc brake rotor for select Cadillac CT4 and Cadillac ATS applications
• Fully coated disc finish with coated hat for added rust and corrosion protection
• Vented rotor design with smooth surface type
• High-carbon rotor metallurgy for OE-style material matching
• 5-lug mounting pattern with 114.3 mm bolt circle
• Outside diameter: 300 mm (11.811 in)
• Nominal thickness: 26.0 mm; discard thickness: 23.0 mm
• Overall height: 61.1 mm
• Center hole diameter: 70.8 mm
• Floating disc mounting with straight vane style

Product Line Details

Centric GCX Elemental Protection Disc Brake Rotors are built to combine corrosion protection with vehicle-specific metallurgy and coating placement. The GCX FC and GCX families use coating patterns matched to brake pad friction type, while the rotor alloy is selected to align with OEM-style requirements for the application. That approach supports consistent fitment and a clean appearance over time on vehicles such as the Cadillac CT4 and Cadillac ATS.

What This Rotor Helps Address

• Front brake pulsation caused by worn or out-of-spec rotors
• Rust buildup on exposed rotor surfaces and hat areas
• Brake noise related to uneven rotor surfaces
• Reduced braking consistency from heat-worn front rotors
• Fitment issues when replacing a 300mm front rotor on select Cadillac models

Installation Notes and Fitment

Fits 2024 Cadillac CT4, front; Fits 2022-2023 Cadillac CT4, front; Fits 2020 Cadillac CT4, front; Fits 2021 Cadillac CT4, front; Fits 2013-2017 Cadillac ATS, front. Notes include GM Brake Code JE5 on 2024 CT4, JE5 on 2020-2023 CT4, and 300mm front disc with Ate front caliper on 2013-2017 ATS.

Before installation, verify rotor diameter, center hole diameter, bolt circle, and brake code against the vehicle. Clean the rotor friction surfaces before use and inspect pads, calipers, and hub condition so the new rotor seats correctly.

Quality Assurance

Centric designs GCX rotors to match OE performance targets while using coated surfaces and application-specific metallurgy for corrosion protection and fit consistency. Part number 320.62136H is built for direct front-axle replacement on the listed Cadillac CT4 and Cadillac ATS applications.