Centric 320.40090F Disc Brake Rotor - Front

Centric GCX Front Brake Rotor Overview

The Centric GCX Elemental Protection Disc Brake Rotor, part number 320.40090F, is a front vented rotor built for select Acura applications. It features a fully coated disc finish and coated hat finish to help resist corrosion on exposed surfaces while maintaining a smooth braking surface.

Compatible with 2015-2020 Acura TLX front and 2014-2016 Acura MDX front, this rotor is sized for direct-fit service on the front axle. The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating line is focused on corrosion protection and consistent rotor geometry for everyday brake service.

Key Features

• Part number 320.40090F
• Front disc brake rotor for Acura TLX and Acura MDX applications
• Fully coated disc finish with coated hat finish
• Vented rotor design with straight vanes
• Outside diameter: 320.0 mm (12.598 in)
• Nominal thickness: 28.0 mm (1.102 in)
• Discard thickness: 26.0 mm (1.024 in)
• 5-lug mounting pattern with 114.2 mm bolt circle
• Center hole diameter: 64.1 mm
• Floating disc mounting design
• 44 OEM vane count
• Surface type: smooth

Product Line Details

Centric GCX Elemental Protection Disc Brake Rotors - Full Coating are built for corrosion resistance on the rotor hat and exposed disc areas. This finish is especially relevant for drivers servicing Acura TLX and Acura MDX front brake systems where rotor appearance and long-term surface protection matter in daily use.

Detailed Description

Centric 320.40090F is a front vented brake rotor engineered with a smooth braking surface, straight vane construction, and a floating disc mounting layout. The rotor measures 320.0 mm in outside diameter, 47.1 mm in overall height, and 152.5 mm in hat ID, with a 64.1 mm center hole and 5 lug holes on a 114.2 mm bolt circle. These dimensions support accurate fitment for the listed Acura front brake applications.

For drivers searching for a front brake rotor for 2015-2020 Acura TLX or a front brake rotor for 2014-2016 Acura MDX, this Centric GCX rotor provides the specified coated finish and OE-style sizing needed for brake service. The 44-vane straight design supports rotor airflow, while the fully coated construction helps protect non-friction surfaces from corrosion.

Common Issues This Rotor Can Address

• Front brake rotor wear that requires replacement at discard thickness
• Brake pulsation caused by rotor surface degradation
• Corrosion on the hat and non-friction rotor surfaces
• Noise or uneven braking associated with worn front rotors
• Service needs on Acura TLX and Acura MDX front brake systems

Installation Notes and Tips

Verify rotor dimensions, hub fit, and lug pattern before installation. Clean the hub mounting surface thoroughly so the rotor seats flat and runs true. After installation, follow the brake pad manufacturer’s bedding procedure and confirm proper torque on the wheel fasteners.

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

Quality Assurance

Centric brake components are built to meet the dimensional and application requirements listed for the vehicle fitment shown here. Confirm the part number 320.40090F against your existing rotor measurements and vehicle brake specifications before ordering.