Centric 320.34044H Disc Brake Rotor - Rear

Centric GCX Rear Brake Rotor Overview

The Centric GCX Elemental Protection Disc Brake Rotor is built for OE-style braking performance with added resistance to rust and corrosion. This fully coated, vented rear rotor uses Centric’s RS200 finish on non-mating surfaces to help maintain appearance and durability over time.

Part number 320.34044H is engineered for select BMW rear brake applications, including BMW 320i, 323Ci, 323i, and 328i models. If you are replacing a worn rear rotor on a BMW 320i or BMW 328i, this rotor is built to match the vehicle’s original metallurgy and fitment profile.

Key Features

• Fully coated disc finish with coated hat for corrosion resistance
• Vented rotor design with smooth surface type
• High carbon content metallurgy for OE-style thermal characteristics
• Application-specific coating pattern matched to brake pad friction type
• Rear rotor fitment for select BMW 320i, 323Ci, 323i, and 328i models
• Part number 320.34044H for direct catalog lookup

Product Line Details

Centric’s GCX Elemental Protection line focuses on matching original equipment performance while improving protection on exposed surfaces. The GCX coating system is applied to non-mating areas, while the rotor metallurgy is selected to align with OEM-style carbon content requirements. That combination helps support consistent braking feel and long-term surface protection on daily-driven vehicles.

Detailed Description

This Centric GCX rear disc brake rotor measures 10.866 inches in outside diameter, 2.362 inches in overall height, and 0.748 inches nominal thickness. It features a 5-lug pattern with a 120 mm bolt circle, a 75 mm center hole diameter, straight vane construction, and a floating/DIH mounting configuration. The rotor is designed for rear use on BMW applications where OE-style dimensions and corrosion protection matter. Part number 320.34044H is a practical choice for maintaining rear brake service on compatible BMW 320i, 323Ci, 323i, and 328i vehicles.

This part cross-references BMW OE numbers 34211162315 and 34211164403 for the same application.

What This Rotor Helps Address

• Rear brake pulsation caused by worn or uneven rotor surfaces
• Rust buildup on exposed rotor areas
• Corrosion on vehicles exposed to wet or salted roads
• Reduced braking consistency from rotor wear
• Replacement needs during rear brake service on BMW 320i and BMW 328i models

Installation Notes and Tips

Verify rotor dimensions, hub fit, and rear brake application before installation. Clean the hub mounting surface thoroughly so the rotor seats flat and runs true. Inspect pads, caliper hardware, and parking brake components during service, and follow the vehicle manufacturer’s torque specifications and bedding procedure after installation.

Quality Assurance

Centric designs GCX rotors to match OE performance targets and uses coated non-mating surfaces to improve resistance to rust and corrosion. The rotor metallurgy is selected to align with OEM-style carbon content for the listed BMW rear applications.