Centric 320.34074H Disc Brake Rotor - Rear

Centric GCX Rear Brake Rotor for BMW

The Centric GCX Elemental Protection Disc Brake Rotor is built for OE-style braking performance with added resistance to rust and corrosion. This rear vented rotor uses a fully coated finish and high carbon metallurgy to support consistent braking on select BMW 525i, 530i, and 528i applications.

Part number 320.34074H is part of Centric’s GCX line, which uses application-specific coating patterns and rotor metallurgy matched to OEM-style friction and vehicle requirements. For BMW rear brake service, this rotor is designed to deliver a clean appearance and durable surface protection over time.

Key Features

• Part number 320.34074H
• Rear disc brake rotor for select BMW applications
• Fully coated disc finish with coated hat surface
• High carbon content rotor metallurgy
• Vented rotor design with smooth surface type
• Outside diameter: 320.000 mm (12.598 in)
• Nominal thickness: 19.900 mm (0.783 in)
• Discard thickness: 18.400 mm (0.724 in)
• 5-lug pattern with 120.000 mm bolt circle diameter
• Center hole diameter: 75.000 mm (2.953 in)

Detailed Description

Centric GCX Elemental Protection Disc Brake Rotors are engineered to match OE performance while adding full-surface corrosion protection on non-mating areas. The RS200-style coating helps protect the rotor hat and outer surfaces from rust, while the high carbon alloy supports stable braking characteristics under everyday driving conditions. This makes the 320.34074H a practical choice for rear brake replacement on BMW 525i, BMW 530i, and BMW 528i models.

Compatible With 2004-2007 BMW 525i, rear; 2004-2007 BMW 530i, rear; and 2008-2010 BMW 528i, rear. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Rotor Can Address

• Rear brake rotor rust on coated and uncoated surfaces
• Brake pulsation caused by worn or below-spec rotor thickness
• Uneven braking feel from aged rear rotors
• Visible corrosion that affects rotor appearance
• Replacement needs during BMW 525i, 530i, or 528i rear brake service

Installation Notes and Tips

Verify rotor dimensions, hub fitment, and lug pattern before installation. Clean the hub mounting surface thoroughly to reduce runout concerns, and inspect pads and caliper hardware during service. For best results, follow the vehicle manufacturer’s brake bedding procedure after installation. Fits 2004-2007 BMW 525i, rear; fits 2004-2007 BMW 530i, rear; fits 2008-2010 BMW 528i, rear.

Quality Assurance

Centric designs the GCX rotor line to align with OEM-style metallurgy and application-specific coating patterns. The 320.34074H is built for direct rear brake replacement on the listed BMW applications and uses coated non-mating surfaces for added corrosion protection.