Centric 320.34047H Disc Brake Rotor - Rear

Overview of Centric GCX Elemental Protection Disc Brake Rotor

The Centric GCX Elemental Protection Disc Brake Rotor (Part Number 320.34047H) is engineered for BMW Z3 models requiring reliable braking performance. Featuring a fully coated surface and high carbon content, this solid rotor is designed to provide consistent stopping power and corrosion resistance.

• Fully coated disc and hat finish for enhanced corrosion protection
• High carbon content for improved thermal stability and wear resistance
• Solid rotor design with smooth surface for consistent brake pad contact
• Compatible with BMW Z3 models requiring 10.709 inch (272 mm) outside diameter rotors
• Includes 5 stud/lug holes with 14.6 mm diameter for secure mounting

Product Line Details: Centric GCX Elemental Protection Disc Brake Rotors

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content line focuses on durability and corrosion resistance through advanced coating technology. This product line utilizes a full coating on both the disc and hat surfaces, which helps prevent rust and extends rotor life. The high carbon content in the rotor material enhances heat dissipation and reduces the risk of warping under heavy braking conditions, making it suitable for performance-oriented vehicles like the BMW Z3.

Technical Specifications and Features

This rotor features a nominal thickness of 0.394 inches (10.000 mm) and a discard thickness of 0.331 inches (8.400 mm), ensuring precise wear limits for safe operation. The overall height measures 3.276 inches (83.200 mm), and the center hole diameter is 2.953 inches (75.000 mm). The mounting bolt hole circle diameter is 120.000 mm (4.724 inches), accommodating 5 lug holes. The rotor weighs approximately 10.87 lbs (4.94 kgs), balancing durability with manageable weight for the BMW Z3.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW Z3 models
• Addresses brake noise and vibration caused by uneven rotor surfaces
• Prevents corrosion-related rotor degradation in humid or salty environments
• Improves braking consistency under high thermal loads
• Suitable for vehicles requiring solid, smooth-surface rotors without ABS tone rings

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.331 inches) before installation
• Clean mounting surfaces to prevent uneven rotor seating
• Torque lug nuts to manufacturer specifications for secure fitment
• Check compatibility with existing brake pads and calipers on BMW Z3
• Perform a bed-in procedure after installation to optimize braking performance

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The full coating process provides enhanced corrosion resistance, contributing to longer service life. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Always consult product documentation or manufacturer resources for warranty terms.