Centric 320.39045H Disc Brake Rotor - Rear

Overview of Centric GCX Elemental Protection Disc Brake Rotors

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content offer reliable braking performance for Volvo vehicles. Designed specifically for models like the Volvo S60, S80, V60, V60 Cross Country, V70, and XC70, these rotors provide consistent stopping power with enhanced durability.

• Part Number: 320.39045H
• Fully coated disc and hat finish for corrosion resistance
• High carbon content for improved heat dissipation and reduced brake fade
• Vented rotor design with pillar-style vanes for efficient cooling
• Nominal thickness of 0.862 inches (21.9 mm) and discard thickness of 0.787 inches (20 mm)
• Outside diameter of 11.89 inches (302 mm) with a smooth surface finish
• Floating disc mounting with 5 lug holes and a mounting bolt hole circle diameter of 108 mm (4.252 inches)
• Weight approximately 15.25 lbs (6.93 kgs)

Product Line Details

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content line focuses on providing rotors with a full protective coating to resist rust and corrosion, extending rotor life. The high carbon content enhances thermal conductivity and reduces brake noise and vibration, making these rotors suitable for daily driving and moderate performance needs on compatible Volvo models.

Technical Description and Features

This disc brake rotor features a fully coated surface and hat finish to protect against environmental elements, which is critical for maintaining rotor integrity over time. The vented design with pillar-style vanes improves airflow, helping to dissipate heat generated during braking. The rotor’s nominal thickness of 0.862 inches ensures structural strength, while the discard thickness of 0.787 inches indicates when replacement is necessary to maintain safe braking performance. The smooth surface finish supports even pad contact and consistent braking feel. The floating disc mounting system allows for slight rotor movement, reducing stress and improving longevity.

Compatible Vehicles and Applications

• Volvo S60
• Volvo S80
• Volvo V60 and V60 Cross Country
• Volvo V70
• Volvo XC70

This rotor is designed specifically for these Volvo models, ensuring proper fitment and optimal braking performance.

Common Issues Addressed

• Brake rotor corrosion and rust buildup
• Brake fade due to overheating
• Uneven brake pad wear
• Brake noise and vibration
• Reduced braking efficiency from worn or warped rotors

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 0.787 inches before installation. Clean the hub surface to prevent runout and ensure proper rotor seating. Use the correct torque specifications for the 5 lug bolts on the 108 mm bolt circle diameter. Since bearings and ABS tone rings are not included, verify compatibility with your vehicle’s existing components. Proper bedding of new rotors and pads is recommended to achieve optimal braking performance.

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The full coating and high carbon content materials contribute to durability and consistent braking performance. Warranty details should be confirmed with the point of purchase or manufacturer, as coverage may vary.