Centric 320.39007H Disc Brake Rotor - Rear

Overview of Centric GCX Elemental Protection Disc Brake Rotor

The Centric GCX Elemental Protection Disc Brake Rotor (part number 320.39007H) is engineered for reliable braking performance on select Volvo models. Designed with a full coating and high carbon content, this rotor offers enhanced durability and corrosion resistance for vehicles like the Volvo 240, 740, 745, 760, 780, 940, 960, DL, and GLE.

• Full coating on disc and hat for corrosion protection
• High carbon content for improved heat dissipation and wear resistance
• Solid disc type with smooth surface finish
• Compatible with 5-lug bolt pattern and 4 mounting holes
• Nominal outside diameter of 11.063 inches (281 mm)
• Nominal thickness of 0.378 inches (9.6 mm) with discard thickness at 0.331 inches (8.4 mm)
• Overall height approximately 2.894 inches (73.5 mm)
• Center hole diameter of 2.677 inches (68 mm)
• Weight around 11.81 lbs (5.37 kgs)

About the Centric GCX Elemental Protection Product Line

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content line focuses on providing rotors with a comprehensive protective coating to resist rust and corrosion. The high carbon content enhances rotor strength and heat management, which helps maintain consistent braking performance over time. This product line is designed to meet or exceed OEM specifications, making it suitable for Volvo vehicles requiring reliable and long-lasting disc brake rotors.

Product Details and Specifications

This solid disc brake rotor features a fully coated disc and hat finish to protect against environmental elements that can cause premature wear. The smooth surface type ensures even pad contact and braking efficiency. With a 5-stud lug hole pattern and a mounting bolt hole circle diameter of 108 mm (4.252 inches), it fits specific Volvo models including the 240, 740, 745, 760, 780, 940, 960, DL, and GLE. The rotor’s nominal thickness is 0.378 inches (9.6 mm), with a discard thickness of 0.331 inches (8.4 mm), indicating when replacement is necessary to maintain safe braking performance.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Volvo 240, 740, 745, 760, 780, 940, 960, DL, and GLE models
• Addresses rotor corrosion and rust issues due to environmental exposure
• Improves braking consistency by replacing uneven or damaged rotors
• Helps reduce brake noise and vibration caused by rotor surface irregularities
• Restores proper rotor thickness to ensure safe braking distances

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.331 inches) before installation
• Clean hub surface and mounting points to prevent rotor misalignment
• Use proper torque specifications for the 5-lug bolt pattern to avoid warping
• Check compatibility with ABS systems; this rotor does not include an ABS tone ring
• Inspect brake pads and replace if worn to optimize rotor performance

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM standards, ensuring consistent quality and performance. The full coating and high carbon content contribute to extended rotor life and resistance to corrosion. While specific warranty details are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Always consult product documentation or manufacturer resources for exact warranty terms.