Dynamite Friction 631-47038R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-47038R) is engineered for Chevrolet Cobalt models requiring reliable braking performance. This vented disc brake rotor features a directional, slotted, and drilled surface designed to enhance heat dissipation and maintain consistent stopping power.

• Compatible with Chevrolet Cobalt vehicles
• Part number: 631-47038R
• Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 20 mm; discard thickness: 18 mm
• Overall diameter: 292 mm; height: 62.7 mm
• 5 bolt holes with 14.2 mm diameter and 110 mm bolt circle diameter
• Zinc silver hat finish with rust-resistant coating
• Directional brake surface for optimized performance

Product Line Details: DFC Brake Rotor - Drilled and Slotted - Silver

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and slots to improve brake pad bite and reduce heat buildup. The silver zinc coating on the rotor hat provides corrosion resistance, extending rotor life. This product line is designed to meet the demands of daily driving and moderate performance needs, making it suitable for Chevrolet Cobalt owners seeking a balance of durability and braking efficiency.

Technical Specifications and Features

This disc brake rotor is vented to allow air circulation between the rotor faces, which helps dissipate heat generated during braking. The rotor’s nominal thickness is 20 mm, with a discard thickness of 18 mm, ensuring safe replacement intervals. The rotor surface is both drilled and slotted, which aids in removing brake dust and gases, improving pad contact and reducing brake fade. The rotor hat features a zinc silver finish with a rust-resistant coating to protect against corrosion. It includes five bolt holes with a diameter of 14.2 mm and a bolt circle diameter of 110 mm, matching the Chevrolet Cobalt’s specifications. The directional surface design optimizes braking performance by channeling heat and debris away from the contact area.

Applications and Problem Solving

• Replacement rotor for worn or warped Chevrolet Cobalt brake rotors
• Improves heat dissipation to reduce brake fade during extended braking
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Resists rust and corrosion for longer service life in various weather conditions
• Maintains consistent braking performance under normal and moderate driving conditions

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 18 mm before installation. Clean the rotor surface to remove any protective coating or contaminants prior to mounting. Verify bolt hole alignment with the Chevrolet Cobalt hub using the 110 mm bolt circle diameter and 14.2 mm bolt hole diameter. Use proper torque specifications for lug nuts to avoid rotor warping. It is recommended to replace brake pads when installing new rotors to ensure optimal braking performance.

Quality Assurance

Dynamite Friction manufactures the 631-47038R rotor to meet industry standards for fitment and performance. The rust-resistant zinc silver coating enhances durability. While no specific warranty information is provided, adherence to discard thickness and proper installation will ensure reliable operation within the rotor’s service life.