Dynamite Friction 631-48004L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-48004L) is engineered for reliable braking performance on Chevrolet and GMC trucks and SUVs. Designed specifically for models like the Chevrolet C20, C2500, and GMC P30, this vented disc brake rotor offers enhanced heat dissipation and consistent stopping power.

• Part Number: 631-48004L
• Disc Type: Vented, drilled and slotted
• Disc Finish: Plain
• Hat Finish: Zinc silver with rust-resistant coating
• Outside Diameter: 317.5 mm
• Nominal Thickness: 32.8 mm; Discard Thickness: 30.86 mm
• Bolt Hole Quantity: 8 with 9/16-18 diameter
• Bolt Circle Diameter: 165.1 mm
• Directional brake surface for optimized performance

Detailed Product Description

This DFC Brake Rotor - Drilled and Slotted - Silver is part of Dynamite Friction's DFC line, which focuses on delivering rotors with enhanced cooling and braking efficiency. The drilled and slotted surface design helps to reduce brake fade by allowing gases and debris to escape, while the vented rotor construction improves airflow to maintain optimal operating temperatures. The zinc silver hat finish provides corrosion resistance, extending the rotor's service life, especially in harsh environments.

With an outside diameter of 317.5 mm and a nominal thickness of 32.8 mm, this rotor meets OEM specifications for Chevrolet and GMC heavy-duty trucks and vans, including the C20 Suburban, C3500, G30, P20, and R2500 Suburban models. The directional brake surface ensures proper installation orientation for consistent braking performance. The rotor features eight bolt holes with a 9/16-18 diameter and a bolt circle diameter of 165.1 mm, matching factory mounting requirements.

Compatible Vehicles and Applications

• Chevrolet C20, C20 Suburban, C30, C2500, C2500 Suburban, C3500
• GMC G30, P20, P30, P2500, P3500, R20, R20 Suburban, R2500, R2500 Suburban
• Designed for heavy-duty trucks and vans requiring vented, drilled, and slotted rotors
• Ideal for vehicles experiencing brake fade, overheating, or reduced stopping power

Installation Notes and Tips

Ensure the rotor is installed with the directional surface facing the correct rotation direction as indicated on the rotor. Verify bolt hole alignment with the vehicle’s hub using the 8-bolt pattern and 165.1 mm bolt circle diameter. Check rotor thickness before installation; replace if below the discard thickness of 30.86 mm. Clean the rotor surface to remove any protective coatings or debris before mounting to ensure optimal brake pad contact.

Quality Assurance and Warranty

Dynamite Friction manufactures the DFC Brake Rotor line to meet or exceed OEM standards for fit, form, and function. The rust-resistant zinc silver hat finish helps protect against corrosion, contributing to long-term durability. While specific warranty details are not provided, Dynamite Friction products typically undergo rigorous quality control to ensure reliable performance on Chevrolet and GMC heavy-duty trucks and vans.