DuraGo BR900302 Disc Brake Rotor - Rear

Durable Cast Iron Disc Brake Rotor for GM Vehicles

The DuraGo BR900302 disc brake rotor is engineered for reliable braking performance on select Buick, Chevrolet, Pontiac, and Saturn models. Designed with solid construction and precise dimensions, this rotor meets the demands of vehicles like the Chevrolet Uplander and Pontiac Montana.

• Material: Full cast iron construction for consistent durability
• Solid rotor design with no slots or cross-drilling
• Nominal thickness of 0.47 inches (12 mm) with discard thickness at 0.41 inches (10.5 mm)
• Overall height of 1.18 inches (30 mm) and outside diameter of 11.81 inches (300 mm)
• Six mounting bolt holes with a 4.53 inch (115 mm) bolt circle diameter
• Non-directional brake surface for versatile installation
• Compatible with multiple GM minivan and crossover models

Technical Details and Construction

The BR900302 rotor features a full cast iron build, providing a solid and reliable braking surface. Its solid rotor type means it does not include venting, slots, or cross-drilled holes, which can be preferable for certain driving conditions and vehicle applications. The rotor’s nominal thickness is 0.47 inches, with a discard thickness of 0.41 inches, ensuring clear service limits for maintenance. The 6-bolt mounting pattern with a 115 mm bolt circle diameter and 14.3 mm bolt hole diameter matches factory specifications for compatible Buick Montana, Chevrolet Relay, Pontiac Terraza, and Saturn models.

Compatible Vehicles and Applications

This DuraGo disc brake rotor is compatible with the following makes and models:

• Buick Terraza
• Chevrolet Montana, Relay, Uplander
• Pontiac Montana
• Saturn Relay

It is designed for use as a conventional, solid rotor replacement on these vehicles, providing a direct fit and reliable braking performance.

Common Issues Addressed by This Rotor

• Brake pulsation or vibration due to warped rotors
• Reduced braking efficiency from worn or thin rotors
• Noise or squealing caused by uneven rotor surfaces
• Overheating issues from deteriorated rotor material
• Corrosion-related rotor surface degradation (note: this rotor does not have rust-resistant coating)

Installation Notes and Tips

When installing the DuraGo BR900302 rotor, ensure the mounting surface is clean and free of debris to prevent uneven rotor seating. Since this rotor does not include an ABS tone ring, verify compatibility with your vehicle’s ABS system. Use proper torque specifications for the six mounting bolts to avoid rotor warping. It is recommended to replace brake pads simultaneously to maintain optimal braking performance.

Quality Assurance and Warranty

DuraGo rotors are manufactured to meet or exceed OEM specifications for fit and function. The BR900302 rotor undergoes quality control checks to ensure dimensional accuracy and material integrity. While this product does not include a rust-resistant coating, its full cast iron construction provides consistent wear characteristics. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.