DuraGo BR900370 Disc Brake Rotor - Rear

DuraGo BR900370 Rear Disc Brake Rotor

The DuraGo BR900370 is a rear disc brake rotor built from cast iron with a full cast construction for consistent braking performance. It is a direct-fit replacement for select 2005 Buick Terraza, Chevrolet Uplander, Pontiac Montana, and Saturn Relay applications, including models with special suspension or special ride and handling suspension.

Key Features

• Cast iron rotor construction
• Full cast design
• Solid rotor type
• Non-directional brake surface
• Conventional drum-in-hat style rotor design
• 5-bolt mounting pattern
• 11.81 in. outside diameter
• 2.78 in. center hole diameter
• Compatible with rear brake service on select GM minivans and crossovers

Detailed Product Overview

DuraGo BR900370 is engineered as a rear disc brake rotor for vehicles that use a solid, conventional rotor design. Its cast iron, full cast construction supports stable braking contact and predictable pedal feel, while the non-directional surface simplifies service orientation. This rotor measures 11.81 inches in outside diameter, 0.47 inches nominal thickness, and 0.41 inches discard thickness, with a 5-lug bolt pattern and 115 mm bolt circle diameter. It is a direct replacement for 2005 Buick Terraza rear, 2005 Chevrolet Uplander rear, 2005 Pontiac Montana rear, and 2005 Saturn Relay rear applications. This part cross-references Raybestos Brakes 580297 for the same application.

Common Issues This Rotor Can Address

• Rear brake pulsation from rotor wear or thickness variation
• Reduced braking consistency caused by an out-of-spec rotor
• Noise from a damaged or uneven braking surface
• Service replacement for a worn rear rotor on GM platform vehicles
• Brake maintenance on 2005 Buick Terraza, Chevrolet Uplander, Pontiac Montana, or Saturn Relay rear applications

Installation Notes and Fitment

Fits 2005 Buick Terraza, rear. Fits 2005 Buick Terraza, rear, Special Ride & Handling Suspension. Fits 2005 Chevrolet Uplander, rear. Fits 2005 Chevrolet Uplander, rear, Special Suspension. Fits 2005 Pontiac Montana, rear. Fits 2005 Pontiac Montana, rear, Special Suspension. Fits 2005 Saturn Relay, rear. Verify rotor dimensions, bolt pattern, and center bore before installation. Clean the hub mounting surface and inspect related brake components during service to help ensure proper rotor seating and even braking contact.

Quality Assurance

DuraGo manufactures brake drums and rotors through ISO-certified factories with attention to fit, form, and function. The brand’s aftermarket brake program is built around catalog accuracy and application coverage for professional repair use.