DuraGo BR34003 Disc Brake Rotor - Front

Overview of DuraGo BR34003 Disc Brake Rotor

The DuraGo BR34003 is a cast iron vented disc brake rotor designed for select BMW models including the 540i, 740i, 740iL, 850Ci, 850CSi, and 850i. Engineered to meet the demands of these vehicles, this rotor offers reliable braking performance with a conventional full cast construction.

• Material: Durable cast iron for consistent heat dissipation
• Vented design to improve cooling and reduce brake fade
• Nominal thickness of 1.18 inches (30 mm) with discard thickness at 1.12 inches (28.4 mm)
• Outside diameter of 12.76 inches (324 mm) suitable for specified BMW models
• Five mounting bolt holes with a 4.72 inch (120 mm) bolt circle diameter
• Non-directional brake surface for versatile installation
• Conventional rotor type without ABS tone ring

Detailed Product Description

The DuraGo BR34003 disc brake rotor is constructed from full cast iron, providing a balance of strength and thermal conductivity essential for effective braking. Its vented design allows air to circulate between the rotor surfaces, helping to dissipate heat generated during braking and reducing the risk of brake fade under demanding conditions. With a nominal thickness of 1.18 inches and a discard thickness of 1.12 inches, this rotor maintains structural integrity throughout its service life. The 12.76-inch outside diameter and five mounting bolt holes with a 4.72-inch bolt circle diameter ensure precise fitment on compatible BMW 540i, 740i, 740iL, 850Ci, 850CSi, and 850i models. The non-directional brake surface simplifies installation by allowing the rotor to be mounted in either orientation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing reduced braking efficiency due to rotor thinning
• Eliminating noise and vibration from uneven rotor surfaces
• Improving heat dissipation to prevent brake fade during extended use
• Restoring proper rotor dimensions for safe and consistent braking

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean rotor mounting surface to prevent runout and vibration
• Torque mounting bolts to manufacturer specifications for secure fit
• Check compatibility with vehicle ABS system as this rotor does not include an ABS tone ring
• Inspect brake pads and replace if worn to maintain optimal braking performance

Quality Assurance and Warranty

DuraGo disc brake rotors are manufactured to meet industry standards for durability and performance. The BR34003 rotor undergoes quality control processes to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, DuraGo products typically come with a limited warranty against defects in materials and workmanship. It is recommended to consult the product documentation or manufacturer for exact warranty terms.