DuraGo BR3477 Disc Brake Rotor - Front

DuraGo BR3477 Front Brake Rotor

The DuraGo BR3477 is a front disc brake rotor built from cast iron with a full cast construction for consistent braking performance. It is a vented, non-directional rotor with a 10.94-inch outside diameter, 5-bolt mounting pattern, and OE-style dimensions for select Mercedes-Benz applications.

Fits 1980-1985 Mercedes-Benz 300SD, front with ATE & Bendix calipers. Fits 1984-1985 Mercedes-Benz 380SE, front with ATE & Girling, Bendix front calipers. Fits 1981-1985 Mercedes-Benz 380SL, front. Fits 1984-1985 Mercedes-Benz 500SEL, front with ATE & Bendix front calipers. Fits 1981-1983 Mercedes-Benz 380SEL, front with ATE & Girling, Bendix front calipers. Fits 1981 Mercedes-Benz 380SLC, front.

Key Features

• Cast iron rotor with full cast construction
• Vented design for front brake applications
• Non-directional brake surface
• Outside diameter: 10.94 in. / 278 mm
• Nominal thickness: 0.87 in. / 22 mm
• Discard thickness: 0.76 in. / 19.4 mm
• 5 mounting bolt holes with 112 mm bolt circle diameter
• Center hole diameter: 3.15 in. / 80 mm
• Cross-reference: this part cross-references Anchor 3477 and 9937 for the same application.

Detailed Description

DuraGo BR3477 is a conventional front brake rotor for select Mercedes-Benz models, including the 300SD, 380SE, 380SL, 500SEL, 380SEL, and 380SLC. The rotor is manufactured from cast iron and built to fit the specified OE dimensions, including the 278 mm outside diameter, 80 mm center hole, and 112 mm bolt circle. DuraGo manufactures brake drums and rotors in ISO-certified factories, with an emphasis on fit, form, and function for professional repair work. This part number, BR3477, is a direct replacement choice for front brake service where a vented, non-directional rotor is required.

Common Brake Service Issues It Addresses

• Front rotor wear that has reached discard thickness
• Brake pulsation caused by uneven rotor surfaces
• Reduced braking consistency from heat-affected rotors
• Noise or vibration during front brake operation
• Rotor replacement needs on Mercedes-Benz 300SD, 380SE, 380SL, 500SEL, 380SEL, and 380SLC front brake systems

Installation Notes and Tips

Verify rotor dimensions, bolt pattern, and center bore before installation. This rotor is listed for front use only and for specific caliper configurations on certain Mercedes-Benz models, including ATE, Bendix, and Girling setups where noted. Inspect pads, calipers, and hub surfaces during service, and confirm the rotor meets the vehicle’s minimum thickness requirement before returning the vehicle to service.

Quality Assurance

DuraGo has over 45 years of aftermarket manufacturing experience, and its brake rotor program is built for professional cataloging and application coverage. The brand states that its brake components are produced in ISO-certified factories to meet fit, form, and function requirements.