Raybestos 980428 Disc Brake Rotor - Rear

Overview of Raybestos Specialty - Truck Disc Brake Rotor 980428

The Raybestos Specialty - Truck Disc Brake Rotor 980428 is engineered for reliable braking performance on select Mercedes-Benz models. Designed as a solid, drum-in-hat type rotor, it meets the specific requirements of vehicles like the GL320, ML350, and R500, ensuring consistent stopping power and durability.

• Solid disc brake rotor with drum-in-hat design
• Outside diameter: 12.992 inches (330.000 mm)
• Nominal thickness: 0.551 inches (14.000 mm)
• Discard thickness: 0.449 inches (11.400 mm)
• Overall height: 2.480 inches (63.000 mm)
• Mounting bolt hole quantity: 5 with 4.409 inches (112.000 mm) bolt circle diameter
• Center hole diameter: 2.638 inches (67.000 mm)
• Compatible with multiple Mercedes-Benz models including GL320, ML320, ML350, R350, and R500

Detailed Product Description and Specifications

This Raybestos disc brake rotor, part number 980428, is part of the Specialty - Truck product line, which focuses on heavy-duty and truck applications requiring robust braking components. The rotor features a solid construction with a drum-in-hat design, integrating the parking brake drum into the rotor itself. This design is common in many Mercedes-Benz SUVs and trucks, providing a compact and efficient braking solution.

The rotor measures 12.992 inches in outside diameter and has a nominal thickness of 0.551 inches, with a discard thickness of 0.449 inches, indicating when the rotor should be replaced to maintain safe braking performance. The overall height of 2.480 inches ensures proper fitment within the brake assembly. It includes five mounting bolt holes arranged on a 4.409-inch bolt circle diameter, matching the factory specifications for the listed Mercedes-Benz models.

Compatible Vehicles and Applications

• Mercedes-Benz GL320, GL450
• Mercedes-Benz ML320, ML350, ML450, ML500, ML550
• Mercedes-Benz R320, R350, R500

This rotor is designed specifically for these models, ensuring proper fit and function without modification.

Common Issues Addressed by This Rotor

• Brake rotor warping causing vibration during braking
• Excessive rotor wear leading to reduced braking efficiency
• Corrosion or rust compromising rotor integrity
• Uneven rotor thickness causing brake noise or pulsation
• Failure of integrated parking brake drum function

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness
• Clean mounting surfaces to prevent rotor runout and ensure proper seating
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to maintain balanced braking
• Check parking brake components integrated within the drum-in-hat rotor

Quality Assurance and Warranty

Raybestos Specialty - Truck rotors are manufactured to meet or exceed OEM standards for durability and performance. While specific warranty details for part number 980428 should be confirmed at the point of purchase, Raybestos typically offers coverage against defects in materials and workmanship. Proper installation and maintenance are essential to ensure the longevity and safety of the rotor.