Raybestos 980427 Disc Brake Rotor - Front

Overview of Raybestos Specialty - Truck Disc Brake Rotor 980427

The Raybestos Specialty - Truck Disc Brake Rotor 980427 is engineered for reliable braking performance on select Mercedes-Benz truck models. Designed as a vented, conventional rotor, it offers precise fitment and durability for vehicles like the GL320, ML350, and R500.

• Vented disc brake rotor for improved heat dissipation
• Nominal thickness of 1.260 inches (32.000 mm) with discard thickness at 1.157 inches (29.400 mm)
• Overall height of 2.146 inches (54.500 mm)
• Outside diameter measuring 12.992 inches (330.000 mm)
• Five mounting bolt holes with a 4.409 inch (112.000 mm) bolt circle diameter
• Center hole diameter of 2.638 inches (67.000 mm)
• Compatible with multiple Mercedes-Benz truck models

Raybestos Specialty - Truck Product Line Details

The Specialty - Truck line from Raybestos focuses on heavy-duty brake components tailored for truck applications. This product line emphasizes durability and performance under demanding conditions, making it suitable for Mercedes-Benz trucks requiring robust braking solutions. The 980427 rotor exemplifies this with its vented design and precise specifications to maintain braking efficiency and safety.

Technical Specifications and Features

This disc brake rotor features a vented design that enhances cooling during braking, reducing the risk of brake fade. The nominal thickness of 1.260 inches (32.000 mm) ensures structural integrity, while the discard thickness of 1.157 inches (29.400 mm) indicates the minimum safe thickness before replacement is necessary. The rotor’s overall height of 2.146 inches (54.500 mm) and outside diameter of 12.992 inches (330.000 mm) provide the correct dimensions for proper fitment. The five mounting bolt holes with a 4.409 inch (112.000 mm) bolt circle diameter and a center hole diameter of 2.638 inches (67.000 mm) ensure compatibility with specified Mercedes-Benz models.

Compatible Mercedes-Benz Models and Applications

• Mercedes-Benz GL320, GL450, GL550
• Mercedes-Benz ML320, ML350, ML450, ML500, ML550
• Mercedes-Benz R320, R350, R500

This rotor is designed specifically for these models, providing a direct replacement that meets factory specifications.

Common Issues Addressed by Raybestos Rotor 980427

• Brake rotor warping causing vibration during braking
• Reduced braking efficiency due to worn or thin rotors
• Overheating and brake fade from insufficient rotor ventilation
• Uneven brake pad wear linked to rotor surface irregularities
• Noise and pulsation caused by damaged or out-of-spec rotors

Installation Notes and Tips

Ensure the rotor surface and hub are clean and free of rust before installation. Verify the rotor thickness is above the discard thickness of 1.157 inches (29.400 mm) to maintain safety. Use proper torque specifications on the five mounting bolts to avoid rotor distortion. It is recommended to replace brake pads simultaneously to ensure optimal braking performance.

Quality Assurance and Warranty

Raybestos Specialty - Truck rotors are manufactured to meet or exceed OEM standards for fit, form, and function. While specific warranty details for part number 980427 should be confirmed with the supplier, Raybestos products typically come with a limited warranty covering defects in materials and workmanship.