Hayden 5051 Accessory Drive Belt Idler Pulley

Accessory Drive Belt Idler Pulley for Mercedes-Benz

Hayden 5051 is an accessory drive belt idler pulley built for serpentine belt systems that require a precise, OE-style pulley profile. It uses a steel construction with a black finish and meets or exceeds OEM requirements for the listed applications.

Compatible with select Mercedes-Benz CL600, S600, SL600, S600L, 600SEC, 600SEL, and 600SL models, this pulley is a direct-fit service part for accessory drive belt system repair. The Hayden pulley line focuses on replacement pulleys for belt routing, tension management, and smooth accessory drive operation.

Key Features

• Hayden 5051 accessory drive belt idler pulley
• Steel construction with black finish
• Serpentine belt application
• 8-groove pulley design
• Outside diameter: 2.500 in. (63.500 mm)
• Inside diameter: 1.40 in. with 0.668 in. bore diameter
• Pulley width: 1.062 in. (26.9 mm)
• Meets or exceeds OEM requirements
• Mounting hardware not included

Detailed Description

Hayden 5051 is an idler/tensioner pulley for the accessory drive belt system, engineered for serpentine belt routing on select Mercedes-Benz vehicles. Its 8-groove design, steel body, and OE-style dimensions help maintain proper belt tracking and pulley alignment in the accessory drive system. This part cross-references Gates 38091 for the same application.

Fits 1998-1999 Mercedes-Benz CL600, N/A; Fits 1994-1999 Mercedes-Benz S600, N/A; Fits 1994-1999 Mercedes-Benz SL600, N/A; Fits 1995 Mercedes-Benz S600L, N/A; Fits 1993 Mercedes-Benz 600SEC, N/A; Fits 1992-1993 Mercedes-Benz 600SEL, N/A; Fits 1993 Mercedes-Benz 600SL, N/A.

What It Helps Address

• Worn or noisy accessory drive belt pulley
• Belt tracking issues in the serpentine system
• Excessive pulley wobble or rough rotation
• Accessory drive belt vibration or chirping
• Service replacement for a damaged idler or tensioner pulley

Installation Notes and Tips

Verify pulley diameter, groove count, belt width, and bore dimensions before installation. Inspect the serpentine belt, tensioner, and adjacent pulleys for wear at the same time to avoid repeat service. Mounting hardware is not included, so reuse or source the correct fastener as needed for the vehicle application.

Quality Assurance

Hayden 5051 is specified as meeting or exceeding OEM requirements and is built for the listed Mercedes-Benz applications. The Hayden pulley line is used for replacement service in accessory drive belt systems where dimensional accuracy and belt alignment are important.