Hayden 5046 Accessory Drive Belt Idler Assembly

Hayden 5046 Idler Assembly for BMW 750iL

The Hayden 5046 accessory drive belt idler assembly is a black plastic pulley assembly built for serpentine belt routing in select BMW 750iL applications. It is specified for alternator and power steering drive belt systems with auto tensioner setups, making it a direct-fit service part for the accessory drive belt system.

Key Features

• Brand: Hayden Idler Assembly
• Part number: 5046
• Accessory drive belt idler assembly for serpentine belt systems
• Plastic construction with black finish
• Smooth groove pulley style
• Outside diameter: 2.76 in. / 70.0 mm
• Pulley width: 1.11 in. / 28 mm
• Belt width: 1.125 in. / 28.575 mm
• Mounting hole quantity: 2
• Mounting hole diameter: 0.32 in.

Product Details

Hayden 5046 is an idler assembly for the accessory drive belt system, engineered around a smooth pulley profile for serpentine belt routing. The pulley measures 2.76 inches outside diameter and 1.11 inches wide, with a 1.125-inch belt width specification. Its two-hole mounting layout and compact 4.1-inch length support OE-style replacement in the BMW 750iL belt drive system. This part cross-references Gates 38062 for the same application.

Compatible With BMW 750iL applications from 1994-2000 and 2001, including alternator, power steering, grooved pulley, and smooth pulley positions as listed below. Hayden 5046 is also referenced in interchange listings for related accessory drive belt service parts.

Common Problems This Part Addresses

• Worn or noisy idler pulley in the serpentine belt path
• Belt tracking issues caused by pulley wear or surface damage
• Accessory drive belt vibration from a deteriorated idler assembly
• Improper belt routing support in alternator or power steering drive systems
• Service replacement for a damaged BMW 750iL idler assembly

Fitment

• Fits 2001 BMW 750iL, N/A — Alt & Power Steering Drive Belt w/ Auto Tensioner; Idler Assembly
• Fits 2001 BMW 750iL, Alternator — w/ Auto Tensioner; Idler Assembly
• Fits 1994-2000 BMW 750iL, N/A — Alternator & Pwr Str Belt Drive; Idler Assembly
• Fits 1994-2000 BMW 750iL, Alternator — Idler Assembly
• Fits 1994-2000 BMW 750iL, Power Steering — Idler Assembly
• Fits 1994-2000 BMW 750iL, Grooved Pulley — Idler Assembly
• Fits 1994-2000 BMW 750iL, Smooth Pulley — Idler Assembly

Installation Notes and Tips

Verify pulley style, belt width, and mounting hole dimensions before installation. Inspect the serpentine belt, tensioner, and adjacent pulleys for wear so the new idler assembly is installed into a clean belt path. Confirm the application against the vehicle’s belt routing and position notes for the BMW 750iL before service.

Quality Assurance

Hayden manufactures accessory drive belt system components for service replacement applications. Part number 5046 is built to match the listed pulley dimensions and fitment requirements for the specified BMW 750iL configurations.