Hayden 5973 Accessory Drive Belt Idler Pulley

Hayden 5973 Accessory Drive Belt Idler Pulley

Hayden 5973 is a smooth accessory drive belt idler pulley for serpentine belt systems. It is built with a black plastic pulley body and a 3.500-inch outside diameter to support proper belt routing on a wide range of Ford, Buick, Pontiac, Chevrolet, Oldsmobile, Cadillac, and Dodge applications.

This Hayden Pulley line part number 5973 is an OE-style replacement for vehicles that use a smooth back idler pulley. It meets or exceeds OEM requirements and is listed across many factory air, dealer air, and 60 amp alternator applications where the correct pulley profile and width matter.

Key Features

• Accessory drive belt idler pulley for serpentine belt systems
• Smooth pulley surface for back idler applications
• Plastic construction with black finish
• 3.500-inch outside diameter and 1.000-inch pulley width
• 17 mm inside diameter / 0.6692893-inch bore diameter
• Meets or exceeds OEM specifications
• Mounting hardware not included

Detailed Description

Hayden 5973 is a smooth idler / tensioner pulley used in accessory drive belt systems to maintain belt path alignment and consistent belt tracking. The pulley measures 88.900 mm outside diameter, 25.4 mm width, and 17 mm inside diameter, making it a direct-spec replacement for many serpentine belt setups. This part cross-references Gates 36153 and Dayco 89018 for the same application.

Common fitment includes 2005-2008 Ford F-150, 1997-2007 Pontiac Grand Prix, and 1996-2005 Buick Park Avenue. It also appears in applications such as Ford Ranger, Ford E-Series vans, Buick Regal, Chevrolet Lumina, and Oldsmobile Silhouette where a smooth accessory drive belt idler pulley is required. Hayden 5973 is a practical replacement when the original pulley is worn, noisy, or no longer tracks the belt correctly.

What This Pulley Helps Address

• Squealing or chirping from a worn idler pulley
• Belt tracking issues on serpentine drive systems
• Rough pulley rotation caused by age or heat cycling
• Accessory drive belt noise during engine operation
• Replacement needs on smooth back idler pulley applications

Installation Notes and Tips

Confirm the vehicle uses a smooth pulley for the accessory drive belt idler position before ordering. Verify the pulley diameter, width, and bore size against the original part, especially on Ford F-150, Ford Ranger, and Pontiac Grand Prix applications with configuration-specific notes. Mounting hardware is not included, so reuse or source the correct fasteners as needed.

For best results, inspect the serpentine belt, tensioner, and adjacent pulleys during service. A worn belt or failing tensioner can shorten the life of a new idler pulley.

Quality Assurance

Hayden lists this pulley as meeting or exceeding OEM requirements for the specified applications. The Hayden Pulley 5973 is built as a direct-fit replacement for smooth idler and tensioner pulley service in accessory drive belt systems.