Hayden 5976 Accessory Drive Belt Idler Pulley

Hayden 5976 Accessory Drive Belt Idler Pulley

The Hayden 5976 is an accessory drive belt idler pulley built for serpentine belt systems that require a 6-groove, OE-style replacement. It features a black plastic construction, a 3.750-inch outside diameter, and a 1.125-inch pulley width for direct-fit service on select Ford, Lincoln, Mercury, Chevrolet, GMC, Jeep, and Saturn applications.

Use this Hayden pulley when servicing a worn idler or tensioner pulley on vehicles such as the Ford Expedition, Ford Explorer, and Lincoln Navigator. The Hayden Pulley line focuses on replacement components that match factory-style dimensions and mounting requirements for belt drive service.

Key Features

• Part number 5976 accessory drive belt idler pulley
• Serpentine belt application with 6 grooves
• Black plastic pulley construction
• 3.750-inch outside diameter and 1.125-inch pulley width
• 0.6875-inch inside diameter / 17 mm bore diameter
• Single mounting hole design
• Meets or exceeds OEM requirements
• Compatible with select grooved and smooth pulley applications

Detailed Description

Hayden 5976 is an idler / tensioner pulley for accessory drive belt systems, engineered to maintain proper belt routing and contact across the serpentine drive. With a 95.250 mm outside diameter, 28.6 mm width, and 6-groove belt profile, it is built for vehicles that use a 1.125-inch serpentine belt. This part cross-references Four Seasons 45976 for the same application. The Hayden 5976 is listed for a wide range of service applications, including 2007-2014 Ford Expedition, 2007-2010 Ford Explorer, 2007-2010 Ford Explorer Sport Trac, 2007-2010 Ford Mustang, 2011-2014 Lincoln Navigator, and 2007-2010 Mercury Mountaineer.

What It Helps Fix

• Squealing or chirping from a worn belt drive pulley
• Belt tracking issues caused by pulley wear
• Rough or noisy accessory drive operation
• Loss of proper belt tensioner or idler function
• Visible pulley damage, cracking, or bearing-related noise

Installation Notes and Tips

Verify pulley diameter, groove count, belt width, and bore size before installation. This pulley uses one mounting hole and mounting hardware is not included. Confirm the vehicle’s belt routing and application notes, especially on Ford F-150, Lincoln Mark LT, and other models listed with AC-specific fitment or without air conditioning notes. For best results, inspect the serpentine belt and adjacent tensioner components during service.

Quality Assurance

Hayden lists this pulley as meeting or exceeding OEM requirements for the specified applications. The part is designed as a direct replacement for factory-style accessory drive service on supported vehicles, including Ford Expedition, Ford Explorer, and Lincoln Navigator fitments.