Hayden 5918 Accessory Drive Belt Idler Pulley - Lower

Accessory Drive Belt Idler Pulley Overview

Hayden 5918 is an accessory drive belt idler pulley built for serpentine belt systems that use a smooth back idler design. It features a steel construction with a black finish, a 3.000-inch outside diameter, and a 1.50-inch pulley width for direct replacement service on select GM vehicles.

Compatible With 2006-2011 Chevrolet Impala, lower; 2006-2010 Chevrolet Malibu, lower; and other listed Buick, Pontiac, Saturn, and Chevrolet applications that use a smooth accessory drive belt idler pulley. Hayden 5918 is a practical OE-style replacement for worn or noisy belt routing components.

Key Features

• Accessory drive belt idler pulley for serpentine belt systems
• Steel pulley construction with black finish
• Smooth back idler pulley type
• 3.000-inch outside diameter and 1.50-inch pulley width
• 0.671875-inch inside diameter / 17 mm bore diameter
• Single mount hole design
• Meets or exceeds OEM requirements
• Mounting hardware included

Product Details

Hayden Pulley 5918 is engineered as an idler/tensioner pulley for accessory drive belt routing where a smooth pulley surface is required. The steel body and smooth groove-free design support proper belt tracking on serpentine systems, while the 76.200 mm outside diameter and 34.925 mm belt width specification align with common OE dimensions. This part cross-references Dayco 89160 for the same application.

Use Hayden 5918 when servicing a worn, noisy, or damaged lower idler pulley on vehicles such as the Chevrolet Impala, Chevrolet Malibu, Buick Lucerne, Pontiac G6, and Saturn Vue. The part number 5918 is also commonly searched as a replacement accessory drive belt idler pulley for GM 3.5L and related serpentine belt applications.

Common Issues This Part Can Address

• Squealing or chirping from a worn idler pulley bearing
• Belt misalignment caused by pulley wear
• Visible pulley damage, wobble, or rough rotation
• Serpentine belt tracking problems at the lower pulley location
• Noise from a failing accessory drive belt idler pulley

Installation Notes and Tips

Confirm the vehicle uses a smooth lower accessory drive belt idler pulley before ordering. Match the pulley diameter, width, and bore dimensions to the original part, and inspect the serpentine belt, tensioner, and adjacent pulleys during service. For best results, replace any belt showing glazing, cracking, or uneven wear at the same time.

Fits 2009-2011 Buick Lucerne, lower; 2006-2011 Chevrolet Impala, lower; 2006-2010 Chevrolet Malibu, lower; 2006-2010 Pontiac G6, lower; 2008-2010 Saturn Vue, lower; 2006-2008 Chevrolet Uplander, lower; 2007-2008 Saturn Aura, lower; 2006-2007 Buick Terraza, lower; 2006-2007 Chevrolet Monte Carlo, lower; 2006-2007 Saturn Relay, lower; and 2006 Pontiac Montana, lower.

Quality Assurance

Hayden lists this pulley as meeting or exceeding OEM requirements, making it a direct-fit replacement option for the specified applications. The part is built for accessory drive belt service where consistent pulley alignment and smooth belt operation are required.