Dayco 89811 Accessory Drive Belt Idler Pulley

Dayco 89811 Accessory Drive Belt Idler Pulley

Dayco 89811 is a steel accessory drive belt idler pulley for serpentine belt systems. It is listed for 2008-2009 Pontiac G8 applications and uses a single bearing with a 17 mm inner diameter and 14 mm bearing width.

Key Features

• Steel pulley construction for accessory drive belt service
• Serpentine belt type application
• Single bearing design
• Bearing inner diameter: 17 mm
• Bearing width: 14 mm
• Flat pulley profile
• Maximum belt width: 6 rib
• Fits 2008-2009 Pontiac G8, N/A

Detailed Description

This Dayco accessory drive belt idler pulley is built for serpentine belt routing in the accessory drive belt system. The steel construction and flat profile support proper belt tracking, while the 6-rib maximum belt width specification matches common serpentine belt layouts. Dayco 89811 is a direct fit for 2008-2009 Pontiac G8 models listed with N/A position fitment, and the part number 89811 is the reference to verify before ordering.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Noise from a worn or rough idler pulley bearing
• Belt misalignment in the accessory drive system
• Serpentine belt flutter or uneven tracking
• Visible pulley wear on the belt path
• Accessory drive service needs on a Pontiac G8

Installation Notes and Tips

Confirm belt routing, pulley alignment, and the existing bearing dimensions before installation. Inspect the serpentine belt, tensioner, and adjacent pulleys at the same time, since wear in one component can affect the rest of the belt drive system. Verify fitment against the vehicle listing for 2008-2009 Pontiac G8 and match the part number 89811 before installation.

Quality Assurance

Dayco is a recognized name in accessory drive belt system components, and this pulley is specified with defined material and bearing measurements for accurate replacement selection.