OEM Idler Pulley for 2001-2004 Nissan Pathfinder models equipped with the VQ35DE powertrain. 

The Idler Pulley is a component of the engine's accessory belt system that helps guide and maintain tension in the belt. Over time, the idler pulley can become worn or damaged, which can lead to problems with the belt system and other engine accessories.

Here are some signs that the idler pulley may need to be replaced:

• Squealing or chirping noise: A worn or damaged idler pulley can cause the accessory belt to slip or make a squealing or chirping noise. This noise may be more noticeable during engine startup or when the engine is under load.
• Excessive belt wear: If the idler pulley is not properly aligned or functioning, it can cause the accessory belt to wear unevenly or prematurely. Inspect the belt for signs of cracking, fraying, or glazing, which may indicate a problem with the idler pulley.
• Belt slippage or misalignment: A faulty idler pulley can result in the accessory belt slipping off or becoming misaligned. This can lead to a loss of power to engine accessories such as the alternator, power steering pump, or air conditioning compressor.
• Visible damage: Inspect the idler pulley for any visible signs of wear, damage, or play. Cracks, excessive wear, or a loose pulley may indicate the need for replacement.

Additionally, if the accessory belt is being replaced or there are other issues with the belt system, it is a good idea to replace the idler pulley at the same time. 

Fits:

• 2001-2004 Nissan Pathfinder
  • VQ35DE equipped