Located on the front of the motor in your 2003-2006 Nissan 350Z (Z33) or Infiniti G35 (V35) this belt tensioner / idler pulley provides the belt a smooth surface to spin across while providing the proper amount of tension. As the bearings in the pulley wear, you may begin to experience a high pitch squeaking or squealing. Over time this may result in complete bearing failure, causing the pulley to lock up and break the belt.
There are two separate belt tensioners on your VQ35DE. Use the options below to select the part for the correct belt.