400345 / 400345 - Application Notes Underdrive Crank Pulley Applications: 2003-2006 Nissan 350Z 3.5L 2003-2006 Infiniti G35 Sedan 3.5L 2003-2007 Infiniti G35 Coupe 3.5L 2003-2007.5 Infiniti FX35 3.5L (Single Throttle Body) OEM Pulley Weight: 6.23lbs STILLEN Pulley Weight: 1.28lbs Approximate Underdrive: 20%