OE Number of Belt Tensioner: 31170PXKJ01/31170P8KFitment of Belt Tensioner Assembly: for Honda Odyssey 3.5L 1999-2001 for Honda Pilot 3.5L 2003-2004 for Acura MDX 3.5L 2001-2002 Specification of Automatic Belt Tensioner Pulley Assembly: Type: Belt Tensioner Material: Metal Other Name: Tensioner Pulley, Drive Belt Tensioner Pulley, Belt Tensioner Include: 1 Pc x Belt Tensioner Assembly Feature of Belt Tensioner w/Pulley: Replace the old or broken belt tensioner to avoid noisy tensioner pulley and no longer withstand belt noise. Ensure that the drive belt always maintains the proper tension, supports the belt and guides it to run in a predetermined path, and reduces the vibration and noise generated by the belt during operation. Solid metal for wear resistance, not easy break or deform, ensure longer service life. This is a non-OEM product, accessory only!