Aisin TKT-018 Engine Timing Belt Kit with New Water Pump AISIN Water Pump with gaskets. Select applications offer AISIN water pumps with housing. AISIN OE, NTN OE or Korean Hydraulic Tensioner in select applications. OE matched Idler Bearing, and Tensioner Bearing (Koyo, NSK, INA, or Korean OE brands) OE matched Timing Belt supplied by Mitsuboshi or Gates.