Polished 15 Inch Anodized Aluminum Double Pass Finned Oil Cooler For Utv/Atv Q1 for Kubota RTV1100 Hard anodized for a permanent and long lasting finish. This item is 15" and will fit almost anywhere. Has two fittings on the same side that measure at 1/4" NPT. More efficient than radiator style coolers. Made from high end weapons grade 6061 aluminium.