Jagg Oil Coolers Oil Filter Adapter Designed for Yamaha Bolt models, this adapter allows for a seamless connection between the oil filter landing and the oil filter, facilitating the installation of an oil cooler by providing straightforward access to the oil supply. Features: Flows oil through the filter first, for better flow CNC machined from billet aluminum Anodized to a satin black finish Push-on hose fittings for 3/8 or -6An hose Required for oil cooler installation