Yamaha - Outboard Oil Filter Engine Lubrication Filter 5GH-13440-72-00 / 5GH-13440-71-00 / 5GH-13440-70-00. Overview. If you service Yamaha four-strokes regularly, you know a good oil filter is one of the simplest ways to protect the engine. This Yamaha Outboard Oil Filter helps keep contaminants out of the lubrication system so internal components stay clean and properly protected. It's a filter many technicians install during routine service because it threads on correctly and holds up well in