Yamaha - Oil Filter Plug Lubrication System Component YF1-52213-31-40. Overview. Small sealing parts like this are easy to overlook, but they're usually the reason you end up chasing oil leaks later. I've seen engines come in with messy filter areas just because a plug wasn't sealing the way it should. The Yamaha Oil Filter Plug YF1-52213-31-40 helps keep the system closed up tight so oil stays where it belongs. It's a simple piece that plays a big role in keeping things clean and reliable.. Key Features. • Secure Oil System Seal - Helps prevent oil leaks at the filter housing connection point.. • Yamaha Engineered Fit - Designed to match factory specifications for proper threading and sealing.. • Durable Construction - Built to handle oil exposure, pressure, and engine heat.. • Supports Clean Operation - Keeps the oil system contained and reduces mess during operation.. • Direct Replacement Component - Installs easily during oil system service or maintenance.. Engine & Boat Compatibil