Mercury - Oil Filter for Harley-Davidson Motorcycles High-Flow Chrome Series 8M0130548. Overview. Every rider knows the small rituals that make a bike feel like part of their daily rhythm-checking the oil, tightening what needs tightening, and listening for the steady heartbeat of an engine that's ready for the road. An oil filter might not seem like much, but when you pick one you trust, it becomes part of that quiet confidence you carry every time you thumb the starter. With the Quicksilver 8M