Quicksilver - V-Power Spark Plug LFR5A-11 Ignition System Components Trivalent Metal Plating 859495Q. Overview. There's a quiet confidence that comes from firing up your engine and hearing it settle into a smooth, calm idle. No hesitation, no stumble - just steady power waiting to take you wherever the morning leads. That feeling usually comes from small parts doing their job exactly right, and a spark plug is one of the most overlooked heroes in that mix. This Quicksilver-supplied NGK V-Power p