Home / Lawn & Garden / Parts / Boat Motor Piston Ring, Upper 668-6051 Boat Motor Piston Ring, Upper 668-6051Price Not Available Price may not be up-to-date. Out of Stock View Product Part Number: 668-6051 Brand: HITACHI POWER TOOLS Seller: Sears PartsDirect Categories: Lawn & Garden, Parts Possible Matches$8.00Grote 66861 Pigtail Description Boat Motor Piston Ring, Upper