Predator Engine 173cc OHV Vertical Shaft Gas Engine 69731. Shipped with USPS Ground Advantage. Brand new open box. The Predator 5.5 HP OHV Vertical-Shaft Gas Engine is a 173cc engine that features gas-saving overhead valves for cooler, cleaner performance and longer life. It has a durable cast iron cylinder and a vertical shaft that makes it a good replacement for a lawn mower.
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