Pro Boat's new .18 Marine Engine offers over 20% more power than most .15-size engines. Over 20% more power than most .15 size engines Water-cooled cylinder head Pull starter and glow plug included Direct replacement for Dynamite® .15S The new Pro Boat .18 water-cooled marine engine offers 20% more power than most .15 size engines. This is a perfect replacement for the Dynamite .15S. The .18 also comes equipped with a pull-start for hassle-free startups every time. Look for the Pro Boat .18 Marine Engine at a dealer near you. Type: 2-stroke Marine Displacement: .18 cu. in (2.74cc) Bore: .626 in (15.9 mm) Stroke: .578 in (14.7mm) Total Weight: 9.2 oz (260g) HP: 1.1 Cylinder Type: ABC Starting System: Pull Start Carb Type: Rotary