OS .46LA engine has a 1-piece crankcase. Crankshaft is set in one long bronze Oilite bushing (no bearings). Schnuerle porting (AKA Schnuerle scavenging). Side exhaust. Nylon backplate with remote needle valve. 40D carburetor. Aluminum piston with nickel-plated brass cylinder liner. This product includes one expansion-style muffler #E-3030. One instruction manual and sticker sheet. One assembled engine with glow plug. Two 3x30mm phillips head screws to bolt muffler to engine.

Fuel with 5% - 15% Nitromethane and 18% (minimum) oil content. (Most of the 5%-15% fuels we carry meet these requirements).