This is the O.S. New $84.98 (34% off). Max 46LA-S Control Line Engine with Muffler.:. Features: * LA-S series engines Control Line engines replace the carburetor wit a venturi that keeps engine running at a constant speed.:. * Remote needle valve reduces chance of injury from spinning props.:. * Nylon backplate mount and ratchet spring help hold settings agains vibration creep.:. * O-ring helps seal the needle from fuel and air leaks.:. * Heavy-duty webbing reinforces the one-piece crankcase in high stres areas.:. * Two year warranty covers manufacturing defects in parts and workman ship..:.