This is the Heatsink Head for the O.S. Max 50SX-H Heli Engine. / This part, also known as a cylinder head mounts to the top of the / crankcase, holds the glow plug and has cooling fins to dissipate heat. / / FEATURES: Replaces damaged cylinder heads. / One-piece aluminum construction with brass gasket insures tight fit / with crankcase. / / INCLUDES: One Heatsink Head for the O.S. Max 50SX-H Heli Engine #15500 / (OSMG1950). / One brass washer. / / REQUIRES: Screws #25613000 (OSMG8743) to mount cylinder head to crankcase. / / JXS 4/10/01 / ir/jl