O.S. Exhaust Manifold Inside FS-70/FS-91Tower Stock# LXCA99 • Manufacturer Stock# 72109500
inside the cowling or fuselage on a radio controlled airplane. This is
usually used with the EX-502 Silencers. This header is
designed to fit the O.S. FS70 & FS91 engines.
One 90 chromed exhaust manifold.
Use with EX-502 Silencer
Thread size, both ends: M11x.75 (pitch)
It has a male threaded portion on one end(whexnut) & a female