Round exhaust - bs10580
by Briggs and Stratton
small round exhaust, screw on 1/2 inch bsp thread, fits many 3hp to 4hp vertical crankshaft engines used on many lawnmowers from the 1970's onwards, could be retro fitted to engines with the kipper type exhausts in which one of the bolts have sheared.
oem number 394569s
Original Briggs and stratton part