need part number for flywheel belt

Does anyone know the part number for the belt on lycoming O360_A1A? Standard pulley. Its a gate v-belt but can't find number.

Hi Tom, This what Plane Power suggests but not all alternators will use the same belt. The supplied 15355 Dayco V Belt will fit the 9 3/4" diameter ring gear support pulley, for applications which have a 7 1/2" diameter ring gear support pulley locally purchase XL7300 Gates V Belt or equivalent. Larry

Mine is a Gates XL7355 (also has #10A0900 on it) using a Vans 60 amp alternator.

edit- 13/32" x 36-1/8"

NAPA

I have found that the NAPA green belts last longer and work better than the Gates. YMMV

Gary