Set. This Is Used With The Following O.S. Engines1.20 AX 35 AX 91 HZ F3C   91 HZ-PS 72FS-a 81FS-a This product was added to our catalog on April 26, 2011

is intended for use with O.S. engines that have a 1/4" crank thread. This Part Is Used With The Following O.S. Engines 50 SX 46 VX 46 FX  46 LA  40 FX  40 LA FS-40 32 SX ...

and is intended for use with the O.S. 91HZ-PS and 91HZ-F3C Engines. This product was added to our catalog on August 30, 2017

and is intended for use with the O.S. 50 SX and 50 SX-H Helicopter Engines. This product was added to our catalog on June 17, 2009

and is intended for use with the O.S. 50SX-H Helicopter Engine. This set contains gaskets for the backplate and cylinder head. This product was added to our catalog on June 17, 2009 ...