YS Engines Piston Ring

Max .37 SZ-H Ringed Engine.Features:Genuine OS Engines replacement partsSteel constructionIncludes:1x CrankshaftRequires:Front Bearing (OSMG3048) & Rear Bearing This product was added to our catalog on April 19, 2017

intended for use with the O.S. 91HZ F3C and 91HZ PS 3D Helicopter Engines. NOTE: This Part Is Compatible With The Following O.S. Engines 91RZ-H 91RZ-H DH 91SZ-H91SZ-H PH This product was added to our ...

Nipple (pressure fitting). This Fuel inlet nipple is used in a variety of O.S. engines from sizes .12 to 2.40, so please check your instruction manual or www.osengines.com to verify that this ...

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 ...

Check Valve. This valve pressurizes the fuel tank using the pressure developed in the crank chamber and prevents the return of fuel.  This product was added to our catalog on May 13, ...