Fitment??Fits Husqvarna chainsaw models 361, 365, 371, 372, 372xp, also fits 371K cut-off saws. Description:-Round inlet on cylinder, and has port for decompression valve. -These pistons are impressive, they normally add at least 10 psi compression over the original style flat top piston. More compression equals more power.-Please note: this kit will not fit the new x-torque engines made in 2010 and newer (372xp x-torq and 365 x-torq) We have other kits that will fit the x-torq saws.Package Include??52mm Nikasil plated cylinderpiston 2*ring slots1*Caber rings1*wrist pin1*circlips1*gaskets1*Oregon spark plugW/o Product InstructionNotes??-If You Are Not Sure The Item 100% Fit For Your Vehicle Before Your Purchase.-Please Allow 1-3CM Differs Due To Manual Measurement.-Due To The Different Display And Different Light, The Picture May Not Reflect The Actual Color Of The Item. Thanks For Your Understanding.