... coupled with valve oil seal(pic as below) 4.customer logo in head motorcycle engine valve 150cc, motorcycle engine valve, ... intake & exhaust valveType Intake & Exhaust ValveEngine valve structure head and pole Contain 2pcs per set Use in conditions exhaust ... , wheel, tires, rims, and others.Engine partsCylinder block, cylinder head, crankshaft, camshaft, piston, piston ring, magneto, clutch, paper ...