We are providing high-qualityMS Valve Inserts that are very important components of the valve train in internal combustion engines, as they are the interface between the valve and the cylinder head. Valve inserts together serve to seal off the combustion chamber regulating the inlet and exhaust gasses. The valve insert avoids direct contact of the valve with the cylinder head and absorbs part of the combustion heat which is transferred to the valve by passing it on to the cylinder head. The selection of material in valve inserts is of critical importance in order to withstand millions of cycles in high temperatures, stress and corrosive gasses and compounds.