
CENTAURO Valve Stem Seals - Set of 4 (Ref. P650937/4)
Set of valve stem seals by CENTAURO, designed for engine reconditioning operations and regular maintenance. These seals ensure tightness around the valve stem for both intake and exhaust, limiting oil seepage into the combustion chamber. Manufactured to withstand the thermal stresses encountered in modern engines, they are used as original equipment by several manufacturers.
Ideal for engine work during a cylinder head removal, this set of 4 pieces facilitates the restoration of the timing system and the sealing. Replace worn seals during a guide inspection or valve replacement to prevent oil consumption and maintain engine responsiveness.
Usage universe: Quad, Cross, Roadster. Examples to check according to engine type and year: YAMAHA YZ 450 F (2026), SUZUKI RM-Z 450 (2025), FANTIC XXF 450 (2024).