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CENTAURO offers these valve stem seals. Each valve slides in a guide. At the top of the guide, a small seal (the valve stem seal) lets through just enough oil to lubricate but stops it running into the combustion chamber.
The benefits:
Centauro has made gaskets in Italy since 1958, for original equipment and the aftermarket alike, with ISO 9001-certified production.
Blue smoke on start-up after standing overnight is the typical sign of hardened seals. They are also replaced at every head rebuild, even if they look fine.
Cross-Mania tip: Replace them every time the valves are removed and oil the valve stem before sliding them on.
Universal part: check the dimensions given before ordering.
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