Valve Springs Flh Model

Starting with engine number 57FLH-4444, all Model FLH engines shipped from the factory-have new, stronger valve springs. Also, these new springs are now being supplied on parts order for replacement requirements applying to earlier FLH engines.

Because of the higher valve spring poundage obtained with the new springs, better valve following at high engine speed results. Therefore, on earlier FLH engines, when faulty valve action is suspected as the cause of substandard engine performance at high engine speed, we recommend replacing old valve springs with new type springs.

Use the following chart as a guide for ordering and using Big Twin OHV valve springs.

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