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BC3990 - Polaris XP1000 (14-up) - Valve Stem Seals

Set/8 - BC valve seals are made of rubber compound material for intake application and special hi-temp compound for exhaust application. What makes valve stem seals different than almost every other type of seal? The answer is simple – they are designed to leak. Seals designed to leak may sound counter-intuitive, but the amount and way in which they leak is precisely controlled to achieve a specific goal.


$ 20.00