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Re: Valve seals
The felpro ss10058 umbrella seals go on your valve stems without machining the head.
These are a supplement to the original seals. (Use oem o-ring and the umbrella style together) This seal doesn't fit onto the head like a positive style seal. It rides on the valve stem and acts as an (umbrella) so that the oil doesn't make its way through the guides in the head. Hope this helps. You have to purchase seperatly the stock style "O" rings for the top of the valves.
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