Title: Dual or Single Valve Retainer grooves. You can make the choice. Of course I have yet to have one fail due to the extra groove. I also love that little O-Ring to keep oil out of the Retainer.
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Dual or Single Valve Retainer grooves. You can make the choice. Of course I have yet to have one fail due to the extra groove. I also love that little O-Ring to keep oil out of the Retainer.