Manley Performance Viton Material Valve Stem Seals - 3/8

- A necessity when using NexTek® triple valve springs.

- Special design allows clearance inside small I.D. springs

- 3/8" valves 

- Guide O.D .500" 

- Installed Seal O.D .623"

- Use Cutter no. 41612

- Quantity 8 pcs.