One VGS-20 handles complete head rework functions – installation of valve guide inserts, spot facing of valve guides and bosses, cutting of valve insert pockets, simultaneous multi-axis cutting of ...

There are a number of different valve-guide seals, both from the factory and the aftermarket. Numbered from left to right: (1) a Fel-Pro Viton rubber seal, (2) a rubber Sealed Power positive seal ...