.437″ Top Expanding valve guide pilots have a range of up to .020″ from smallest to largest dimensions. They come complete with collet and expander (replacement parts available).
Specifications:
- Top: .437″
- Size: .312″ (7.92mm)
- Range: .309″ to .329″
- OAL: 7.500″
NOTE: Do not use expanding pilots with multi-angle valve seat cutting systems such as the Goodson 3-D Fast Cut™. They can be used for valve seat grinding.