These .375″ 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: .375″
• Size: .312″ (7.9mm)
• Range: .309″ to .329″
• OAL: 7.750″

NOTE: Do NOT use expanding pilots with multi-angle valve seat cutting systems such as Goodson 3-D Fast Cut. They can, however, be used for valve seat grinding.