.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: .453" (11.50mm)
• Range: .450" to .470"
• OAL: 7.875"

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.