Pin knock, for O-ring between head and cylinder, original Honda

Product description

Pin knock to center the o-ring between the head and cylinder. This one comes over the stud.

This bushing is used for the Honda NT and replacement engines.
Such as: AB23, GK4, Skyteam, Jincheng, Zhenhua, Zongshen, Lifan.

The collar is 9.5mm, the bushing is 10mm long.