Naraku Performance 24mm Intake Manifold Spacer for QMB139.
This spacer is designed to optimize flow from a 24mm intake to the 21mm inlet ports on the Naraku head in the 52.4mm big bore kit. The o-ring side contacts the head surface regardless of orientation of the Naraku logo.
Inner diameter tapers from 24mm down to 21mm
Includes o-ring
11mm thick