Most single HIF44 installations use a 1/2" thick phenolic spacer between the carb and the inlet manifold. This normally is necessary for throttle arm clearance. However, we also supply this 6mm (1/4") phenolic spacer for custom installations of HIF44 or HIF38's where less thickness is required. For the thicker spacer us part GUG705964GM.

Overall thickness of this spacer is 6mm (.236").

Phenolic (noun): a usually thermosetting resin or plastic made by condensation of a phenol with an aldehyde and used especially for molding and insulating and in coatings and adhesives — called also phenolic resin.