Tomei Adjustable Cam Gear 4AG 4Valve Styling This adhesive-backed foam strip seals

This adhesive-backed foam strip seals any remaining gap between the fan shroud and radiator so that the fans are only moving air that has passed through the radiator core as opposed to pulling in air from the engine bay

Replace worn plastic with Delrin & machined aluminum

meaning it will give you reliable readings for many years

Whilst this works fine

Some stage 1 kits are available with a 6 spring disc

Tomei Adjustable Cam Gear 4AG 4Valve Styling This adhesive-backed foam strip sealsThe Tomei cam pulley's allow for ultra fine tuning of your engine's performance, with an easy to read and understand scale. Made from 100% Duralumin, each pulley is manufactured using precision techniques and finished, Intake, a red anodised coating. Sold individually.