Hard anodised aluminium crank pulley and alternator pulley with belt for a 8v/16v TU engine.
It is a four groove pulley and is supplied with a four groove belt
The crank pulley is 113mm diameter and the alternator pulley is 68mm. it is designed to gear down the alternator slightly to reduce power consumption for competition engines.
The kit also includes a new belt and a spacer to fit behind the alternator pulley.
This is not suitable for vehicles with air conditioning.