When we decided to manufacture this part ourselves, the aim was to greatly increase quality over original parts, even if we could not reduce the price. This pulley is beautifully CNC-machined and powder coated; it uses top-quality sealed bearings in place of the original unshielded bearings that allowed water ingress and thus speedy bearing failure. You will not find a better quality pulley. This version fits cars with the Double V or Duplex belt (as opposed to a conventional V-belt): later 3.8 E-Type, 4.2 Series I E-Type, later MK II, 3.8S. This pulley has a flat bottom as per original.