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 a conventional ÒVÓ belt (as opposed to the Òdouble VÓ or ÒDuplexÓ belt: Applications: Early 3.8 E-Type Series II E-Type MK I Early MK II. MK X/420G 420 with power steering The other version of this pulley, part number C19521 is wider and has a flat belt surface.