Paraut and ATP both have cast iron too. All of those pumps have better seals and bearings. You don't just throw them away every timing belt change.
Cardone has been available for remanufactured cast iron pumps. Two Paraut pumps I just looked at had that pin in the side. Never opened one up, but it looks like they are made to be rebuilt.
Edited by Quidam, 03 November 2012 - 05:47 PM.