Hi guys,
Just sourcing parts to service my engine, and found a bit of price disparity between water pumps listed for an H22A and H23A2... are the two parts interchangeable? It's over £30 for one listed as H22A whereas the H23A pump is £14 shipped

Here's the link so you can see the part
http://bit.ly/zwWU18 - I'm hoping I'm on to a winner here as it'd be nice to save some money!! Would check the pump already fitted to my engine but I'm at work currently and would like to place an order sooner rather than later!
Cheers,
Josh