H22a rear balancer pulley - supplier, please?

[Angus]

<edit>Appears the part I'm after is the rear balance belt pulley, that plugs into the oil pump.

Turns out the weep of oil I was geting from the LHS of my engine was the oil pump starting to drip.

Can anyone suggest a supplier that doesn't charge Honda prices for a replacement? I'd thought Import Car Parts, but they don't have it in their list.

Also - this is an H22a BB4. Anyone know if other H22a series engines have an identical pump, or any other engines such as H23 etc come to that?

More specifically, the bit covered by "2" in the picture below ...


Thanks!