My water pump went this summer. I called my dealer and they told me I had to get to water pump, couldn't get just the seal. After looking at the service manual I called another Honda dealer. He found the mechanical seal for me. It cost me about $90 total: seal, all o-rings, oil, coolant and to have someone put in the new seal. Just thought I would pass that on to anyone who has an 03 that hasn't replaced the water pump yet.
Does anyone know where to get the new style weep hose for the pump?