The circulation water pump went out on my boat this year, so instead of doing the easy thing and buying it direct from a Volvo distributor, I decided to see if I could get one from the local auto parts house. Short story, after searching for quite a while, I found it. It turns out that it is from a 1958 Chevrolet Biscayne, with a 283 in it. So for all of you out there like me, who dont want to pay full Volvo price for things, add this one to your parts list. AutoZ*** PN CWP373, price 31.99 with a lifetime warranty! They also have this pump in a Heavy duty model AutoZ*** PN CWP-373HD, price 69.99, and also an ALuminum Heavy Duty Model AutoZ*** PN CWP-373HDA, price 139.99.