Hi,<br /><br />I need to buy an impeller kit and thermostat (as well as the related o-ring and gasket) for my 4.3. After looking around on all the parts websites and having them give me different part numbers for everything I want I've become a little confused. My engine's serial number is 4012083031, and I've assumed it to be a B revision of the GL series because that's what is stated on the manual. Stated below is what I am looking to buy, if Don or anyone "in the know" could run a check and make sure these are the right parts I would apprecitate it. <br /><br /><br />3862567 IMPELLER KIT (Volvo Penta) <br />3856961 THERMOSTAT (Volvo Penta) <br />3852071 O-RING (Volvo Penta) <br />3852111 GASKET (Volvo Penta) <br />7743365 SERVICE MANUAL (Volvo Penta)<br /><br />Thanks a bunch!<br /><br />Dan<br /><br />p.s - I'd look at the tag on the engine, but the boat is 200 miles away