re: Kubota parts list
Ryan,
I have used that online catalog site several times, also usually using L345. As I'm sure you know, the L345 used a V1501 block. My engine (and probably yours, too) is a V1502. (Mine is Number V1502-18152.) They are similar and share most parts, but you must be careful to check whether the specific part in the catalog seems to match your engine. That site is for Kubota tractors and there is no similar site that I have found for engines which were not ever used in tractors, such as our V1502. Universal/Westerbeke must like it that way because they have such a HUGE markup on their repackaging, renumbering and selling of Kubota parts. The V1502 was used in some sort of forklift or similar lift vehicle as well as by Universal. Also, the Kubota parts dealers are divided into tractor dealers and other divisions. The tractor dealers do not have catalogs for engines not used in the tractors. All of their computer lookups (at least in my local Kubota dealership) are based on tractor model number.
Also, if you need a tractor part for your engine, often an online tractor store at Ebay may have it at much less than Kubota. I bought a brand new water pump (the big belt driven centrifugal one that looks like a tongue on the front of the engine) from Ebay along with a gasket for $70. At Marine Parts Direct through Torresen Marine, the cost of these two parts is $722.92! (I just looked.) At Kubota the pump and gasket were quoted at about $130. All of these are the identical Kubota part. Shop carefully!
Mike