Paul,

Maybe yours is not a GSS 341?

The common Walbro pump I have used is not found in any OE application,
as far as I know. I have seen Denso pumps in the configuration you
describe and picture, but the Walbros I have used look like the below
(note visible gears on inlet of the middle pump):

-Chris


I found a disassembled picture:

http://www.racetronix.com/307vs340.html

Those are what the "255 LPH high pressure" models are like. They are
tiny, have low current draw, and cost about $100. Near-ubiquitous for
upgrades on many turbocharged Japanese cars.

-Chris

I think you are right. My part # is GSL393.`
It also has the patent number on it. #4500270
Here is the patent. This version is not the in the tank
version. Ought to suck pretty good.

Here is the patent.

Paul Lamar

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