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Which Walbro Fuel Pump?

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I am looking to install a 255lph Walbro fuel pump into my JDM Legacy 2.0L GT MY04 but am a little unsure as to which model to buy.


I can see there are typically three models to choose from:

- GSS340

- GSS341

- GSS342


...I have found a guide on this forum how to fit a Walbro GSS342, which is very useful, but not sure if this is only applicable to the USDM cars or if it also covers the JDM cars?


Also, out of interest does anyone know what the differences are between these pumps? I can't seem to find any details of differences on the internet?





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