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The Walbro GSS342 (255 high pressure pump) is a popular upgrade pump that's capable of supporting applications up to around 500bhp. The performance range of this pump makes them the ideal replacement for stock OEM pumps that are tired and nearing a faulty state in all aspects of cars, especially daily drivers. These pumps are also popular with tuning enthusiasts, where they're praised for their reliability and impressive performance figures from such a small unit.
With years of experience with genuine GSS342's, we know a fake one when we see it. So we've written a blog post specially dedicated on how to spot counterfeit GSS342's, this includes detailed photographs, weights and lots of side by side comparisons. Click here to view
Be aware that some modifications may be necessary and installation should be performed by a professional mechanic only. You MUST flush your fuel tank completely before installation, contamination which leads to overheating is one of the biggest reasons for fuel pump failure. Warranty is void if contamination is found during inspection / opening of a locked up pump.
All GSS342's include a 1 year manufacturers warranty.