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Universal Inline Walbro 255 LPH Fuel Pump

GSL-392 and 400-939
This brand new, GENUINE WALBRO 255LPH High Pressure External In-line fuel pump can support over 500hp (at the crank) when supplied with 13.5V!

You will receive one GSL-392 255 LPH Fuel Pump and one 400-939 installation kit, which is a universal install kit for this inline external fuel pump.
Was: $179.00
Sale: $119.99
Save: 33%
Save: $59.01

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We purchase directly from the only Authorized Walbro High Performance Warehouse
Wholesale Distribution available, contact us for details and pricing!

This pump will fit every model, type or style for every vehicle listed and can flow anywhere from 0-115 psi, which is determined by your fuel pressure regulator. This is an aftermarket performance fuel pump and some small modifications may be needed. If you receive the pump and have read the included directions, but still have questions, please email us for install help. All of our pumps are always in stock and will often ship the day of payment.

Remember, having too big of a pump is not a problem, but in some applications with an OEM stock regulator you may need to upgrade the regulator to avoid issues with too much flow for the OEM components. Return style fuel systems, such as all the vehicles these pumps work with, have any extra fuel returned to the fuel tank through the return fuel line. Because of this, as large a pump as the stock lines can support is fine, even with a stock engine!

Boosted applications that see higher fuel pressures can still make 500 hp with this pump, but not when over 90 psi because the fuel heats up and can cause problems. Also, a fuel pump can't pump when it doesn't get enough voltage. If you are running high horsepower in the 450+ range you should upgrade your wiring and relay to support your new high flow fuel pump properly or your fuel pump may suffer low flow rates due to low voltage if your stock wiring is too thin and relay too weak.

Walbro Warranty Information:
Walbro fuel pumps do not have a warranty, if you would like a fuel pump with a 1 year warranty you can purchase any of our TREperformance 255LPH fuel pumps which have a 1 year free replacement warranty.


  • GSL-392 and 400-939
  • GSL-392 and 400-939
  • Walbro
  • New


Shipping Information

  • Item Requires Shipping
  • 2.0 lbs.
  • W5.0000” x H5.0000” x L5.0000”
  • Free Basic Shipping

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