The Walbro GSL392 255LPH High Pressure Inline Fuel Pump is an extremely popular upgrade to vehicles with engine and performance modifications, supporting up to 650 horsepower. Designed to be mounted externally outside the tank and can be coupled with another pump for extra fuel.

The GSL392 is one of the most popular fuel pumps made by Walbro. Typically used in vehicles for racing or performance purposes where higher pressure fuel is necessary.