Walbro GSL392 255 LPH inline fuel pump on a white background
Walbro 255 fuel pump for LS swap with text indicating fuel flow rate on a white background
high pressure EFI inline fuel pump 255 lph on a white background, text indicating horsepower support.
Walbro 255 LPH Inline Fuel Pump
Walbro GSL392 255 LPH inline fuel pump on a white background
Walbro 255 fuel pump for LS swap with text indicating fuel flow rate on a white background
high pressure EFI inline fuel pump 255 lph on a white background, text indicating horsepower support.
Walbro 255 LPH Inline Fuel Pump

Walbro 255 LPH Inline Fuel Pump

GSL392

$110.00
/
Shipping calculated at checkout.

The Walbro 255 LPH Inline Fuel Pump is one of the most trusted high pressure EFI fuel pumps in performance and off-road applications. Designed for universal inline installation, this pump delivers 255 liters per hour of consistent fuel flow to support demanding fuel systems.

Commonly used in LS swaps, boosted street cars, and off-road race vehicles, the is capable of supporting up to 550 horsepower when paired with proper fuel line sizing and fuel rails. 

Includes

  • (1) Walbro GSL392 Fuel Pump
Specifications
  • Flow Rate: 255 Liters Per Hour (LPH)
  • Pump Type: Inline, High Pressure EFI
  • Operating Voltage: 12V
  • Max Horsepower Support: Up to 550 HP (with proper system design)
  • Fuel Type Compatibility: Gasoline, E85 compatible with proper filtration
  • Installation Type: External / Inline
  • Installation Kit can be purchased here.
Fitment
  • Universal EFI applications
  • LS swaps
  • Rock crawlers & Ultra4 cars
  • Street performance vehicles
  • Turbocharged and supercharged builds (within flow limits)

Designed for inline installation outside the fuel tank.

Tech Insight

The Walbro 255 LPH pump has become a benchmark in performance fuel systems because of its balance of flow, pressure capability, and durability.

For best results:

  • Use a 100-micron pre-filter before the pump
  • Use a 10-micron post-filter after the pump
  • Ensure proper wiring with adequate voltage supply
  • Match fuel line size (-6 AN minimum recommended for most LS applications)

Fuel system design is critical — pump performance depends on proper filtration, line sizing, regulator setup, and electrical supply.

If you're building a reliable LS fuel system for off-road abuse, this pump is a proven solution.

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