Product Overview

  • Walbro GSS341G3 high‑pressure universal in‑tank fuel pump

Features

  • High‑output in‑tank electric fuel pump for performance fueling
  • Proven gerotor design — reliable and long‑lasting construction
  • Universal fit for many EFI fuel systems and performance builds
  • Offset inlet/outlet orientation (180°) for versatile installation
  • Supports higher flow even at elevated fuel pressures
  • Compact 39 mm body fits many stock hanger assemblies
  • Delivers smoother and more consistent fuel delivery under load
  • Built by Walbro/TI Automotive — industry “gold standard” pump

Specifications

  • Part Number: GSS341G3
  • Pump Type: In‑tank electric fuel pump
  • Fuel Type: Gasoline
  • Flow Rate: ≈255 liters/hour (≈67 GPH at 40 psi)
  • Operating Pressure: ~40 psi nominal (regulated pressure set by vehicle)
  • Rated Horsepower Support: ~>500 hp (varies by application)
  • Maximum Working Pressure: ~120 psi
  • Voltage: 12 V
  • Amperage Draw: ~8.9 A @ 40 psi
  • Inlet/Outlet Size: 5/16″ barbed (offset inlet/outlet orientation)
  • Body Diameter: ~39 mm compact design

Included Components

  • 1x Walbro GSS341G3 high‑pressure fuel pump

Product Description

The Walbro GSS341G3 is a high‑pressure, high‑flow in‑tank electric fuel pump engineered to support demanding EFI applications and performance builds. It delivers approximately 255 liters per hour of fuel flow, making it suitable for engines requiring greater fueling capacity than most stock pumps provide. The proven gerotor‑style design and compact 39 mm body allow it to fit many existing fuel pump hangers without modification.

Featuring a 180° offset inlet/outlet orientation and robust construction, this universal pump is ideal for turbo, supercharged, or high‑output naturally aspirated engines that need improved fuel delivery at elevated pressures. Rated to support over 500 hp in many setups (actual capacity varies by vehicle and supporting plumbing), the GSS341G3 is widely used in performance builds and retrofit applications. Because it’s a universal pump only and not a complete module or sending unit, proper installation—often involving a compatible install kit and appropriate wiring—is essential.



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