Walbro GSS350G3 Gen 3 350LPH High Pressure In-Tank Fuel Pump 22mm Center Inlet

Vehicle Fitment

• Universal - compatible with any vehicle equipped with a 39mm straightwall in-tank fuel pump hanger assembly accepting a 22mm center inlet configuration
• Compatible with new or existing in-tank hanger assemblies without modification when inlet and body dimensions match
• Designed for gasoline (petrol) fueled engines - naturally aspirated, turbocharged, and supercharged applications

Fitment Notes

• The GSS350G3 uses a 22mm CENTER inlet - this is its key differentiator from the GSS351G3 (11mm inlet, 180° from outlet) and GSS352G3 (11mm inlet, inline with outlet). Verify which inlet configuration is required for your hanger assembly before ordering.
• This pump is designed for GASOLINE only - NOT compatible with E85, methanol, or high-ethanol blends. Using incompatible fuel voids the warranty.
• OE replacement applications may require upgraded wiring at a minimum - verify wiring capacity before installation.
• Recommended operating voltage is standard vehicle voltage (13.5V). If using an ECU-controlled alternator or voltage booster, limit pump voltage to 16V maximum to prevent gerotor cavitation.
• A 25A fuse is recommended to protect the pump and wiring circuit.
• This listing is for the pump only - installation kit (strainer, wiring connector, and outlet fittings) must be sourced separately.

Features

• Generation 3 (G3) upgraded one-piece outlet design engineered for improved fitting robustness and connector durability over the prior GSS34X generation.
• Proven positive-displacement gerotor pump technology delivers consistent, high-pressure fuel flow without cavitation at standard vehicle voltages.
• 350 LPH flow rate at 40 PSI and 13.5V - a significant improvement over the 255 LPH output of the predecessor GSS340 generation.
• Supports 600+ horsepower at 40 PSI (13.5V) in gasoline applications - suitable for high-boost turbocharged and supercharged builds.
• 39mm straightwall body mounts directly into new or existing in-tank hanger assemblies across a wide range of platforms without modification.
• 22mm center inlet provides a large-diameter, centrally positioned fuel entry point well suited for hanger assemblies designed around this configuration.
• OE-quality construction manufactured to TI Automotive's production standards at their Caro, Michigan facility.
• Made in the USA at TI Automotive's Caro, Michigan manufacturing plant.

Specifications

• Part Number: GSS350G3
• Brand: Walbro / TI Automotive
• Generation: G3 (Third Generation GSS series)
• Pump Type: Universal in-tank, high-pressure
• Flow Rate: 350 LPH (90 GPH) at 40 PSI / 13.5V
• Horsepower Support: 600+ HP at 40 PSI / 13.5V (gasoline)
• Pump Technology: Positive-displacement gerotor
• Body Diameter: 39mm (straightwall)
• Inlet Diameter: 22mm - center inlet configuration
• Recommended Operating Voltage: 13.5V (standard vehicle voltage)
• Maximum Recommended Voltage: 16V
• Recommended Fuse: 25A
• Fuel Compatibility: Gasoline ONLY (not compatible with E85 or methanol)
• Country of Manufacture: United States (Caro, MI)

Included Components

• 1x Walbro / TI Automotive GSS350G3 350 LPH in-tank fuel pump (pump only)

Product Description

The Walbro GSS350G3 is the 22mm center inlet variant of TI Automotive's third-generation GSS series high-performance in-tank fuel pump, delivering 350 LPH at 40 PSI and 13.5V - enough to support over 600 horsepower in gasoline-fueled builds. It is the direct successor to the GSS340 from the G2 generation, retaining the same proven positive-displacement gerotor pump internals while introducing an upgraded one-piece outlet design that improves fitting robustness and electrical connector durability. The center inlet configuration of the GSS350G3 is its distinguishing feature within the G3 family, making it the correct choice for hanger assemblies designed around a 22mm center-positioned fuel entry - as opposed to the GSS351G3 or GSS352G3, which use an 11mm inlet in different orientations.

The 39mm straightwall body diameter is a direct drop-in for compatible new or existing in-tank hanger assemblies without modification. This makes it a straightforward flow upgrade for turbocharged, supercharged, and high-output naturally aspirated applications that have exceeded the capacity of a stock or 255 LPH replacement pump. The gerotor pump design provides consistent pressure delivery across a wide operating range without the pulsation issues associated with turbine-style pumps, making it a reliable choice for both return and returnless fuel system configurations.

This pump is manufactured at TI Automotive's Caro, Michigan facility and is rated to OE quality standards. It is designed for gasoline only - E85, methanol, and high-ethanol fuels are not compatible and will void the warranty. Standard vehicle voltage (13.5V) is the recommended operating point; if a voltage booster or ECU-controlled alternator is in use, cap supply voltage at 16V to avoid gerotor cavitation. A 25A fuse is recommended for circuit protection. This listing includes the pump only - a compatible installation kit with strainer, wiring connector, and outlet fittings must be sourced separately for a complete installation.