Air and Fuel› Fuel Pumps, Regulators and Components

Walbro

255 LPH In-Tank Fuel Pump

$98.98

SKU: GSS341

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Walbro GSS341 is an in-tank fuel pump designed as a direct replacement for 1G DSM AWD models. It features a 255 LPH flow rate and is capable of supporting up to 500 HP when used with gasoline.
Show original supplier description
The Walbro GSS341 is an in-tank, electric fuel pump designed for high-performance applications. This 255 LPH unit is built to provide consistent fuel delivery for vehicles requiring higher flow rates than factory components, supporting up to 500 HP on gasoline-powered engines. This specific kit includes the GSS341 fuel pump and the 400-857 installation kit, specifically configured for 1G DSM AWD (All Wheel Drive) vehicles, including the 1990-1994 Eclipse GSX, 1990-1994 Talon TSi, 1990-1994 Laser RS, and 1991-1993 Galant VR4. Please note that this kit is strictly for All Wheel Drive models. Compatibility and safety requirements are critical for this installation. This fuel pump is designed for use with gasoline only; it is not compatible with E85 fuel. Ensure your fuel system is compatible with these requirements before installation.
Vehicle Symptoms
  • Fuel starvation under heavy acceleration
  • Hesitation or stumbling at high RPM
  • Engine cuts out during boost
  • Lean air/fuel ratio under load
  • Reduced power at wide open throttle
Diagnostic Codes
  • P0230 – Fuel pump primary circuit malfunction
  • P0191 – Fuel rail pressure sensor range/performance
  • P0231 – Fuel pump secondary circuit low
Relevant Conversations
  • DSM fuel pump upgrade 255lph
  • Walbro GSS341 install 1G AWD
  • Eclipse GSX fuel starvation fix
  • P0230 code after turbo upgrade
  • 1991 Talon TSi fuel pump replacement
  • Fuel cut under boost DSM
  • Walbro vs stock fuel pump flow rate
  • 1G DSM AWD fuel pump kit
  • Symptoms of failing fuel pump DSM
  • Best fuel pump for 500hp DSM

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandWalbro
Part NumberGSS341
CategoryAir and Fuel
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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