Product images and videos 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.

Sale

Air and Fuel› Fuel Pumps, Regulators and Components

Walbro

255 LPH Fuel Pump

Name: 255 LPH Fuel Pump
Brand: Walbro
SKU: GSS342-400-791

$205.44 $79.79 Save $125.65

SKU: GSS342-400-791

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Walbro 255 LPH fuel pump is an in-tank pump designed for high horsepower builds. It offers a flow rate of 255 liters per hour and supports up to 600 horsepower.

Show original supplier description

The Walbro 255 LPH in-tank fuel pump, part number GSS342 and kit 400-791, is engineered to provide increased fuel flow for high-horsepower applications. With a flow rate of 255 liters per hour and the capability to support up to 600 horsepower, this pump is suitable for demanding engine conditions. The complete installation kit ensures a straightforward and hassle-free installation process. It includes essential components such as two hose clamps, a new fuel hose, a fuel filter, a rubber stop, and a plug-and-play wiring pigtail. This comprehensive kit simplifies the upgrade or replacement of your vehicle's fuel pump. This fuel pump is specifically designed as a direct replacement for 2002-2007 Subaru WRX and 2004-2007 Subaru STI models. It operates within a fuel pressure range of 25-70 psi, ensuring reliable fuel delivery for boosted engines. Owners seeking to maximize power and reliability in their performance Subaru vehicles will find this Walbro fuel pump and kit to be a quality solution.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand	Walbro
Part Number	GSS342-400-791
Category	Air and Fuel

5,000+ Trusted brands

1M+ Enthusiasts

5M+ Parts sold

(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy