High-Flow 340 LPH Fuel Pump and Fitting Kit for LS Engines
When transplanting an LS powerplant into a 91 to 2005 GM chassis, inconsistent fuel flow can undermine performance and reliability. This 340 LPH Fuel Pump and Fitting Kit clarifies every connection by offering a direct in tank installation that pairs precision bulkhead fittings with GM factory outlet adapters. Installation follows a plug and play approach that eliminates custom bracket fabrication and minimizes leak points. Available hardware keeps underframe clearance intact while ensuring consistent fuel pressure under hard acceleration and cornering.
EFI Integration Through In Tank Pump Mount
By positioning the Walbro 255 LPH pump directly inside the factory tank outlet, this kit guarantees a steady supply of fuel under every driving condition. Removing the need for an external booster pump and custom mounting hardware, the in tank configuration minimizes pressure drop and potential leak points. This EFI ready arrangement works in concert with modern engine controls to maintain precise injector pressure, critical for smooth acceleration and consistent performance up to 550 horsepower. The direct mount design also reduces install time by leveraging existing GM ports and wiring harness paths.
Internal Baffling for Consistent Fuel Supply
An integrated baffling system partitions the fuel reservoir into smaller chambers that counteract liquid movement during acceleration, braking and cornering. This ensures the pump inlet remains submerged, preventing air ingestion that can cause hesitation or stalling under load. The reduced slosh behavior also cuts noise when fuel levels are low, an often overlooked benefit that enhances cabin comfort. Whether towing a trailer or pushing hard on a winding road, drivers will experience uninterrupted flow even when the tank is near half capacity.
Side Fill Neck Access Simplifying Refueling
The addition of a side fill neck relocates the fueling point for quicker and more ergonomic access at the pump station. Eliminating the need to crawl into a truck bed or remove panels, this feature speeds up service intervals and streamlines daily use. Designed to interface with stock chassis openings, the filler neck installs without cutting sheet metal or fabricating adapter plates. Builders can preserve the vehicle’s underbody contours while providing a user friendly refuel point.
Compact Footprint Under GM Frame Rails
Measuring 32-1/4 x 20-1/2 x 9-3/4 inches including the mounting flange, the tank slips neatly between the rear frame rails of 1991–2005 GM chassis. Its low profile design keeps ground clearance at factory levels, avoiding interference with suspension components and exhaust plumbing. With precision bulkhead fittings matched to GM factory outlets, installation requires no additional brackets or frame modifications. The result is a clean, professional fitment that preserves underfloor geometry and simplifies troubleshooting down the road.
Built to ensure reliable fuel delivery, this kit offers unmatched consistency under real world driving demands.