LS 340 LPH Fuel Pump and Fitting Kit for GM Models
For LS engine transplants into 1991 to 2005 GM chassis inconsistent fuel flow can undermine throttle response and risk stalling which makes the 340 LPH Fuel Pump and Fitting Kit essential for delivering steady pressure to your EFI system. The kit integrates a precision Walbro pump directly at the factory tank outlet while pairing solid bulkhead fittings with GM factory adapters. Installation follows a plug and play setup that removes the need for custom brackets and cuts down on possible leak locations when accelerating or cornering. Each included component preserves underbody clearance and streamlines fuel line routing for a tidy fit that holds pressure at high output.
EFI Integration with Direct Tank Mounting
The kit locates a precision fuel unit inside the factory tank outlet to eliminate the need for an external booster device. Placing the pump at its source reduces pressure loss along the line and minimizes potential leak points. This direct mount design maintains consistent flow under every load and integrates seamlessly with electronic controls to ensure precise injector management for engines up to 550 peak horsepower. By using GM outlet adapters and factory harness paths it cuts installation time and eliminates custom bracket work.
Internal Baffle System for Stable Fuel Delivery
An integrated baffling network divides the reservoir into multiple chambers to keep liquid from sloshing during cornering or heavy braking. This internal partitioning ensures the pump inlet stays covered at all times and prevents air from entering the system, which can cause hesitation or stalling. The slosh control also protects the pump assembly from cavitation damage during aggressive maneuvers. Drivers will notice smooth throttle response even with low fuel levels, while reduced slosh noise provides a quieter cabin experience when the level nears half capacity.
Extended Range and Simplified Refueling
With 18 gallon capacity the kit extends range and cuts down on service stops for long drives or towing tasks. A side fill neck relocates the filler point to an easily accessed opening in the chassis, eliminating the need to remove interior panels or crawl into a bed. This design uses existing frame cutouts so fabricating adapter plates is not required, delivering a clean look while speeding up routine fill ups at the pump.
Compact Footprint for Under Rail Clearance
The tank measures approximately 32 inches long by 20 inches wide by 9 inches tall to slip neatly between the rear frame rails of 1991 to 2005 GM chassis. Its low height preserves under body ground clearance and avoids contact with suspension links or exhaust pipes. Compatible bulkhead fittings align with factory lines so no extra brackets or frame modifications are needed, resulting in a tidy installation that maintains the original under floor geometry. This placement also makes future service and diagnostics easier as all components remain in expected locations.
Built for precise fit and consistent fuel flow in your LS chassis conversion for lasting reliability.