High-Flow 340 LPH Fuel Pump and Fitting Kit for LS Engine Swaps
When converting a 1991 to 2005 GM chassis to an LS powerplant the plumbing for the fuel pump and rail often proves the biggest obstacle and this 340 LPH Fuel Pump and Fitting Kit tackles that challenge. With precision adapters for both return and returnless fuel rails the kit removes the need for custom hard lines and maintains a reliable seal under pressures up to 60 psi. Installation is streamlined by a drop in bracket that secures the pump at the factory mounting point and stainless steel fittings with a calibrated outlet port resist cavitation during sustained throttle. A plug and play wiring harness preserves OEM connector standards and cuts time on the bench or in the garage for a clean, dependable electrical integration.
Precision Engineered Adapters for Return and Returnless Rails
The adapters in this kit are precision machined to provide an exact interface with both return fuel rails and returnless configurations. Each component features tight tolerances and includes O ring seals that resist deformation under thermal cycling. This careful engineering not only prevents leaks at pressures up to 60 psi but also eliminates the need for fabricated hard lines. Shops and home builders can standardize their plumbing procedure and switch between rail styles without additional fittings or adapters. The result is a streamlined installation process and a dependable seal in demanding conditions.
Factory Location Bracket for Secure Pump Alignment
A central feature of this kit is the bracket that installs at the original pump mounting point in 1991 to 2005 GM chassis. Its solid construction aligns the pump perfectly with factory holes, removing the need for drilling or chassis modification. A form lock design ensures that vibration and engine movement cannot shift the assembly out of position. This exact fit preserves chassis integrity and prevents misalignment that can cause premature wear of pump internals. Installers benefit from reduced labor time and a professional fit that maintains OEM geometry.
Stainless Steel Fittings with Calibrated Port for Stable Pressure
All fittings in this assembly are made from marine grade stainless steel to resist corrosion from ethanol blends, moisture, and road salt. An integrated calibrated port maintains back pressure at 60 psi, guarding against cavitation during sustained high throttle. Consistent pressure right at the pump outlet reduces the risk of vapor lock and fuel starvation under extreme driving loads. The durability of stainless steel also extends service life and minimizes maintenance over time. Together, these design elements ensure reliable performance for LS swaps in classic GM chassis.
Plug and Play Harness for OEM Style Electrical Integration
The included wiring harness terminates in an OEM style connector for seamless integration with factory wiring looms. Heavy gauge conductors and an onboard fuse holder meet the current demands of a 340 liter per hour pump without splicing or aftermarket modifications. By matching stock trigger logic, the harness prevents error codes and ensures consistent pump activation under control of the ECU. Clean routing options simplify installation and protect against abrasion or heat exposure. This fully assembled harness delivers a professional grade electrical solution that cuts bench time and troubleshooting.
This kit delivers a precise drop-in fit and dependable performance for your LS engine swap.