Inline Fuel Pump for LS Swap: 5 Top Picks Compared

Upgrading to an LS engine is an exciting project, but getting the fuel system right is critical. An inline fuel pump designed for LS swaps ensures your engine gets the consistent pressure and flow it needs to perform reliably.

This guide compares five top-rated inline fuel pump kits and regulators, helping you choose the best setup for your build. We break down features, compatibility, and what each product is best for, so you can make an informed decision.

EVIL ENERGY 58 PSI Fuel Filter Regulator & 300LPH Pump

The EVIL ENERGY kit combines a 58 PSI fuel filter regulator with a high-flow 300 LPH inline pump, making it a complete solution for LS swap EFI conversions. The regulator includes a built-in 10-micron filter element to keep your fuel clean, while the pump delivers up to 300 LPH at 13.5V to support high-horsepower applications. It’s designed for 1999-2014 Chevy V8 engines, including 4.8L, 5.3L, and 6.0L LS-series, and works with 12V DC electronic fuel injection systems.

Installation is flexible, with the regulator suitable for engine bay mounting. The kit includes everything you need to get started, though you may need additional fittings for your specific setup. The pump operates reliably and is built to handle the demands of a performance LS swap. If you want a matched pump and regulator set from a single brand, this is a strong contender.

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• Precise Fuel Control for LS Engine Performance​: EVIL ENERGY LS swap regulator maintains optimal fuel pressure at 58 PSI. The integrated 10-micron filter element ensures clean fuel reaches your engine, protecting it and enhancing performance and longevity.
• High-Flow 300LPH Inline Electric Fuel Pump​: EVIL ENERGY external pump delivers a maximum flow of 300 LPH (at 13.5V) to support high-horsepower applications. It operates reliably under pressure (up to 75 PSI) and across a wide temperature range (-68°F to 194°F).
• Wide Compatibility for Easy EFI Upgrades​: Designed for 1999-2014 Chevy V8 engines (4.8L, 5.3L, 6.0L LS-series). The fuel pump is for 12V DC electronic fuel injection (EFI) systems, and the regulator and pump are compatible with gasoline and diesel fuels.
• Installation Flexibility & Complete Kit​: The regulator is ideal for engine bay mounting to stabilize pressure. The pump is designed for below-tank mounting to use gravity-fed fuel supply. Includes all necessary fittings, adapters, and a mounting bracket for a streamlined installation.
• Package Includes Everything You Need: 1x 58 PSI Fuel Filter Regulator, 1x 300LPH External Fuel Pump, 1x Fuel Pump Bracket, 1x M12x1.5 to AN6 Adapter, 1x AN10 to M18x1.5 Adapter, 1x AN6 to 5/16" Quick Disconnect, 2x AN6 to 3/8" Quick Disconnects, 1x AN6 to 3/8" EFI Quick Disconnect Fitting.

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Dasbecan GSL392 255LPH Inline Pump & 58PSI Regulator Kit

The Dasbecan kit replaces part numbers GSL392-400-939 and 61633737, offering a 255 LPH inline fuel pump and a 58 PSI fuel filter regulator. It’s designed for LS returnless 6AN engine swaps, fitting 1999-2014 Chevy V8 engines like the 5.3L and 6.0L. The pump is built with rugged metal housing to withstand high flow, and the regulator ensures precise pressure for your EFI system.

This kit includes all necessary fittings and mounting hardware, simplifying your installation. The pump meets or exceeds OEM standards, providing reliable performance for your LS swap. It’s a great choice if you need a direct replacement for the GSL392 pump and want a matched regulator. The 255 LPH flow is sufficient for many performance builds, though extreme horsepower applications may require more.

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• Replaces Part Number: Fuel Pump Replaces GSL392-400-939, 400-939, GF822,19239926; Fuel Filter Regulator Replaces 61633737.
• Fitment: This fuel pump and filter regulator kit fits for LS Returnless 6AN Engine Swap with GSL392-400-939 Inline Fuel Pump, including all the necessary fittings and mounting hardware, Pressure: 255 Liters Per Hour (LPH), Fuel pressure: 58 PSI, AMP: 20, Fits most EFI applications including turbo and supercharged.
• Compatible with: 1999-2014 Chevy V8 5.3L/325 small block Gen III IV, LS based engines; 1999-2014 Chevy V8 4.8L/294 small block Gen III IV, LS based engines; 1999-2014 Chevy V8 6.0L/364 small block Gen III IV, LS-based engines
• Feature: Manufactured using high-quality materials, meet or exceed OEM standards, rugged metal housing including inlet and outlet to withstand high flow pressure, ensuring optima high-pressure performance.
• Package Includes: 1x GSL392 Inline Fuel Pump, 1x Fuel Filter Regulator, 1x 6AN to 3/8" Push-In for EFI Fitting, 2x Black LS1/LT1 -6AN to 3/8" Fitting, 1x Black LS1/LT1 -6AN to 5/16" Fitting, 1x Installation Kit.

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Yinlowa GSL392 Inline Fuel Pump & 58 PSI Regulator Kit

The Yinlowa kit features a GSL392 high-pressure inline fuel pump and a 58 PSI fuel filter regulator with 6AN adapter fittings. It’s designed for EFI applications, including turbo and supercharged setups, and fits LS-based engines from 1999-2014. The pump delivers stable, safe high-pressure fuel for racing or performance vehicles, while the regulator ensures 58 PSI (4 BAR) to your fuel rail.

This kit replaces part numbers 61633737, 001834890, and others, making it a versatile option. The pump is built to handle higher pressures, making it suitable for forced induction builds. The included 6AN fittings simplify connection to your fuel lines. If you’re planning a boosted LS swap, this kit’s ability to handle higher pressures is a key advantage.

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• REPLACEMENT 58 PSI FUEL FILTER REGULATOR – Fuel pressure regulator filter kit comes with 6AN adpater fittings for LS Swap , which can deliver 58 PSI (4 BAR) to your fuel rail and return unused gas to the tank. Besides, it can ensure the clean fuel is delivered properly to your engine with a 10 micron fuel filter, which play an important role in protecting the daily operation of the engine, and extending the engine service lifespan.
• GSL392 HIGH PRESSURE FUEL PUMP – LS Inline fuel pump is designed to start higher-pressure fuel racing or performance-purpose vehicles stably and safely, which can help to meet the requirements of most modern turbocharging applications. At 80 PSI, Yinlowa 255 lph high pressure fuel pump can flow around 132 liters (35 gallons) per hour; At that same 80 PSI the equivalent HP (high pressure) fuel pump can flow over 210 liters (50 gallons) per hour; Pressure: 255 (LPH) Liters Per Hour; AMP: 20.
• FITMENTS – GSL392-400-939 Inline Fuel Pump fits EFI applications including turbo and supercharged, variety of pressures and flows available, including high pressure performance; 58 PSI Fuel Pressure Regulator AN-6 Fittings for LS Swap EFI Conversion is compatible with Chevy 1999-2014 V8 5.3L/325 Chevy small block Gen III/IV (LS-based engines); Chevy 1999-2014 V8 4.8L/294 Chevy small block Gen III/IV (LS-based engines); Chevy 1999-2014 V8 6.0L/364 Chevy small block Gen III/IV (LS-based engines).
• REPLACE PART # – Fuel Filter Regulator Replaces 61633737, 001834890, 1834890 86737, FF881DL, G11290, G8836, GF1822, GG299, GG-299, GF336, G3737, 33737, 3737, 73737, PF5493, F55493, WIX 33737, 10299146, 19239926, GF822, TBSS intake, NNBS Intake, L92 Intake, returnless, LS1, LS2, LS3, LS6, LQ4, LQ9, LM7, L99, L76, LSX, 4.8, 5.3; Adapter Fitting Replaces 644123, 644113; Fuel Pump Replaces GSL392-400-939 ; GSL392400939; GSL392; 400-939. Please check fitments & part number before ordering, Thanks!
• OEM DESIGN, DIRECT FIT – With mounting bracket and rubber insulator, fuel pressure regulator filter kit can be installed easily in the place between the tank and the engine or in the engine compartment. After simple installation, this filter help to create a returnless fuel supply for LS engine swaps and electronic fuel injection conversions. The bypass regulator passes excess fuel back into the tank then the pump can run freely. Save time and hundreds of dollars by replace the parts yourself.
• WHAT YOU’LL GET – 1 x fuel filter/regulator, 1 x 3/8'' EFI push on lock fitting for inlet, 1 x 5/16'' EFI push on lock fitting for return, 1 x 6AN male to 3/8 male push on EFI fitting for outlet, 1 x GSL392 Inline fuel pump; 12-MONTH Warranty and LIFETIME Technical Support; If this GSL392-400-939 Fuel Pump Kit ever fails on your EFI applications, please don’t hesitate to contact us for the replacement. True hassle-free shopping experience 🙂

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EVIL ENERGY LS Swap Fuel Filter Regulator Kit with PTFE Hose

This EVIL ENERGY kit includes a 58 PSI fuel filter regulator, a 300 LPH external inline pump, and a 25-foot PTFE fuel line with 6AN fittings. It’s designed for 1999-2014 Chevy V8 LS engines, delivering up to 300 LPH at 43 PSI. The built-in 10-micron filter protects your engine, and the PTFE hose is durable and flexible, suitable for gasoline, race gas, and diesel.

The kit comes with a 60mm bracket clamp for mounting the pump. The PTFE line resists fuel degradation and handles high temperatures, making it ideal for long-term reliability. This all-in-one package simplifies your LS swap fuel system, providing pump, regulator, and hose in one purchase. It’s a comprehensive solution if you need everything in one box.

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• Perfect for LS Swap: Designed for 1999-2014 Chevrolet V8 4.8L/5.3L/6.0L LS-based engines. The EVIL ENERGY LS Swap Fuel Filter Regulator Kit includes a 58PSI regulator and a 6AN PTFE nylon braided fuel line kit, ideal for EFI LS system and EFI conversion projects.
• High-Flow Fuel Pump: EVIL ENERGY External Inline Fuel Pump delivers up to 300LPH at 43PSI (13.5V), ensuring consistent fuel flow. Compatible with gasoline, pump gas, race gas, diesel, E85, and alcohol/ethanol. Operating pressure: 75PSI.
• Built-In 10 Micron Filter: The LS swap fuel regulator features a built-in 10-micron filter to ensure clean, reliable fuel delivery to your engine, helping protect vital components from contaminants.
• Durable and Flexible Fuel Line Kit: Includes a 25FT PTFE fuel line (5/16" ID, 0.465" OD), capable of withstanding extreme temperatures from -76℉ to 446℉ and pressure up to 3000 psi (bursting pressure: 10000psi), ensuring long-lasting and safe operation.
• Complete Kit for Easy Installation: The kit includes 6AN adapter fittings and everything needed for installation, providing a straightforward and professional solution for your LS engine swap or EFI conversion project.

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EVIL ENERGY External Inline Fuel Pump 300LPH Universal

This EVIL ENERGY external inline fuel pump delivers 300 LPH at 43 PSI and 13.5V, with an operating pressure of 75 PSI. It’s designed for 12V DC EFI systems and is compatible with gasoline, pump gas, race gas, and diesel. The pump is universal, so it can be used in various applications beyond LS swaps, but it works well for LS conversions when paired with a separate regulator.

Installation requires mounting the pump below the tank for gravity-fed fuel flow. Instructions are included, but you’ll need to source your own regulator and filter. This pump is a good option if you already have a regulator or want to build a custom fuel system. Its high flow supports high-horsepower builds, but it’s not a complete kit.

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• Application: This fuel pump is designed to fit 12V DC EFI systems only.
• Parameter: Test flow: 200 LPH (at 75 PSI and 12V), 255 LPH (at 43 PSI and 12V), and 300 LPH (at 43 PSI and 13.5V). Operating pressure: 75 PSI. Operating temperature range: -68°F to 194°F.
• Medium: The inline fuel pump is compatible with gasoline, pump gas, race gas, and diesel.
• Installation: It is recommended to install the fuel pump below the tank to ensure gravity-fed fuel flow from the tank. Installation instructions are included.
• Package Contents: The package includes 1 × fuel pump, 2 × gaskets, 1 × washer, 2 × nuts, 2 × insulated terminals, 1 × inlet 10AN adapter, 1 × outlet 6AN adapter, 2 × rubber connection covers and 1 × user manual for easy installation.

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Buyer’s Guide: What to Consider

Consider these key factors when choosing an inline fuel pump for your LS swap to ensure reliable performance and easy installation.

• Flow Rate: Choose a pump with enough flow for your horsepower goals. 255 LPH suits most builds, while 300 LPH supports higher power.
• Pressure Regulation: LS swaps need 58 PSI for EFI. Kits with a built-in regulator simplify installation and ensure correct pressure.
• Compatibility: Ensure the kit fits your engine year and size. Most listed fit 1999-2014 Chevy V8 LS engines.
• Fittings and Hardware: Look for kits that include 6AN fittings and mounting brackets to save time and money on additional parts.
• Fuel Type: Check compatibility with your fuel. Most pumps work with gasoline and race gas; some also handle diesel.

Conclusion

Choosing the right inline fuel pump for your LS swap depends on your build’s power goals and whether you want a complete kit or a standalone pump. For most builds, a kit with a 58 PSI regulator and 255-300 LPH pump offers the best balance of performance and convenience.

If you need a complete solution, the EVIL ENERGY kit with PTFE hose is a great all-in-one choice. For boosted applications, the Yinlowa kit handles higher pressures well. Evaluate your needs and pick the kit that fits your project.