Best External Fuel Pump For Fuel Injection: 12V EFI Options

#1 · Best Overall

1. EVIL ENERGY 300 LPH Bracket Pump

• Weight: 1.29 kg
• Body Material: Metal
• Outlet Connection Size: 6 millimeters
• Inlet Connection Size: 10 millimeters

Best for: 12V EFI high-flow installations.

Why it ranks #1: Its 12V EFI fit and stated 200 LPH at 75 PSI, 255 LPH at 43 PSI, and 300 LPH at 13.5V provide useful flow context.

A stated maximum flow of 300 LPH gives this EVIL ENERGY inline pump a high-flow option for 12V DC EFI systems. Its test figures also show how flow changes with pressure and voltage, helping buyers weigh the pump against their system’s operating demands rather than relying on the maximum figure alone.

The pump is rated at 200 LPH at 75 PSI and 12V, and 255 LPH at 43 PSI and 12V; the 300 LPH figure is at 43 PSI and 13.5V. That distinction helps set realistic expectations when matching it to an EFI setup. Its metal body and 10 mm inlet and 6 mm outlet provide defined connection dimensions. EVIL ENERGY recommends mounting it below the tank to support gravity-fed delivery.

Skip it if you need an explicitly listed 12V 300 LPH test figure; the CarBole 10103174-P lists the same maximum-flow voltage and pressure conditions, so compare its stated specifications.

For a 12V EFI installer seeking a high-flow external pump for gasoline, race gas, or diesel, this offers defined flow and connection details. Plan for below-tank mounting, and account for the 13.5V condition behind its maximum-flow figure.

Listed on Amazon as: EVIL ENERGY External Inline Fuel Pump 300 LPH 12V with 60mm Bracket Black

#2 · Best 3/8-Inch Fittings

2. EVIL ENERGY 300 LPH Inline Pump

• Weight: 1.17 kg
• Body Material: Alloy Steel
• Outlet Connection Size: 0.38 in
• Inlet Connection Size: 0.38 in

Best for: EFI systems with matched ports.

Why it ranks #2: This 12V EFI pump lists 200 LPH at 75 PSI and 255 LPH at 43 PSI, with 3/8-inch inlet and outlet connections.

Equal 0.38-inch inlet and outlet connections distinguish this EVIL ENERGY inline pump, giving installers a consistent stated port size at both ends. Its maximum 300 LPH rating makes it a high-flow choice for 12V DC EFI systems, with flow figures that vary according to pressure and voltage.

At 12V, the pump is rated at 200 LPH at 75 PSI and 255 LPH at 43 PSI; 300 LPH is specified at 43 PSI and 13.5V. Those separate conditions help buyers compare its output with their fuel-system requirements. The alloy-steel body and matching 0.38-inch ports make the connection dimensions clear during planning. EVIL ENERGY recommends locating the pump below the tank to support gravity-fed fuel flow.

Skip it if you need a bracketed inline kit with included fuel-line adapters and a regulator; the Yinlowa 80005700 lists those components for an LS-swap installation.

Choose this for a 12V EFI setup where equal 0.38-inch port dimensions suit the planned connections and the listed fuel compatibility matches. Its maximum-flow figure depends on 13.5V, and the recommended placement is below the tank.

Listed on Amazon as: EVIL ENERGY External Inline Fuel Pump 300 LPH High Flow 12V Universal

#3 · Best Stainless Body

3. CarBole 300 LPH Inline Pump

• Body Material: Stainless Steel
• Outlet Connection Size: 0.25 in
• Inlet Connection Size: 0.63 in

Best for: Gasoline and diesel EFI systems.

Why it ranks #3: Its stainless-steel body and 200 LPH at 75 PSI and 255 LPH at 43 PSI suit buyers comparing high-flow 12V EFI options.

Compatibility with both gasoline and diesel gives the CarBole 10103174-P a clearly stated fuel range for 12V EFI installations. Its maximum flow reaches 300 LPH under specified voltage and pressure conditions, while the listing cautions against alcohol and E85 fuels because they may reduce pump working life.

CarBole lists 200 LPH at 75 PSI and 255 LPH at 43 PSI, with 300 LPH available at 43 PSI and 13.5V. These operating points help buyers distinguish the maximum from the 12V figures. The stainless-steel body provides a stated material choice, and the pump is an external inline unit, so it does not need to sit inside the tank. The listing recommends using a pre-filter and specifies 10AN inlet and 6AN outlet connections.

Skip it if you use E85 or alcohol fuel; the EVIL ENERGY KT04026-AMZ1 lists compatibility with gasoline, pump gas, race gas, and diesel.

This is suited to a 12V EFI build using gasoline or diesel, with a pre-filter and connections matching its 10AN inlet and 6AN outlet. Avoid it for alcohol or E85 use, which the listing cautions may reduce working life.

Listed on Amazon as: CarBole Universal Electric External Inline Fuel Pump, 12V 300LPH High Flow Rate, with Mounting Bracket Clamp

#4 · Best Adapter Included

4. Gautory 300 LPH Inline Pump

• Weight: 3 lb
• Body Material: Plastic
• Outlet Connection Size: 0.38 in
• Inlet Connection Size: 0.38 in

Best for: Below-tank 12V EFI installs.

Why it ranks #4: The 12V EFI pump lists flow at 75 and 43 PSI, recommends mounting below the tank, and includes an AN6-to-M12 adapter.

A supplied AN6-to-M12-by-1.5 adapter gives the Gautory 044 pump a specific connection option alongside its mounting bracket. Its stated maximum flow of 300 LPH targets high-flow 12V EFI installations, and the manufacturer recommends below-tank placement to improve conveying efficiency and prevent backflow.

The pump’s flow ratings are 200 LPH at 75 PSI and 12V, 255 LPH at 43 PSI and 12V, and 300 LPH at 43 PSI and 13.5V. Those conditions help buyers compare output with system demands instead of treating the maximum as a constant. Its 75 PSI operating pressure and -68°F to 194°F temperature range add useful operating limits. The included bracket and adapter support installation planning, with below-tank mounting recommended.

Skip it if you need a stated 300 LPH maximum without the listed 13.5V condition; the EVIL ENERGY KT04002-HW also specifies its maximum at 13.5V, so compare its port dimensions.

Choose this for a 12V EFI installation where the included bracket and adapter suit the planned connections and below-tank mounting is workable. Its maximum flow requires 13.5V, so use the 12V test figures when assessing fit.

Listed on Amazon as: 044 External Inline Fuel Pump 300LPH High Flow Universal with Bracket Blue

#5 · Best LS Swap Kit

5. Yinlowa 255 LPH Pump Kit

• Weight: 0.92 kg

Best for: LS swap fuel-system kit.

Why it ranks #5: This 255 LPH inline kit includes a 58 PSI fuel filter regulator and adapters for 3/8-inch supply and 5/16-inch return lines.

A listed 58 PSI fuel-filter regulator sets this Yinlowa kit apart for buyers assembling an LS-swap fuel system. Alongside the 255 LPH inline pump, the package includes fuel-line and return-line adapters, bringing several named connection components together for a more coordinated installation workflow.

The kit combines an external inline pump with a 58 PSI fuel filter regulator, so the regulator is part of the supplied component set rather than a separate listed purchase. A 3/8-inch fuel-line adapter, 5/16-inch return-line adapter, and 6AN-to-3/8-inch adapter provide stated connection options for planning the plumbing. The 255 LPH pump and GSL392 replacement reference help identify the kit’s intended comparison point, though the supplied specifications do not give additional pressure-flow data.

Skip it if you need detailed pressure-dependent flow figures before selecting a pump; the Pindex fuel pump lists flow at two operating pressures.

For an LS-swap installer wanting a pump, 58 PSI regulator, and several named adapters in one kit, the supplied components simplify parts planning. Check that the regulator pressure and adapter sizes match the intended fuel-system layout.

Listed on Amazon as: Yinlowa 255LPH Inline Fuel Pump Kit, Replaces GSL392, 58 PSI LS Swap

#6

6. Voniter GSL392 255 LPH Pump

Best for: 255 LPH all-metal EFI builds.

Why it ranks #6: Its 255 LPH external design is listed for 12V and EFI applications, with a stated 15–120 PSI range and final pressure set by regulator.

An all-metal shell and metal inlet and outlet distinguish the Voniter GSL392 inline pump for buyers prioritizing metal construction in an external EFI installation. Its stated 255 LPH flow and 15–120 PSI operating range, with final pressure set by a regulator, define the core operating information supplied.

The pump’s 255 LPH rating gives buyers a stated flow figure, while its 15–120 PSI operating range accommodates a range of pressure requirements with final fuel pressure set by the regulator. A minimum voltage of 12V and external inline design clarify the installation format and power requirement. The listing says it fits most EFI applications, including turbo and supercharged setups. Its all-metal shell and metal inlet and outlet are specified for tough operating conditions.

Skip it if you need flow figures tied to specific pressure and voltage conditions; the EVIL ENERGY KT04026-AMZ1 lists three such test points.

This suits an EFI installer seeking a 255 LPH external pump with metal inlet and outlet construction, including listed turbo and supercharged applications. Factor in the regulator’s role in setting final pressure and the absence of pressure-specific flow figures.

Listed on Amazon as: GSL392 GSL392-400-939 Inline Fuel Pump 255LPH High Pressure Universal External Pump with Install Kit

#7

7. Pindex 116 PSI Inline Pump

• Weight: 0.94 kg
• Body Material: Copper
• Outlet Connection Size: 0.25 in
• Inlet Connection Size: 0.5 in

Best for: High-pressure replacement applications.

Why it ranks #7: It gives flow at two high-pressure points: 120 LPH at 87 PSI and 100 LPH at 101.5 PSI, with a 72.5–116 PSI range.

A stated operating range reaching 116 PSI makes the Pindex pump relevant to buyers prioritizing pressure over a 300 LPH maximum-flow claim. Its extensive listed replacement-part references help identify potential application matches, while the 12V electric design targets fuel-injection systems that suit its pressure and flow ratings.

Pindex specifies 120 LPH at 6.0 bar and 100 LPH at 7.0 bar, giving buyers two pressure-and-flow points to compare with their system needs. The 5–8 bar operating range reaches 116 PSI, while the 0.5-inch inlet and 0.25-inch outlet define connection sizes for installation planning. Its included mounting bracket clamp supports external mounting. Check the listed replacement references against the intended application before choosing this pump.

Skip it if you require a stated 300 LPH maximum-flow pump; the EVIL ENERGY KT04002-HW lists that maximum at 43 PSI and 13.5V.

This suits an installer matching a high-pressure 12V injection application to Pindex’s listed replacement references and port sizes. Its flow figures are 100–120 LPH at the stated pressures, so compare those values with the system’s requirements.

Listed on Amazon as: Pindex Universal External In Line Fuel Pump With Mounting Bracket Clamp,116 PSI High Pressure 12V Electric Pump Injection Systems Compatible with 0580464070 0580453911 0580463017 0580464023,Red

#8

8. Dyno Racing 125 PSI Pump

• Weight: 1.5 lb
• Body Material: Alloy Steel, Brass
• Outlet Connection Size: 0.25 in
• Inlet Connection Size: 0.5 in

Best for: High-pressure part-reference matching.

Why it ranks #8: This external replacement pump lists 135 LPH at 45 PSI and a maximum pressure of 125 PSI, plus a broad part-number cross-reference.

A maximum pressure rating of 8.5 bar, or 125 PSI, makes the Dyno Racing pump a pressure-focused option for external fuel-injection installations. Its long list of replacement references, including 0580464070, gives buyers specific identifiers to compare when sourcing a pump for a compatible application.

The stated flow is 135 liters per hour at 3 bar, or 45 PSI, which pairs a concrete output figure with its operating pressure. Its maximum pressure of 8.5 bar helps buyers evaluate pressure requirements, while the 0.5-inch inlet and 0.25-inch outlet clarify the connection dimensions. The alloy-steel and brass construction and gerotor style are also specified. Match the replacement references and flow point to the intended setup before installation.

Skip it if you need several pressure-specific flow figures for comparison; the Pindex fuel pump lists output at both 6.0 and 7.0 bar.

This suits buyers matching a high-pressure external pump to one of its extensive listed replacement references. Its 135 LPH figure applies at 3 bar, so confirm that this stated operating point and the port sizes suit the planned fuel system.

Listed on Amazon as: Dyno Racing High Pressure Fuel Pump Universal External in Line fuel pump 12V Electric Fuel Injection Pump Compatible with 0580464070 0580453911 0580463017 0580464023 0580463011

#9

9. CarBole 116 PSI Inline Pump

• Body Material: Plastic, Rubber
• Outlet Connection Size: 0.25 in
• Inlet Connection Size: 0.5 in

Best for: Aftermarket systems to 250 bhp.

Why it ranks #9: Its stated 120 LPH at 87 PSI and 100 LPH at 101.5 PSI are useful for matching pressure, though the listing says up to 250 bhp.

A stated fit for turbo and non-turbo gasoline injection systems up to 250 bhp gives this CarBole pump a defined application range. Its 5–8 bar operating pressure and replacement reference 0580464070 help buyers compare it with aftermarket setups, while its external design avoids in-tank mounting.

The pump delivers 120 LPH at 6.0 bar and 100 LPH at 7.0 bar, figures that help clarify its output at higher pressure. A 0.5-inch inlet and 0.25-inch outlet provide connection dimensions for plumbing plans, and the listing identifies turbo and non-turbo gasoline injection use up to 250 bhp. It replaces 0580464070 and others but is not OEM, so buyers should treat the reference as an aftermarket replacement lead rather than an OEM designation.

Skip it if you need a pump explicitly listed for diesel as well as gasoline; the CarBole 10103174-P specifies both fuel types.

This suits an aftermarket turbo or non-turbo gasoline injection setup within the listed 250 bhp range, especially when the replacement reference is relevant. It is not OEM, and its stated application boundary makes power and fuel type important checks.

Listed on Amazon as: CarBole External In Line Fuel Pump: 116 PSI High Pressure Unversal 12V Electric Pump Injection Systems Replacement for 0580464070 With Mounting Bracket Clamp (Black)

#10

10. JDMSPEED High-Pressure Pump

• Weight: 0.85 kg
• Body Material: Alloy Steel, Brass
• Outlet Connection Size: 0.25 in
• Inlet Connection Size: 0.5 in

Best for: Adaptable external pump installs.

Why it ranks #10: This universal external injection pump lists a 15–90 PSI range and 1/2-inch inlet, but provides no flow figure at a specified pressure.

A supplied mounting clamp and connection hardware make the JDMSPEED pump a practical candidate for an external installation that may need adaptation. Its listing states that it does not mount inside the tank, while a 15–90 PSI pressure range leaves final fuel pressure to the regulator.

The external inline layout avoids an in-tank mounting location, and the included clamp and rubber connection covers support the physical installation workflow. Its 0.5-inch inlet and 0.25-inch outlet establish the listed port dimensions, while the stated 15–90 PSI range means the regulator sets final pressure. JDMSPEED explicitly notes that some applications require adapting, so use the supplied connection details and the intended vehicle setup to plan the installation rather than assuming a direct fit.

Skip it if you need a pump explicitly specified for 12V DC EFI with flow figures at defined pressures; the EVIL ENERGY KT04026-AMZ1 provides those ratings.

This fits buyers planning a universal external installation and comfortable adapting connections where needed. Its external layout and included clamp support mounting, but the regulator determines final pressure and the port dimensions should suit the planned plumbing.

Listed on Amazon as: Universal External In Line Fuel Pump High Pressure With Mounting Bracket Clamp 12V Gasoline Fuel Injection Pump Replacement 0580464070 0580453911 0580463017 Red Electric Injection Systems