CarBole Universal External Inline Fuel Pump — 12V 300LPH, Mounting Bracket & 10AN/6AN Adapters

CarBole's Universal 12V External Inline Fuel Pump is a high-flow, externally mounted EFI pump rated up to 300 LPH that includes mounting hardware and inlet/outlet adapters for fast installation.

This compact electric pump is designed for electronic fuel injection (EFI) systems on gasoline and diesel vehicles, delivering strong flow and stable pressure for turbocharged or modified engines. It comes with a mounting bracket, inlet and outlet fittings (10AN inlet, 6AN outlet), a one-way check valve, gaskets and wiring terminals so you can install it outside the tank without complex in-tank work. Because the pump is optimized for DC 12V systems and conventional fuels, avoid running it on high-alcohol blends such as E85 to preserve service life.

How much flow and pressure can I expect from this pump?

The CarBole pump is built for performance: it reaches a maximum flow of 300 LPH at 43 PSI and produces tested flows of 255 LPH at 43 PSI and 200 LPH at 75 PSI. Those numbers make it suitable for a wide range of higher-horsepower street and race applications where a reliable external feed is needed. Keep in mind actual on-vehicle flow depends on fuel line size, filter condition and system backpressure.

• Max flow: 300 LPH at 43 PSI
• Tested flows: 255 LPH @ 43 PSI, 200 LPH @ 75 PSI
• Nominal supply: DC 12V power
• Best used with an inline pre-filter to preserve pump life

Can I install the pump myself and what’s included?

Yes — the unit ships with the main hardware to get a standard external installation done quickly. The kit includes a mounting bracket, inlet and outlet adapters, gaskets, nuts and electrical terminals, plus a one-way check valve to maintain system prime. For safety and longevity, mount it below the fuel tank so fuel remains gravity-fed toward the pump.

• Included: pump, mounting bracket, inlet/outlet adapters, check valve
• Electrical: positive/negative wiring markings on the fuel outlet side
• Mounting recommendation: install below tank for gravity feed
• Tip: use a pre-filter and correct hose clamps for leak-free joins

What fuel types and vehicle systems are compatible?

This CarBole pump is intended for EFI (electronic fuel injection) systems and is compatible with gasoline and diesel. It is not recommended for alcohol-rich fuels like E85, which can shorten pump life. The pump’s external inline design is a convenient swap or upgrade for applications that don’t require an in-tank unit.

• Designed for: EFI systems (gasoline & diesel)
• Not recommended for: high-alcohol fuels such as E85
• Connection sizes: 10AN inlet, 6AN outlet for easy hose/adaptor fitment
• Good for: turbocharged and modified engines requiring higher flow

Who is this for? Enthusiasts, tuners and mechanics who need a durable, high-flow external pump for EFI setups will appreciate the CarBole 12V pump. It suits owners upgrading fuel delivery for boosted or higher-output engines, those replacing worn external pumps, and DIY installers who want a complete kit that reduces install time. Professionals should verify compatibility with their vehicle’s fuel pressure requirements and pair the pump with an appropriate regulator, filter and correct electrical wiring to ensure safe, long-lasting operation.