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The AEM 400LPH High Flow In-Tank Fuel Pump (Single Barb) is built to meet the demands of high-performance EFI setups, supporting both naturally aspirated and forced induction engines. With robust flow rates, ethanol compatibility, and a compact 39mm body, this pump is ideal for enthusiasts aiming to support 1000+ HP* on gasoline or alternative fuels like E85 and methanol. The smooth single barb outlet is designed for use with 5/16” ID hose, making installation easier in many OE-style configurations.
Key Features
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Flows 400+ LPH at 40 PSI (13.5V); supports 1000+ HP on petrol*
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Delivers 330+ LPH at 70 PSI (13.5V); supports ~870 HP on petrol*
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Smooth 9mm outlet barb compatible with 5/16” ID hose
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Compact 39mm body for drop-in replacement in many vehicles
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Fully compatible with E85, ethanol (up to E100), and methanol (up to M100)
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Low current draw: 12A @ 40 PSI, 15A @ 70 PSI
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Individually flow-tested for quality assurance
Important Notes
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May require upgraded wiring due to increased current draw – refer to installation instructions
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Does not include an integrated check valve
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For 3/8” hose compatibility, see SKU 50-1230 (double barb version)
Included
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AEM 400LPH Fuel Pump (Single Barb)
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Wiring harness
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Pre-filter
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End cap
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Rubber buffer sleeve
No instructions available for this product.

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