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The AEM 400LPH Metric Inline High Flow Fuel Pump is built for high-powered EFI applications, featuring an “044 Style” body with M18X1.5 female inlet and M12x1.5 male outlet fittings. Suitable for external or in-tank installation, it delivers reliable performance even under high fuel pressure, making it ideal for both naturally aspirated and boosted setups. Supporting over 1,200 HP N/A and 860 HP at 30 PSI boost*, this pump is a robust solution for motorsport and performance builds.
Key Features
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Industry-standard “044 Style” envelope with metric ports (M18x1.5 inlet, M12x1.5 outlet)
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Supports over 1,200 HP N/A and 860 HP @ 30 PSI boost*
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Flow rates:
• 400LPH @ 40 PSI
• 340LPH @ 73 PSI
• 270LPH @ 120 PSI -
Compatible with ethanol-blended fuels (E85/E90) and all types of petrol
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Can be mounted externally or in-tank
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Each unit individually flow-tested for quality assurance
Important Notes
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Not recommended for 100% alcohol fuels (e.g., E100) due to reduced pump life
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Requires suitable fittings for integration into your fuel system (sold separately)
No instructions available for this product.

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