AEM 400 LPH High Pressure Inline Fuel Pump - M18 to M12

AEM 400 LPH high-flow, high-pressure inline fuel pump in the popular 044-style configuration with M18x1.5 female inlet and M12x1.5 male outlet. Each pump is tested to flow 400+ LPH (100 GPH) at 40 PSI and holds 340 LPH at 73 PSI (30 psi boost). Compatible with flex fuel (E85/E90) and all gasoline; installs externally or in-tank.

Specifications

Documents: Installation Instructions (PDF)

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy