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AEM 400 LPH fuel pump
AEM ethanol compatible fuel pump
400 LPH high flow fuel pump
E85 compatible in-tank fuel pump
AEM fuel pump kit 50-1230
high horsepower EFI fuel pump
Datasheet
AEM 39mm fuel pump
AEM 400 LPH in-tank fuel pump
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AEM 400 LPH High Flow In-Tank Fuel Pump Kit - Double Barb - Ethanol Compatible

AEM
AEM50-1230
090127819821
Fuel Pumps
9 Units In Stock - Ships Next Business Day
$ 194.95 $ 172.95
$ 172.95

SKU: 50-1230 / UPC: 090127819821


AEM 400 LPH High Flow In-Tank Fuel Pump Kit - Double Barb - Ethanol Compatible

The AEM 400 LPH High Flow In-Tank Fuel Pump is a premium performance fuel pump engineered for high-horsepower naturally aspirated and forced induction EFI vehicles. This pump delivers an impressive 400+ liters per hour (106+ GPH) at 40 PSI while drawing only 12 amps, making it one of the highest-flowing 39mm body pumps on the market.

It maintains excellent flow even under boosted conditions, pushing 330+ LPH at 70 PSI (13.5V) enough to support approximately 870+ horsepower on gasoline. Fully compatible with ethanol (up to E100) and methanol (up to M100), this pump is the ideal choice for high-performance street, track, and race applications. The double barb outlet is designed for 3/8" ID hose, and the kit includes everything needed for a clean installation.

Key Features

  • 400+ LPH Flow Rate – Supports 1000+ horsepower on gasoline at 40 PSI
  • High Boost Capability – Maintains 330+ LPH at 70 PSI (supports ~870 HP)
  • Ethanol & Methanol Compatible – Safe for E100 and M100 fuels
  • Low Amperage Draw – Only 12A at 40 PSI and 15A at 70 PSI
  • Compact 39mm Body – Direct replacement for many OEM fuel pumps (same size as Walbro 255)
  • Double Barb Outlet – Ideal for 3/8" ID fuel hose
  • Complete Installation Kit – Includes wiring harness, pre-filter, end cap, and rubber buffer sleeve

Specifications

Detail Value
Part Number 50-1230
Brand AEM
Type 400 LPH High Flow In-Tank Fuel Pump Kit
Flow Rate 400+ LPH @ 40 PSI (13.5V)
Flow at Boost 330+ LPH @ 70 PSI (13.5V)
Body Diameter 39mm
Inlet Size 11mm
Outlet Type Double Barb (3/8" ID Hose Compatible)
Fuel Compatibility Gasoline, E85, E100, M100
Amperage Draw 12A @ 40 PSI / 15A @ 70 PSI
Country of Origin United States
Warranty AEM Limited Warranty

Whats Included

  • AEM 400 LPH Fuel Pump
  • Wiring Harness
  • Pre-Filter
  • End Cap
  • Rubber Buffer Sleeve
  • Installation instructions

Product Notes

  • Supports 1000+ HP on gasoline at 40 PSI
  • Ideal for high-performance street, track, and forced induction applications
  • Professional installation recommended

Installation Notes

  • Direct replacement for many OEM in-tank fuel pumps
  • Estimated time: 1–3 hours (depending on vehicle)
  • Professional installation strongly recommended

This Part Fits

Application Notes
High-Performance Vehicles Compatible with most EFI vehicles using a 39mm in-tank fuel pump
Forced Induction & Modified Engines Excellent for turbocharged and supercharged applications

Why Choose AEM High Flow Fuel Pumps?

  • Industry-leading flow rates and reliability
  • Ethanol and methanol compatible for modern performance builds
  • Low amperage draw reduces electrical load on the vehicle
  • Proven performance in high-horsepower applications

Frequently Asked Questions

  • Q: Will this pump support 1000 HP?
    A: Yes, at 40 PSI it flows enough to support 1000+ horsepower on gasoline.
  • Q: Is this pump ethanol compatible?
    A: Yes, it is fully compatible with ethanol blends up to E100.
  • Q: What size hose does the outlet fit?
    A: The double barb outlet is designed for 3/8" ID fuel hose.
  • Q: Is professional installation required?
    A: Professional installation is strongly recommended for safety and proper fuel system function.

Shipping & Handling

  • Method: Ground UPS or FedEx
  • Availability: In stock – ships same or next business day
  • Packaging: Secure AEM retail packaging

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