SKU: 54242003156

AEM High Flow 400LPH Metric Inline Fuel Pump - 044 Style

Sale price$101.22 Regular price$112.47
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Description

AEM High Flow 400LPH Metric Inline Fuel Pump - 044 StyleAEMs 400lph Metric High Flow, high pressure Inline Fuel Pump (PN 50 1009) is the perfect direct replacement upgrade for 044 pump users who want more fuel flow for their high performance vehicle! The 400lph Metric High Flow Inline Fuel Pump has an M18X1. 5 female inlet and M12x1. 5 male outlet. It utilizes the industry standard 044 Style envelope. It is capable of supporting over 1,200 HP normally aspirated and a whopping 860 HP at 30 psi boost!* It

AEM’s 400lph Metric High Flow, high pressure Inline Fuel Pump (PN 50-1009) is the perfect direct replacement upgrade for 044 pump users who want more fuel flow for their high performance vehicle!

The 400lph Metric High-Flow Inline Fuel Pump has an M18X1.5 female inlet and M12x1.5 male outlet. It utilizes the industry standard “044 Style” envelope. It is capable of supporting over 1,200 HP normally aspirated and a whopping 860 HP at 30 psi boost!* It flows 400lph (105 gph) at 40 PSI, 340 lph (90 gph) at 73 PSI, and 270 lph (71 gph) at 120 PSI. Complete flow curves from 35 to 120 PSI and current draw vs. fuel pressure charts are available on the Specs tab.

The AEM 400lph Metric High Flow Fuel Pump is rated for use with ethanol-blended fuels, (E85/E90) and all types of gasoline, but pump life will be diminished if used with 100% ethanol fuels.

Features

  • Designed for high output naturally aspirated and forced induction EFI vehicles
  • Popular “044 Style” physical configuration with metric fittings for direct replacement of 044 pumps!
  • Maintains very high flow even at boosted fuel pressures; 340 lph @ 73 PSI (30 psi boost)
  • Each pump individually tested to flow minimum of 400lph (105gph) @ 40 PSI
  • Compatible with Flex Fuel (E85/E90) and all types of gasoline (100% Alcohol fuels may diminish fuel pump life)
  • Kit includes fuel pump, check valve fitting, terminal nuts & boots, instructions

Technical Specs

  • Weight: 35.8oz (1015 grams)
  • Outside Diameter: 60mm
  • OD External Materials: Black plated steel with laser etching
  • Inlet Fitting: M18X1.5 female
  • Outlet Fitting: M12x1.5 male
  • PRV Activation: 150 PSI
  • Impeller Design: Roller vane with ceramic end plate

    VOLTAGE SPECS
  • Connector Terminal: 6mm stud positive, 5mm stud negative
  • Min Voltage Input: 10 volts
  • Max Voltage Input: 18 volts
  • Current Draw (40 psi): 9.73 amps no check valve, 10.68 amps with check valve (13.5v)
  • Current Draw (120 psi): 16.07 amps no check valve, 17.13 amps with check valve (13.5v)
  • Fuse: 25 amps (13.5v)

 *Power rating given using gasoline and assuming a base fuel pressure of 43 PSI, 13.5v at the pump, 6.2 lbs/gal with a BSFC of 0.65. Boost fuel pressure is assumed to be the base pressure of 43 PSI + boost pressure. Flow capability for horsepower support is ultimately dependent on fuel hose diameter, and system electrical voltage and amperage capabilities.

Note:
Your vehicle’s factory fuel pump wiring may not be adequate enough to handle the current draw of AEM’s High Flow Fuel Pump. Please refer to the Electrical Requirements section in the instructions document for proper wiring. You can download a copy of the instructions below.

Although AEM’s High Flow Fuel Pumps are the same physical size as many OEM fuel pumps, they may not be appropriate for a specific application. You can consult the Vehicle Search function on our website to see whether a pump is recommended for your vehicle. The Vehicle Search function should be used as a reference only. It is imperative that you check the fuel pump sizing for your vehicle before purchasing an AEM High Flow Fuel Pump.

AEM does not condone or approve of the modification of a tank to accommodate a High Flow Fuel Pump and cannot guarantee the pump’s performance or operation if any modifications are made.performance or operation if any modifications are made.

AEM Instruction Manual & Tech Sheet

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 54242003156

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Yunely Machado
Whiting, US
★★★★★ 5
"Quality and style in a single backpack"
Color: Apricot, Size: 16 Inch
"The backpack has an elegant and minimalist design, with a smooth and good quality finish. It is spacious, has several practical pockets and looks resistant for daily use. The neutral color makes it easy to combine and perfect for both work and travel. Very functional and with excellent presentation.”
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Reviewed in the United States on December 9, 2025
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Khaila Williams
Battle Creek, US
★★★★★ 5
Quality for your money.
Color: Apricot, Size: 16 Inch
I am beyond pleased. Everything works well. I was just think yesterday after looking at it that i will have this bag long because it strong like keep for years strong, no joke. It is worth it. Easy to use, the space is enough for a University Student like me, and it adjsut well but I'm guessing it's manufacturing problem as one starp is longer than the other and feels funny at time but I work around it and adjust to my comfort.
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Reviewed in the United States on March 24, 2026
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Katherin
Waukegan, US
★★★★★ 5
Perfect backpack for work and daily use
Color: Apricot, Size: 16 Inch
The backpack has a clean, professional look and the material feels sturdy and smooth. The size is perfect for a 16-inch laptop, with good padding and comfortable straps. I use it daily for work, and everything fits well inside, including my laptop, charger, and a few essentials. It stays organized without feeling bulky and is very comfortable to carry
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Reviewed in the United States on January 11, 2026
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jackie
New York, US
★★★★★ 5
Perfect. A must have!
Size: XX-Large, Color: Nude
Perfect fit! After 2 battles with breast cancer and breast reconstruction I find it very difficult to find strapless or any bra for that matter that fit and are comfortable … this bra not only fits it stays put! I have purchased some pricey ones in the past but this gives a lot of bang for your buck. I also love the fact it stays in place- has rubber like adhesive that sticks to your skin and has no wires. I feel mangled after basically being amputated by a double mastectomy- I worry about the bra falling down exposing the fact I have no “nips” because cancer took all that away from me. Additionally, I like that it comes with removable straps for adjustability for extra support if needed. The quality seems to be good but I have yet to wash, just like any bra - gentle cycle wash and a flat air dry will extend the life of the bra.
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Reviewed in the United States on May 22, 2026
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Alana G
Alexandria, US
★★★★★ 5
Doesn't slip down
Size: XX-Large, Color: Black
Holds up very well for day to day work and doesn't slip down. Came with straps as well. Material feels great. I would base sizing off of your usual band size more than cup. Got a XXL when measured I'm usually a 38B or 36C and those sizes are too small to be comfortable and it said I'd match with a large so I went up based upon my bra experiences. Pink color isn't really a good pink tone more closer to nude and dull if anything. But all the other styles and colors are great. It feels very supportive and covers all the right places while smoothing out back rolls. It's a good stretch when you put it on to and then conforms to the chest. Pads are a little over the place but they're removable so that's expected.
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Reviewed in the United States on May 14, 2026

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