SKU: 26974834556

AEM Electronics EM 400lph Inline High Flow Fuel Pump 400lph40psi, 300LPH120psi M18x1.5 Inlet and M12x1.5 Outlet (50-1009)

Sale price$179.95 Regular price$199.95
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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13

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Description

AEM Electronics EM 400lph Inline High Flow Fuel Pump 400lph40psi, 300LPH120psi M18x1.5 Inlet and M12x1.5 Outlet (50-1009)AEMs 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.

  • 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

*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.

  • 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.

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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 26974834556

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A.D. SPARKS
Grantham, US
★★★★★ 5
PERFECT FIX
Size: 32 mm, Color: Red
Perfect fit for DIY oil filter change on 2021 BMW X-7. Good quality, well made, should outlast the vehicle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
D
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Douglas Clark
Cuba, US
★★★★★ 5
I like the red. It does the intended job perhaps like others do.
Size: 32 mm, Color: Red
It's a socket. It does the job without any fail to report. I like that it's red so that I find it easily in my tool chest the next time I need it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
F
Verified Purchase
FH
Boise, US
★★★★★ 5
Fits many makes
Size: 27 mm, Color: Green
Makes it easier to change oil. Fair price fast delivery.
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Reviewed in the United States on February 24, 2026
D
Verified Purchase
Doug Caspersen
Pawtucket, US
★★★★★ 4
3/8" Drive 36mm Oil Filter Socket
Size: 36 mm, Color: Red
Works, but seems slightly loose on the fit.
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Reviewed in the United States on February 14, 2026
C
Verified Purchase
Countleo
Whiting, US
★★★★★ 5
great specialty socket
Size: 36 mm, Color: Red
well made, nice to have for my Ford 6.0L
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026

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