PRODUCT DETAILS
The AEM 50 1009 (SKU: AEM-50-1009) is a AEM universal inline fuel pump for high output EFI setups that need real flow at real pressure. In an EFI system, the pump sets the ceiling for how much fuel volume and pressure your injectors can actually get, especially when you lean on the car in a long pull.
Here’s the problem with a lot of factory in tank modules and older external pumps, flow drops hard as rail pressure climbs. That gets worse on boost, because your regulator raises rail pressure 1 to 1 with boost. The 50 1009 uses the familiar AEM 044 style fuel pump physical size, so it often drops into existing 044 style brackets and plumbing, but it does it with metric threaded ports. If you want an AEM direct replacement pump for an 044 layout and you prefer published data instead of vague promises, this is the point of this part.
On paper this is an AEM 400 LPH fuel pump, and AEM publishes flow at higher pressures so you can actually size the system instead of guessing. It also draws more current than most stock wiring wants to deal with, so plan on a proper relay and power wiring. Treat that as required, not optional, unless you enjoy voltage drop and a lean top end.
- Application Universal, this is a 400 LPH inline fuel pump and also an AEM high flow fuel pump option for builds that need external inline packaging
- Rated flow points 400 LPH at 40 PSI, 340 LPH at 73 PSI, 270 LPH at 120 PSI
- Published power support ratings over 1,200 HP naturally aspirated and 860 HP at 30 PSI boost, as stated by AEM, think of this as an AEM 1200 HP fuel pump rating, not a guarantee for your exact combo
- Port threads AEM metric fuel pump ports, M18x1.5 female inlet, M12x1.5 male outlet, plan adapters if your system is AN
- Outside diameter 60 mm, standard 044 style inline mounting footprint
- Weight 35.8 oz and 1015 g
- Pump body material steel with black plating
- PRV activation 150 PSI
- Impeller design roller vane with ceramic end plate
- Electrical terminals 6 mm stud positive, 5 mm stud negative
- Voltage range 10 V minimum, 18 V maximum
- Current draw at 13.5 V 9.73 A at 40 PSI without check valve, 10.68 A at 40 PSI with check valve, 16.07 A at 120 PSI without check valve, 17.13 A at 120 PSI with check valve
- Recommended fuse 25 A
- Fuel compatibility gasoline and ethanol blended fuels including E85 and E90, so it works as an inline fuel pump for E85 and inline fuel pump for ethanol, AEM notes pump life may be diminished with 100 percent alcohol fuels
- Mounting context can be installed externally or in tank depending on your hardware and plan, most people run it as an AEM high pressure fuel pump in an external inline layout
You usually pick this high flow metric fuel pump when you need an external inline pump in the 044 style envelope, you want published flow numbers at elevated pressure, and you are building the rest of the system to match. That means wiring that holds voltage under load, filtration that will not choke the pump, and line sizing that makes sense for your target power. It also fits well as a fuel pump for high-performance street cars that see boost, because an inline fuel pump for boosted engines lives or dies on pressure plus flow, not just one or the other.
Install is system dependent because this is universal. Confirm the metric ports or order the right adapters, mount it like any other AEM 044 style fuel pump with a solid clamp and isolation, and wire it like it is going to pull real current, because it will. It can work as an inline pump for naturally aspirated builds too, but it really makes sense when your setup needs the headroom. We run these exact kinds of external inline pumps on our own cars when an in tank solution is not the best fit, and the big rule stays the same, build the whole fuel system around the pump, not just the pump itself.