12AN CWA400


12AN CWA400

If you are looking for a powerful aftermarket pump this is it, on car flow rate data (the only data that counts – advertised flow rates are from one empty fish tank into another and do not account for intercooler flow restrictions, so a pump that can flow under high pressure is essential) And the CWA400 is exactly that pump! High flow/High Pressure

The Pierburg CWA400 shows extremely good flow data for pressure, which is exactly what we are chasing, most pumps simply cannot push through the flow restrictions of intercoolers, heat exchangers and our intercooler. With the CWA400 we are seeing on car flow rates around 35L per min (9.24gal per min)

We have our CWA400 pumps programmed to run at their max speed, without the need of a PWM controller.
Pump is also reprogrammed to keep running at temps below 0c (32F) normally this model pump would turn off!
Simply hardwire the pump, as per the below wiring diagram and it will run, no need for expensive controllers. Just wire it up!

FII does not offer warranties on any electronics!

Electrical wiring:
Pick up power from the fuel pump fuse (or similar power supply that only has power when the engine is running), have that power trigger a relay. Relay then has its own power supply.
Have the relay power output go to both positive wires on the pump (twist wires 1 and 3 together).
Ground both negative wires (twist 2 and 4 together) to a good non painted body surface or negative terminal and you are done.

 Pump includes pre crimped electrical harness  

  • Operation voltage: 8-16 volts
  • Weight: approx. 2.15 kg
  • Current consumption: 35.5A (36.3A max when pump is highly flow restricted, most cars will run 15-20amp.)/ (approx. 0.2mA in standby mode)
  • Speed: approx. 5900 rpm
  • Temperature range: -40°C – 128°C (water) / -40°C – 140°C (ambient)
  • Protection: IP67
We make own our custom flow contoured fittings avoiding any loss of flow during the transition inside the pump

Frequently Asked Questions

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Additional information


Standard 1" barbs, Convert inlet/outlet to -16AN (+$185)