EWP115 Alloy Combo - 12V 115LPM/30GPM Remote Electric Water Pump & Controller (Part #8950)

The EWP115 Alloy12V is available for purchase in following options:

  • Pump Only (Part #8140) 
  • Kit (Part #8040) 
  • Combo with Controller (Part #8950)

Take total control of your engine cooling with the Davies Craig EWP®115 Alloy Electric Water Pump and LCD EWP®/Fan Digital Controller. The Controller will also manage the operation of your Thermatic® Fan. 

The EWP®115 (115 litres per minute) pump is suitable for small, medium, large, high-performance and 4WD vehicles. It improves engine cooling control and capacity whilst giving you more power and torque and improved fuel economy. Our EWP range are also extensively used in Intercooler Applications.


EWP115 Alloy


EWP/Fan Digital Controller & Mounting Plate + Bracket


Sensor Thermal - coolant temp - ¼" NPT thread


Adaptor - Nylon - In Line, 38mm (2 x 1/4" NPT)

1/4" NPT Nylon - Bung 1

Wiring Harness


Hose Clamps



BLUE 6mm Ring Terminal 1


EWP115 Alloy ELECTRIC WATER PUMP      LCD Controller
Operating voltage 3V DC to 15V DC Voltage range 12V DC to 29V DC
Maximum current 10A @ 13V Display LCD size

64.6mm (2.54”) x 55.6mm (2.19”)

Flow rate (max) 115 L/min (30.38 US gal/min) @ 13V DC Maximum current 12Amps
Operating temp. -40° to 130°C (-40° to 266°F) Warning alarm High & low Temp., Above set temp., Sensor short circuit, Pump error, High & low voltage and Sensor open circuit
Pump design

Clockwise centrifugal with volute chamber

Targeted (set) temperatures Singular degrees from:
40°C (104°F)to 110°C (230°F)
Pump weight 920 grams (2.3 lb) Memory Set & targeted temperature
Pump material Aluminium (Powder Coated) Fan cut-in temp. 3°C (5.4°F) above the targeted (set) temperature
Burst pressure 500 kPa (72.5 psi) Controller type PCB with micro-processor
Seal Ceramic face seal Sensor type
Thermister in housing

Self Priming

No, none of our pumps are self-priming

Fits hose sizes


Internal Fitting 

35mm to 51mm (1.38” to 2”)


-Inlet & Outlet: -16AN ORB

Overrun/ shutdown -10°C (14°F) below set/target temperature or 3 minutes
Indicators Temperature, power, EWP, test, fan, high & low temp, voltage, above set temperature (with alarm)
Push-On fitting Size 

EWP Inlet & Outlet 38mm

  • with 3mm Sleeve (#8510) 44mm
  •   with 6mm Sleeve (#8511) 51mm  
Weight 100 grams (3.5 oz)

Length = 98mm (3.8")
Width = 95mm (3.7")
Depth = 25mm (1”)



Mechanical belt-driven water pumps run directly off the motor and sap engine power … the EWP®115 is hardwired into your electrical system, by-passing the engine and releasing up to an additional 10kw (13hp). Combined with the LCD EWP® / Fan Digital Controller, the pump continues to run after you’ve switched off, eliminating “heat soak” and extending engine life.

Davies, Craig’s revolutionary, Australian-designed EWP® pumps are made from anti-corrosive, lightweight Alloy reinforced with fibreglass. Universal fit allows for easy mounting into the bottom radiator hose. Our kits come with easy-to-understand DIY instructions and everything you need for easy installation, including different adaptors to fit various hose sizes and all necessary electrical wiring.

The EWP®115 and LCD EWP® / Fan Digital Controller Combo Pack is the most economical way to increase horsepower and save on fuel consumption whilst caring for your engine.

The Davies, Craig EWP® header adaptor kit can replace the mechanical water pump completely. (See EWP Header Adaptors on website)

The world’s most advanced total engine cooling management

null universal fit

null more power

null more cooling

null increase fuel efficiency

null extend engine life

null world-leading technology

null lightweight Alloy   



Installing an EWP® as an AUXILIARY PUMP

  • Leaving the mechanical water pump in place, install the EWP® into the bottom radiator hose.
  • Remove the thermostat and drill two approx. 3mm (1/8") holes in the thermostat plate to allow some coolant circulation when the thermostat is closed. Re-install ensuring that the thermostat housing is clean and a new gasket is used if required.

EWP® INSTALLATION – disabling Mechanical water pump

  • Leaving the mechanical water pump in place, install the EWP® into the bottom radiator hose and remove the manufacturer’s thermostat.
  • You will need to bypass the water pump pulley by installing an appropriate length belt (not supplied). This method makes for an easy installation.
  • If running the pump continuously remove the thermostat and drill two approx. 3mm (1/8") holes in the thermostat plate to allow some coolant circulation. Re-install ensuring that the thermostat housing is clean and a new gasket is used if required.

In both these cases, the EWP® will pump past the impeller of the mechanical water pump.

Disengaged mechanical water pump (recommended)

  • Remove the mechanical water pump and remove the thermostat.
  • Then remove the impeller from the mechanical pump shaft. Retain the mechanical water pump using the pump pulley as an idler to avoid re-routing the drive belt.
  • Block any bypass passages and re-install the disengaged water pump ensuring that all gasket surfaces are clean and the new gaskets are properly fitted to prevent leaks.
  • Install the EWPÒ into the bottom radiator hose.

Removed mechanical water pump (Ideal)

  • Remove the mechanical water pump and thermostat from the engine.
  • Install a Davies Craig EWP® Header Adaptor or blanking plate (not supplied). Ensuring the gasket surfaces are clean and the appropriate gasket or sealant is used to prevent leaks.
  • Install the EWP® into the bottom radiator hose. This method will require you to modify or replace the standard radiator hose.
  • Install an appropriate length belt (not supplied) to drive the accessories.

In most cases EWP® will be adequately supported by the radiator hose. Where mounting is required, the EWP® must be soft mounted to protect against vibration. For the EWP115, EWP130 and EWP150 Part #8700 Mounting bracket is recommended.


This LCD EWP® / Fan Digital Controller (Part #8002) is Australian designed and as part of this Australian manufacturing company’s continuous improvement program this advanced Digital Controller boasts a suite of enhancements.


The updated LCD Digital Controller how has two specific functions. This unique Controller will now manage the operation of the EWP® by varying the speed of the EWP® in response to the temperature of the engine and manage control of your electric engine fan. The Controller has a push-button on the facia panel that offers target temperatures Singular degrees from 40°C (104°F)to 110°C (230°F).

Generally, higher engine temperature will offer improved fuel efficiency and lower engine temperature more power. The LCD Digital Controller will now operate the engine’s electric fan automatically once the engine has reached +3c above the target temperature. A significant benefit too is the Controller allows the EWP® to run on after ignition shutdown to reduce heat soak. It is recommended that engine operational temperatures be checked with manufacturer.

null  Black & White Numerical Screen

null Celsius or Fahrenheit display option
null Warning Alarms: 

- Plus 10°C (14°F) set/target temperature
- Under temp 40°C after 5 mins
- Temp sensor error
- Over or under voltage
- EWP error

 null  Select any set temp range from 40°C (104°F)to 110°C (230°F)
null Set / targeted temperature memory
null Override feature to assist bleeding EWP & fail safe
null Input voltage display
null Compatible with billeted style Electric Water Pumps


 For further information, see Product Information

User Reviews

  • Attached to my MGB

    My MGB is still 1800cc, but I was wearing a Fast Road Cam and HS6 carburetor, so I was struggling with overheating in summer when I was riding in the town. One year ago, I was told in a club magazine that I could do a cool run with EWP installed, so I searched Ebay and purchased EWP115KIT. Since the diameter of the cooling hose is φ30mm, it took a little time to connect it. Also, I purchased a rubber mount kit for installation, but because it does not fit in the engine room, I made my own mounting jig and installed it. When you actually start running, you can now cool run at low speed and high speed, and enjoy it without any problems.However, recently, when running in winter, the heater does not work so much, I have currently ordered WBP. I'm going to install it soon and hope to enjoy the drive with the heater working. I'm really happy with the EWP because I can monitor the engine temperature and power generation voltage accurately without worrying about engine blow due to overheating.

    1 year ago

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