EWP115 Nylon Combo - 24V 115LPM/30GPM Remote Electric Water Pump & Controller (Part #8931)

The EWP115 Nylon 24V is available for purchase in following options:

  • Pump Only (Part #8126) 
  • Kit (Part #8026) 
  • Combo with Controller (Part #8931)

The EWP®115 (24 Volt) and EWP® & Fan Digital Controller Combo – simple, do-it-yourself, easy to install, designed to complement or replace your existing belt-driven, mechanical water pump and engine thermostat. The EWP®115 will fit most vehicle makes and models fitted and excel on large six-cylinder, V8 engines. The EWP® & Fan Digital Controller is scientifically calibrated to manage the flow rate of engine coolant to lock onto a targeted engine temperature.


EWP115 - NYLON 24v Assembly 1
Wiring Harness - EWP & Fan controller 1
EWP/Fan Digital controller 1

Adapter - Nylon - In Line, 35mm (2 x 1/4" NPT)

(*As of Sept 2021 the inline adapter changes to 38mm)

1/4" NPT Nylon - Bung 1
U-Bracket - For #8002 1
Mounting Plate - For #8002 1
BLUE 6mm Ring Terminal - B2-6 1
Sensor Thermal - coolant  temp - ¼" NPT thread 1




Technical Specifications
Technical Specifications - EWP115      Technical Specification - Controller
Operating voltage 10V DC to 27V DC Voltage range 12V DC to 29V DC
Maximum current 5.5A @ 24V Display LCD size

64.6mm (2.54”) x 55.6mm (2.19”)

Flow rate (max) 115 L/min (30.38 US gal/min) @ 24V 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 Nylon 66, 30% glass-filled 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 35mm to 51mm (1.38” to 2”) Overrun/ shutdown -10°C (14°F) below set/target temperature or 3 minutes
Push-On fitting Size  

EWP Inlet & Outlet 38mm

  • with 3mm Sleeve (#8510) 44mm
  • with 6mm Sleeve (#8511) 51mm 
Indicators Temperature, power, EWP, test, fan, high & low temp, voltage, above set temperature (with alarm)
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 nylon 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 Nylon   



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 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 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



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