Davies Craig EWP KITS & COMBOS

Davies Craig EWP KITS & COMBOS



The Mechanical Water Pump is one of the last mechanical components of the modern engine which has long been considered an inefficient component that was designed as an accessory from the ever first engines. A mechanical belt driven pump installed on your car engines runs at the same speed as the engine regardless of how hot the engine is. Example: when travelling at high speeds down the freeway, the engine require less cooling as ram air is naturally cooling the engine however, the engine speed is high as is the mechanical water pump thus providing excessive cooling whilst draining the engine of power. Then in heavy traffic in high ambient, the engine is idling or slow and so is the belt driven mechanical pump, even though in this condition, extra coolant flow is required to cool the engine.

With an LCD EWP Controller (PATENTS: USA 6425353, EU 1133624, AUS 756453), the speed of the pump is managed by the controller, which varies the supply voltage to the pump and so varies the speed of the pump, hunting for a target temperature. When the engine reaches the target temperature the controller locks on, constantly changing the pump speed with traffic and throttle conditions, maintaining the target temperature independent of the engine speed.

The important improvement for your vehicle comes from the fact that most of the power the mechanical pump takes from the engine can be reclaimed with the use of an EWP hence the fuel savings. By removing the parasitic power losses of belt-driven water pumps, the EWP may provide up to 10kw of extra power and additional fuel savings. The engine power used by the mechanical pump increases as the cube of its speed – so when the mechanical pump speed doubles from idle speed say; 600rpm to 1200 rpm, the power it takes increases by eight times. Then another eight times going to 2400 rpm, and so on up to maximum engine speed. It is this extra power and torque that is released by deleting the mechanical pump that provides the fuel savings that is estimated to be 3.5% to 10%.

Major European Manufacturers have implemented EWP’s as standard issue on a number of their vehicles, we have documents show that and EWP uses 90% less energy than conventional systems, i.e.: the mechanical water pump. Other advantages will include lower emissions by virtue of faster engine warm up, better engine temperature management, eliminating engine heat soak and improved engine life.

Weight reduction is a key requirement of any automotive manufacturer seeking fuel savings and our EWP will weight around 900 grams up to 1,151 grams (dependent on EWP Type) compared to a typical mechanical pump at 3 to 4 kg. Not only is our EWP considerably lighter when matched against the mechanical pump but we would also be replacing several outdated components with one environmentally friendly product which once again helps improve performance and fuel consumption.


Davies, Craig’s range of patented Electric Water Pumps (EWP) and Electric Booster Pumps (EBP) are available in flow rates from 15 L/min (4 gal/min) up to 150 L/min (39.63 gal/min) at 12v & 24volt and in Nylon66 / Alloy housings. Our EWP’s are designed for universal fitment to compliment or replace a vehicle’s existing mechanical belt-driven water pump with simple, DIY installation.

  • Davies, Craig recommends using Glycol 50% in water for all EWP & EBP.
  • Recommended viscosity range for all EWP & EBP: 100 mPa·s @ -30°C to 1 mPa·s @ 100°C


EBP15  EBP23  EBP25  EBP40 EWP80  EWP115  EWP130 EWP150
Flow Rate (Max) L/Min 15 23 25 37 80 115 130 150
Gal/Min 4 6.1 6.6 9.8 21.1 30.4 34.3 39.6
Pump Material Nylon 66 Yes Yes Yes Yes Yes Yes No No
Alloy No No No No No Yes Yes Yes
Voltage 12 Volt Yes  Yes Yes Yes Yes Yes Yes Yes
24 Volt No No No Yes No Yes Yes Yes
Operating Temp C -40 to 120 -40 to 120 -40 to 120 -40 to 120 -20 to 130 -40 to 130 -40 to 130 -40 to 130
F -4 to 248 -4 to 248 -4 to 248 -4 to 248 -4 to 248 -4 to 248 -4 to 248 -4 to 248
Weight Grams 245 364 995 570 900 923 1,107 1,170
Pounds 0.54 0.8 2.19 1.25 2.0 2.16 2.6 2.6
Fits Hose Size 12.5 to 19mm 12.5 to 19mm 19mm 19mm 32 to 51mm 38 to 51mm 32 to 51mm 38 to 51mm
Engine Size (Litres) Motorbikes, Heater Systems & Solar up to 2 2 – 3.5 3.5 – 5 5+



Product Selection Guide

Electric Water Pumps & Controllers

Application Pump Model Pump Kit Pump Combo Controller / Switch
Part #
12 V
Part #
24 V
12 V
Part #
24 V
Part #
12 V
Part #
24 V
 Motorbike up to 500cc (Standard) EBP®15 9001 0444 or 0455
 Motorbike 500cc – 1000cc (Std) EBP®23 9050 0444 or 0455
 Motorbike 1000cc – 2000cc (Std) EBP®25 9005 0444 or 0455
 Vehicle Heater System (Standard) EBP®23 9050 0444 or 0455
 LPG (Butane) System (Standard) EBP®23 9050 0444 or 0455
Intercooler (depending on capacity)  EBP®23 9050
 EBP®25 9005
 EBP®40 9040 9041 0444 or 0455 0444 or 0455
 EWP®80 8005 8907
 Engines up to 2.0L (Standard) EWP®80 8005 8907 8001 8001
 Engines up to 2.0L – 3.5L (Standard) EWP®115 8025 or
8026 or
8930 or
8931 or
8001 8001
 Engines up to 3.5L – 5.0L (Standard) EWP®130 8080 8081 8990 8991 8001 8001
 Engines 5.0L or greater (Standard) EWP®150 8060 8061 8970 8971 8001 8001
 Modified Engines
EWP®150 8060 8061 8970 8971 8001 8001
 Drag Racing, Drifting & Speedway EWP®150 8060 8061 8970 8971 8001 8001
 Off Road / 4WDs EWP®130 8080 8081 8990 8991 8001 8001
Solar Hot Water Systems (depending on size)  EBP®15 9001 0444 or 0455
 EBP®23 9050 0444 or 0455
 EBP®25 9005 0444 or 0455
 EBP®40 9040 9041 0444 or 0455 0444 or 0455

EBP Flow Rate (8June2016).png  EWP Flow Rate (8June2016).png


1. EWP used in conjunction with LCD EWP® Controller (PATENTS: USA 6425353, EU 1133624, AUS 756453)
The Digital Controller has a micro-processer which will run the EWP® at exactly the right flow rate maintaining the engine temperature you ‘set’.

2. EWP used in conjunction with Thermal Switch
Combine the EWP® with an adjustable Thermal Switch to add a cooling boost to an overheating mechanical pump cooling system.

3. EWP Continuous Running
Wire the pump to the ignition for maximum cooling – suitable for race vehicles, very hot climates and chronically overheating engines.

EWP Kits come with everything you need for DIY installation including easy to understand instructions.
Digital Controller and Thermal switches are sold separately.



EWP® Header-Adaptor Kits are simply designed to complement the fitment of your EWP® Combo Kit.

If you’ve purchased an EWP® Combo Kit, then you will have an LCD EWP®/Fan Digital Controller with a built-in switch that will thermatically control the new electric Thermatic® Fan in unison with your new EWP®. Simple, easy-to-follow installation instructions are supplied to ensure the Davies, Craig EWP® Electric Water Pump Combo and Header EWP® Header-Adaptor Kits are simply designed to complement the fitment of your EWP® Combo Kit.
EWP® Header Adaptor Kits Adaptor Kit are assembled, mounted and perform in accordance with the product’s design.


Additional information

Weight N/A
Dimensions N/A
Water Pump Size

EWP80, EWP115, EWP130, EWP150, EBP15, EBP15 KIT, EBP23 KIT, EBP25, EBP40


LCD Controller, No Controller

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