Davies Craig
Davies Craig EWP150 Alloy Electric Water Pump & Digital Controller Combo 12V (8970)
Davies Craig EWP150 Alloy Electric Water Pump & Digital Controller Combo 12V (8970)
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EWP®150 Combo Remote Electric Water Pump & Controller
12 Volt | Part Number: #8970
The EWP® Combo Configuration is the ideal solution for a full electric water pump conversion. This setup allows you to remove or disengage the mechanical belt-driven water pump and, in most applications, eliminate the factory mechanical thermostat — delivering precise, fully controlled cooling system performance.
By converting to an EWP® Combo system, you gain optimal temperature management, improved efficiency, and complete control over your engine’s cooling strategy.
Delivering a massive open flow rate of 162 litres per minute (42.8 g/min)
Upgrade your cooling system with the EWP®150 Alloy Electric Water Pump (12V) — a high-flow, remote-mount solution engineered for performance vehicles that demand superior temperature control.
Designed for high horsepower, turbocharged, supercharged and modified engines, the EWP®150 efficiently manages excessive heat while also supporting intercooler applications. By reducing the load on your engine compared to a traditional mechanical pump, it helps free up power and improve overall efficiency.
Available Options
- Pump Only – Part #8160
- Kit – Part #8060
- Combo with Digital Controller – Part #8970
Key Features
- High-flow performance for improved cooling capacity
- Remote mount design for flexible installation in the engine bay
- Durable alloy construction for strength and heat resistance
- -AN16 ORB internal inlet & outlet fittings for clean, secure connections
- Compact and lightweight design
- Suitable for intercooler and auxiliary cooling applications
Performance Benefits
- Enhances coolant flow and heat dissipation
- Improves engine temperature control under load
- Reduces parasitic loss from mechanical pumps
- Can complement or fully replace the factory water pump
- Helps increase power delivered to the drive wheels
Built for demanding conditions, the EWP®150 is an essential upgrade for anyone looking to maximise cooling efficiency and engine performance.
| COMBO CONTENTS | |
| PART DESCRPTION | UNITS |
| EWP®150 Alloy | 1 |
| EWP®/Fan Digital Controller & Mounting Plate + Bracket | 1 |
| Sensor Thermal - coolant temp - ¼" NPT thread | 1 |
| Adaptor - Nylon - In Line, 38mm (2 x 1/4" NPT) | 1 |
| 1/4" NPT Nylon - Bung | 1 |
| Wiring Harness (with 10amp Fuse) | 1 |
| Hose Clamps | 4 |
| SCREW - SELF TAP 8X3/8 BZ | 1 |
| BLUE 6mm Ring Terminal | 1 |
| TECHNICAL SPECIFICATIONS | ||||
| EWP150 - 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) | 162L/min (42.8 US gal/min) @ 13V DC | Maximum current | 12Amps | |
| Operating temp. | -40° to 120°C (-40° to 248°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 | 1,170 grams (2.6 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 size | 35mm to 51mm (1.38” to 2”) | 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) | |||
| Internal Fitting | -Inlet & Outlet: -16AN ORB | Weight | 100 grams (3.5 oz) | |
| Push-On fitting Size | EWP Inlet & Outlet 38mm
| Dimensions | Length = 98mm (3.8") | |
EWP® Installation Options
Electric Water Pumps (EWP®) offer flexible installation methods to suit a wide range of vehicles and performance goals. Whether used to enhance an existing cooling system or fully replace a mechanical pump, an EWP® delivers improved cooling efficiency, reduced engine load, and potential fuel savings.
Auxiliary or Replacement Installation
An EWP® can be installed in two primary ways:
Auxiliary Pump (Recommended for simple upgrades)
Installed alongside the factory belt-driven pump, the EWP® significantly boosts coolant flow and heat dissipation.
- A short section (approx. 100mm / 4") is removed from the lower radiator hose
- The EWP® is inserted inline and secured
- Wired via a thermal switch or digital controller
- Can operate in conjunction with electric radiator fans
Performance benefit:
At idle, a mechanical pump typically circulates ~15 L/min. An EWP®150 can add up to 162 L/min, dramatically improving cooling and reducing heat soak.
Upgrading to a digital controller allows the pump and fans to continue running briefly after engine shutdown, helping prevent heat damage to critical components such as the head gasket.
Disabling the Mechanical Water Pump
This method retains the original pump housing but removes its function:
- Install the EWP® in the lower radiator hose
- Remove the factory thermostat
- Fit a shorter drive belt to bypass the pump pulley
Optional (continuous operation):
- Modify the thermostat by drilling two 3mm holes to allow constant coolant circulation
- Reinstall with a clean housing and new gasket if required
This approach offers a straightforward installation with minimal modification.
Disengaged Mechanical Water Pump (Recommended Setup)
For improved efficiency while maintaining belt routing:
- Remove the thermostat and mechanical pump impeller
- Reinstall the pump housing to act as an idler pulley
- Block any bypass passages
- Install the EWP® in the lower radiator hose
This method reduces parasitic loss while avoiding major belt system changes.
Full Removal of Mechanical Water Pump (Ideal Setup)
For maximum performance and efficiency:
- Remove the mechanical water pump and thermostat entirely
- Install a block adapter or blanking plate (not supplied)
- Modify or replace the radiator hose to suit EWP® installation
- Fit an appropriate belt to drive remaining accessories
This setup eliminates mechanical drag and delivers the greatest efficiency gains.
Mounting & Installation Notes
- In most installations, the EWP® is supported by the radiator hose
- Where additional mounting is required, soft mounting is essential to minimise vibration
- Recommended mounting kits:
- Part #8700
- Part #8710
(Suitable for EWP®115, EWP®140, and EWP®150 models)
Key Benefits of EWP® Systems
- Increased coolant flow and cooling performance
- Reduced engine load → improved power delivery
- Lower fuel consumption
- Improved engine protection during hot shutdown
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