EWP140 Black Combo - Remote Electric Water Pump & Controller (12V)

EWP® 150 Alloy Combo – Remote Electric Water Pump & Controller (24V) Part DC8971

Upgrade your cooling system with the EWP150 Alloy Electric Water Pump (24V) — a high-flow, remote-mount solution engineered for performance vehicles that demand superior temperature control.

Delivering a massive open flow rate of 162 litres per minute (42.8 g/min), it is designed for high horsepower, turbocharged, supercharged and modified engines. The EWP150 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.

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.

Purchase options

• Option: Pump Only; Part DC: DC8161; Notes: EWP® 150 Alloy 24V pump only.
• Option: Kit; Part DC: DC8061; Notes: Pump kit option with essential wiring and fitting hardware.
• Option: Combo with Controller; Part DC: DC8971; Notes: EWP® 150 Alloy 24V + LCD EWP® /Fan Controller + install components.

Combo contents (Part DC8971)

• EWP® 150 Alloy (24V): 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: 1
• Hose Clamps: 4
• SCREW - SELF TAP 8X3/8 BZ: 1
• BLUE 6mm Ring Terminal: 1

Technical specifications

EWP® 150 ALLOY PUMP (24V)

• Operating voltage: 20V DC to 27V DC
• Maximum current: 5.5A @ 24V
• Flow rate (max): 162 L/min (42.8 gal/m) @ 24V DC
• Operating temp.: -40° to 120°C (-40° to 248°F)
• Pump design: Clockwise centrifugal with volute chamber
• Pump weight: 1,170 grams (2.6 lb)
• Pump material: Aluminium (Powder Coated)
• Burst pressure: 500 kPa (72.5 psi)
• Internal Fitting: -16AN ORB
• Fits hose sizes: 35mm to 51mm (1.38” to 2”)
• Push-on size: 38mm; with 3mm Sleeve (DC8510) 44mm; with 6mm Sleeve (DC8511) 51mm

LCD DIGITAL CONTROLLER

• Voltage range: 12V DC to 29V DC
• Display LCD size: 64.6mm x 55.6mm
• Maximum current: 12 Amps
• Targeted temps: 40°C to 110°C
• Fan cut-in temp.: +3°C above set
• Shutdown overrun: 3 mins or -10°C
• Sensor type: Thermister in housing
• Weight: 100 grams (3.5 oz)
• Dimensions (LxWxD): 98 x 95 x 25 mm
• Memory: Set & targeted temp
• Indicators: Temp, Power, EWP, Fan, Error

EWP® & Fan Digital Controller

The updated LCD Digital Controller manages the operation of the EWP by varying the speed of the pump in response to engine temperature and manages your electric engine fan.

Features:

• Black & White Numerical Screen
• Celsius or Fahrenheit display option
• Set / targeted temperature memory
• Override feature to assist bleeding EWP®

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

EWP® & Controller Installation Demonstration

Combined with an LCD EWP/Fan Digital Controller (Included in this Combo Pack) will manage both the EWP and Thermatic fan operation. The Digital Controller will vary the speed of the EWP in response to the engine’s coolant temperature. Multiple temperature settings are provided on the Controller for either maximum power or fuel efficiency.

Key benefits

The world’s most advanced total engine cooling management system:

• universal fit
• more power
• more cooling
• increase fuel efficiency
• extend engine life
• world-leading technology

EWP® installation options

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.

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 EWP 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 EWP® 115, EWP® 140 and EWP® 150 Part DC8700 or DC8710 Mounting bracket is recommended.