EWP115 Alloy Kit - Remote Electric Water Pump (12V)
The EWP®115 (115 litres per minute) is suitable for small, medium, large, high-performance and 4WD vehicles. It improves engine cooling control and capacity while helping deliver more power and torque, with the potential for improved fuel economy.
A practical alternative to a mechanical belt-driven water pump or fitted as an auxiliary pump. Mechanical pumps run directly off the engine and sap power. The EWP®115 is hardwired into your electrical system, bypassing the engine and potentially releasing up to an additional 10 kW (13 hp). Our EWP range is also extensively used in intercooler applications.
| Option | Part # | Notes |
|---|---|---|
| Pump Only | #8140 | Pump only (Alloy 12V). |
| Kit | #8040 | Pump + basic wiring and mounting essentials (see contents below). |
| Combo with Controller | #8950 | Pack with controller solution (controller also available separately). |
| Item | Qty |
|---|---|
| EWP®115 Alloy 12V | 1 |
| EWP® Basic Wiring Harness | 1 |
| Hose Clamps | 2 |
| RED – Wire Joiner | 1 |
| RED – 6mm Ring Terminal | 1 |
| RELAY – 12V 40 Amp 5 Pin W/ Resistor Protection | 1 |
| SCREW – SELF TAP 8X3/8 BZ | 1 |
| Voltage | 12 Volt Pump |
| Operating voltage | 3V DC to 15V DC |
| Maximum current | 10A @ 13V |
| Flow rate (max) | 139 L/min (36.7 US gal/min) @ 13V DC |
| Operating temp. | -40° to 120°C (-40° to 248°F) |
| Pump design | Clockwise centrifugal with volute chamber |
| Pump weight | 920 grams (2.03 lb) |
| Pump material | Aluminium (powder coated) |
| Burst pressure | 500 kPa (72.5 psi) |
| Seal | Ceramic face seal |
| Self Priming | No, none of our pumps are self-priming |
| Fits hose sizes | 35mm to 51mm (1⅜” to 2”) Inlet: -16AN (12) Outlet: -16AN (12) |
| Push-On fitting size | EWP Inlet & Outlet 38mm
|
EWP & Controller Installation Demonstration
Combined with an LCD EWP®/Fan Digital Controller (Sold separately Part #8002 or EWP® 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. The Thermatic® Fan/s will be activated automatically once the engine coolant rises 3°C (5.4°F) above the targeted (set) temperature. The Digital Controller will automatically run on for three minutes (or to 10°C / 14°F below the set temperature) after engine shut down, eliminating ‘heat soak’ and extending engine life. The EWP® Controller Combo Pack is supplied in a do-it-yourself kit with everything you need for fitment to your vehicle’s engine, including an easy-to-follow DIY instruction booklet.
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)
Removed mechanical water pump (Ideal)
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 #8700 or #8710 Mounting bracket is recommended.