Walbro 340lph Inline Fuel Pump & Setup Kit
walGCL627-2
Walbro 340lph Inline Fuel Pump & Setup Kit
394,60 € excl. VAT
Inline Fuel Pumps
Is the original pump no longer enough because the engine needs to make more power? An inline fuel pump is mounted in the fuel line outside the tank and can deliver extra flow, either as the only pump or as a supplement to an in-tank pump.
What does an inline fuel pump do?
The pump sits in the fuel line outside the tank and is electrically driven, unlike mechanical fuel pumps. It can replace or supplement pumps mounted in the tank. The placement depends on the car, but the pump should typically sit low and close to the tank, as most inline pumps push better than they pull.
How to choose the right pump
The flow, here from 190 l/h from Walbro to 440 l/h from BLOX Racing, must match your power goal, fuel pressure and injectors. More flow is not automatically better, as it also places demands on the regulator, lines and power supply.
- Fuel type: Some Walbro pumps are for petrol only and not approved for E85.
- Connections: Check the threads, e.g. M18x1.5 inlet and M12x1.5 outlet on a pump from AEM.
- Pump only or kit: With kits such as the COMP Cams EZ-EFI Fuel Master Kit, you should check which fittings and parts are included.
- Power: More powerful pumps typically draw more current, so check the relay and wire gauge.
Frequently asked questions
Can I use E85 with an inline fuel pump?
It depends on the pump. Several Walbro pumps in this category are marked as petrol only and not approved for E85. Always check the description for the specific part number before choosing a pump for ethanol.
Does an inline pump have to replace the in-tank pump?
Not necessarily. It can be used as the only pump or mounted after the in-tank pump so they work together. The choice depends on the car's fuel system, your power goal and the space under the car.
Why can an inline pump start making noise?
This is typically because the pump is starved of fuel on the suction side, e.g. due to mounting too high, a clogged filter or a low fuel level. Too low voltage can also cause problems, so check the supply and filter first.
