670596 Genuine Aquastop Cold Water Extension Hose for Bosch, Siemens, Neff Appliances, BSH Inlet Hose Extension 00670596

When the Aquastop hose on a Bosch, Siemens or Neff appliance won't reach the tap, joining on a standard hose defeats the leak protection built into it. 670596 is the genuine BSH cold water Aquastop extension made for that job, also listed as 00670596. Aquastop is used on both BSH dishwashers and washing machines, so check that this number is listed for your model.

How an Aquastop extension works

Aquastop is the BSH leak protection system. The inlet hose has a double wall, and a valve at the tap end shuts off the water if the inner hose or the appliance leaks. Because of that, an ordinary hose extension would leave part of the connection unprotected. An Aquastop extension is designed to keep that protection in place while adding length, so you can position the appliance further from the water point. It's the answer when an appliance is being moved, a kitchen is renovated, or the tap sits in the next cabinet.

Part details

• Genuine BSH part 670596
• Also listed as 00670596
• Aquastop extension for the cold water inlet
• For Bosch, Siemens and Neff appliances with Aquastop

Installing the extension

Turn off the water tap and switch the appliance off at the wall. Follow the BSH fitting instructions, as the connection order matters for the leak protection to work. Tighten the threaded connections by hand plus a small turn, without crossing the threads. Turn the tap on slowly and check every joint for drips before running a cycle.

Questions about this part

Can I just use a standard hose extension instead?

Not on an Aquastop hose. A standard extension would leave a section of the water supply outside the leak protection. This genuine extension is designed to keep the Aquastop system working as intended.