Water Valve Part Numbers for Older Bosch Aquastar 125 Series Gas Tankless Water Heaters

All of the older Bosch Aquastar 125 series model gas tankless water heaters are no longer made.  The Aquastar 125 series were distributed by Controlled Energy Corporation (CEC) over 8 years ago and CEC has sold the company to Bosch.  Below is a list of all the water-valves and their part numbers and all these valves are sold through GlobalTowne.  Please be aware of the serial number cutoffs for some of the water valves as they have changed over the years.

Aquastar 125B Water Valve: for heaters with serial number beginning with 380 or below: 8707002499 (8-707-002-499, 87070024990)

Aquastar 125B Water Valve: for heaters with serial number beginning with 381 and above: 8707002649 (8-707-002-649, 87070026490)

Aquastar 125BL Water Valve: 8707002478 (8-707-002-478, 87070024780)

Aquastar 125BS Water Valve: 8707002393 (8-707-002-393, 87070023930)

Aquastar 125BO Water Valve: 8707002708 (8-707-002-708, 87070027080)

Aquastar 125X Water Valve: 8707002810 (8-707-002-810, 87070028100)

Aquastar 125FX Water Valve: for heaters with serial number beginning with 380 or below: 8707002810 (8-707-002-810, 87070028100) This part replaces part number 8707002534.

Aquastar 125FX Water Valve: for heaters with serial number beginning with 381 and above: 8707006361 (8-707-006-361, 87070063610)

Aquastar 125HX Water Valve: 8707002649 (8-707-002-649, 87070026490)

Please visit our website at www.globaltowne.com for all spare parts.  Some of the Bosch Aquastar replacement parts are not listed so please call us at 888-726-9752.