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Bosch Aquastar 125HX Water Heater Repair Parts Buy Page Disclaimer Searching for a Part number? click here Looking for a Part that is not listed? click here *The prices on this page are for Web Orders Only! Contractors & Plumbers - click here for savings Water Heater repair parts ship via UPS or USPS. Most small, light weight parts on this page ship via USPS. Please be sure to provide us with a valid postal address if it's different than the UPS address. Most shipments are received within 2 to 10 business days. Faster shipping is available. Warning!  All parts are non-returnable.    Technical Support     Parts Diagram     Service Bulletins     Faster Shipping   Description Web Order Cost Change quantity in your Shopping Cart. You can always remove items later. Bosch Aquastar 125HX Heat Exchanger LOC 3305 - (Formerly - 8705406235) Part 8705406380 Non-Returnable Download Service Bulletin Disclaimer $245.50 * Part # 8705406380 Bosch Aquastar 125HX Water valve 1 Port LOC 3370 - Part 8707002649 Non-Returnable Download Service Bulletin Disclaimer $151.75 * Part # 8707002649 Bosch Aquastar 125HX Water Valve Pushrod LOC 3060 - Part 8700306114 Non-Returnable Download Service Bulletin Disclaimer $17.50 * Part # 8700306114 Bosch Aquastar 125HX Volumetric flow governor LOC 3345 - Part 8705705009 Non-Returnable Download Service Bulletin Disclaimer $11.50 * Part # 8705705009 Bosch Aquastar 125HX Water Connections Gasket LOC 3565 - Part 8710103043 Non-Returnable Download Service Bulletin Disclaimer $3.23 * Part # 8710103043 Bosch Aquastar 125HX Water valve set screw LOC 3220 - Part 8703401165 (formerly 8703401051) Non-Returnable Download Service Bulletin Disclaimer $3.63 * Part # 8703401165 Bosch Aquastar 125HX Water Valve Diaphragm LOC 3080 - Part 8700503053 Non-Returnable Download Service Bulletin Disclaimer $27.50 * Part # 8700503053 Bosch Aquastar 125HX Inlet Filter Screen LOC 3095 - Part 8700507001 Non-Returnable Download Service Bulletin Disclaimer $3.75 * Part # 8700507001 Bosch Aquastar 125HX Water Valve Venturi LOC 3530 - Part 8708205249 Non-Returnable Download Service Bulletin Disclaimer $7.85 * Part # 8708205249 Bosch Aquastar 125HX Water Elbow Fitting LOC 3120 - Part 8700703114 Non-Returnable Download Service Bulletin Disclaimer $64.05 * Part # 8700703114 Bosch Aquastar 125HX Outlet Flex Hose LOC 3125 - Part 8700703139 Non-Returnable Download Service Bulletin Disclaimer $38.05 * Part # 8700703139 Bosch Aquastar 125HX Cold Water Pipe LOC 3150 - Part 8700705947 Non-Returnable Download Service Bulletin Disclaimer $16.75 * Part # 8700705947 Bosch Aquastar 125HX Connecting Pipe Hot LOC 3186 - Part 8700715178 Non-Returnable Download Service Bulletin Disclaimer $37.95 * Part # 8700715178 Bosch Aquastar 125HX Hydro-Generator LOC 3470 - Part 8707406059 Non-Returnable Download Service Bulletin Disclaimer $110.95 * Part # 8707406059 Bosch Aquastar 125HX Outlet Flex Hose Washer LOC 3020 - Part 8700103658 Non-Returnable Download Service Bulletin Disclaimer $3.65 * Part # 8700103658 Bosch Aquastar 125HX Pilot Tube LOC 3170 - Part 8700707370 Non-Returnable Download Service Bulletin Disclaimer $17.05 * Part # 8700707370 Bosch Aquastar 125HX Temp Adjustment knob LOC 3205 - Part 8702000111 Non-Returnable Download Service Bulletin Disclaimer $7.85 * Part # 8702000111 Bosch Aquastar 125HX Temp Adjustment Collar and Knob LOC 3075 - Part 8702000219 (formerly 8700403008) Non-Returnable Download Service Bulletin Disclaimer $13.99 * Part # 8702000219 Bosch Aquastar 125HX Water valve cover LOC 3325 - Part 8705500101 Non-Returnable Download Service Bulletin Disclaimer $40.50 * Part # 8705500101 Bosch Aquastar 125HX Pilot Assembly LP LOC 3475 - Part 8708105491 Non-Returnable Download Service Bulletin Disclaimer $27.50 * Part # 8708105491 Bosch Aquastar 125HX Pilot Assembly NG LOC 3585 - Part 8718105051 Non-Returnable Download Service Bulletin Disclaimer $18.95 * Part # 8718105051 Bosch Aquastar 125HX Pilot Injector Natural Gas (NG) LOC 3510 - Part 8708200069 Non-Returnable Download Service Bulletin Disclaimer $3.89 * Part # 8708200069 Bosch Aquastar 125HX Pilot Injector Propane Gas (LP) LOC 3515 - Part 8708200312 Non-Returnable Download Service Bulletin Disclaimer $3.89 * Part # 8708200312 Bosch Aquastar 125HX Pilot Tube Gasket LOC 3015 - Part 8700103173 Non-Returnable Download Service Bulletin Disclaimer $3.63 * Part # 8700103173 Bosch Aquastar 125HX Pilot Electrovalve LOC 3540 - Part 8708501249 Non-Returnable Download Service Bulletin Disclaimer $43.50 * Part # 8708501249 Bosch Aquastar 125HX Burner Electrovalve LOC 3545 - Part 8708501250 Non-Returnable Download Service Bulletin Disclaimer $51.50 * Part # 8708501250 Bosch Aquastar 125HX Electrovalve O-Ring LOC 3040 - Part 8700205120 Non-Returnable Download Service Bulletin Disclaimer $3.47 * Part # 8700205120 Bosch Aquastar 125HX O-Ring LOC 3035 - Part 8700205119 Non-Returnable Download Service Bulletin Disclaimer $3.63 * Part # 8700205119 Bosch Aquastar 125HX Electronic Control Box LOC 3445 - Part 8707207142 Non-Returnable Download Service Bulletin Disclaimer $177.75 * Part # 8707207142 Bosch Aquastar 125HX Set of Cables LOC 3265 - Part 8704404038 Non-Returnable Download Service Bulletin Disclaimer $28.75 * Part # 8704404038 Bosch Aquastar 125HX Flue Gas Sensor LOC 3430 - Part 8707206345 Non-Returnable Download Service Bulletin Disclaimer $45.95 * Part # 8707206345 Bosch Aquastar 125HX Flame Sensor Cable LOC 3275 - Part 8704404040 Non-Returnable Download Service Bulletin Disclaimer $10.55 * Part # 8704404040 Bosch Aquastar 125HX Electrode Cable LOC 3270 - Part 8704404039 Non-Returnable Download Service Bulletin Disclaimer $13.25 * Part # 8704404039 Bosch Aquastar 125HX Piezo Electrode LOC 3485 - Part 8708107006 Non-Returnable Download Service Bulletin Disclaimer $8.05 * Part # 8708107006 Bosch Aquastar 125HX Flame Sensor Rod LOC 3490 - Part 8708107007 Non-Returnable Download Service Bulletin Disclaimer $8.15 * Part # 8708107007 Bosch Aquastar 125HX Overheat Sensor (ECO) LOC 3405 - Part 8707206040 Non-Returnable Download Service Bulletin Disclaimer $38.75 * Part # 8707206040 Bosch Aquastar 125HX Regulator Natural Gas (NG) LOC 3000 - Part 8342400000 Non-Returnable Refer to Manual Disclaimer $39.50 * Part # 8342400000 Bosch Aquastar 125HX Regulator Propane Gas (LP) LOC 3005 - Part 8345520000 Non-Returnable Refer to Manual Disclaimer $40.05 * Part # 8345520000 Bosch Aquastar 125HX Front Cover LOC 3322 - Drop ship from mfg - Part 8705421752 Non-Returnable Refer to Manual Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $157.75 * Part # 8705421752 Bosch Aquastar 125HX Water Valve 2 port (older model, check manual) LOC 3376 - Drop ship from mfg - Part 8707006353 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $165.75 * Part # 8707006353 Bosch Aquastar 125HX Gas Valve NG LOC 3670 - Drop ship from mfg - Part 8707011917 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $236.75 * Part # 8707011917 Bosch Aquastar 125HX Gas Valve LP LOC 3675 - Drop ship from mfg - Part 8707011945 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $184.15 * Part # 8707011945 Bosch Aquastar 125HX Main Burner LP w/ Washer LOC 3497 - Drop ship from mfg - Part 8708120296 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $128.10 * Part # 8708120296 Bosch Aquastar 125HX Main Burner NG w/ Washer LOC 3498 - Drop ship from mfg - Part 8708120298 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $102.95 * Part # 8708120298 Bosch Aquastar 125HX water valve selector screw LOC 3537 - Part 8708500289 Non-Returnable Download Service Bulletin Disclaimer $27.25 * Part # 8708500289 Bosch Aquastar 125HX Diaphragm Switch NG LOC 3556 - Part 8708504021 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $118.25 * Part # 8708504021 Bosch Aquastar 125HX Diaphragm Switch LP LOC 3557 - Drop ship from mfg - Part 8708504049 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $118.25 * Part # 8708504049 Bosch Aquastar 125HX Heat Exchanger Washer LOC 3570 - Part 8710103045 Non-Returnable Download Service Bulletin Disclaimer $3.63 * Part # 8710103045 Bosch Aquastar 125HX Burner Assembly Washer LOC 3571 - Part 8710103060 Non-Returnable Download Service Bulletin Disclaimer $3.63 * Part # 8710103060 Bosch Aquastar Water Valve rebuild kit for 125HX Poly Water Valve LOC 3060/3615/3220/3565 - Part #WVKIT125HXPWV (8700306114 and DOWLUBE and 2 X 8703401051 and 2 X 8710103043) Non-Returnable Download Service Bulletin Disclaimer $35.95 * Part # WVKIT125HXPWV Technical Support     Parts Diagram     Service Bulletins     Faster Shipping Disclaimer Searching for a Part number? click here Looking for a Part that is not listed? click here *The prices on this page are for Web Orders Only! Contractors & Plumbers - click here for savings Water Heater repair parts ship via UPS or USPS. Most small, light weight parts on this page ship via USPS. Please be sure to provide us with a valid postal address if it's different than the UPS address. Most shipments are received within 2 to 10 business days. Faster shipping is available. Warning!  All parts are non-returnable. HouseNeeds Return Policy      HouseNeeds Shipping Policy Bosch Parts Select Page

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