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Bosch Aquastar 125X 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 125X Heat Exchanger LOC 3305 - (Formerly - 8705406235) Part 8705406380 Non-Returnable Download Service Bulletin Disclaimer $245.50 * Part # 8705406380 Bosch Aquastar 125X Water Valve Assembly (conversion kit) LOC 3375 - Part 8707002810 Non-Returnable Download Service Bulletin Disclaimer $176.05 * Part # 8707002810 Bosch Aquastar 125X Water Valve Pushrod LOC 3230 - Part 8703406178 Non-Returnable Download Service Bulletin Disclaimer $9.75 * Part # 8703406178 Bosch Aquastar 125X Volumetric Water Governor LOC 3460 - Part 8707402015 Non-Returnable Download Service Bulletin Disclaimer $28.05 * Part # 8707402015 Bosch Aquastar 125X Water valve set screw LOC 3220 - Part 8703401165 (formerly 8703401051) Non-Returnable Download Service Bulletin Disclaimer $3.63 * Part # 8703401165 Bosch Aquastar 125X Water Connections Gasket LOC 3565 - Part 8710103043 Non-Returnable Download Service Bulletin Disclaimer $3.23 * Part # 8710103043 Bosch Aquastar 125X Water Valve Diaphragm LOC 3080 - Part 8700503053 Non-Returnable Download Service Bulletin Disclaimer $27.50 * Part # 8700503053 Bosch Aquastar 125X Inlet Filter LOC 3110 - Part 8700507059 Non-Returnable Download Service Bulletin Disclaimer $7.95 * Part # 8700507059 Bosch Aquastar 125X Water Valve Venturi LOC 3530 - Part 8708205249 Non-Returnable Download Service Bulletin Disclaimer $7.85 * Part # 8708205249 Bosch Aquastar 125X Water Elbow Fitting LOC 3120 - Part 8700703114 Non-Returnable Download Service Bulletin Disclaimer $64.05 * Part # 8700703114 Bosch Aquastar 125X Cold Water Pipe LOC 3130 - Part 8700705294 Non-Returnable Download Service Bulletin Disclaimer $19.95 * Part # 8700705294 Bosch Aquastar 125X Hot Water Pipe LOC 3140 - Part 8700705556 Non-Returnable Download Service Bulletin Disclaimer $37.50 * Part # 8700705556 Bosch Aquastar 125X Temp Adjustment knob LOC 3205 - Part 8702000111 Non-Returnable Download Service Bulletin Disclaimer $3.70 * Part # 8702000111 Bosch Aquastar 125X Temp Adjustment Collar and Knob LOC 3075 - Part 8702000219 (formerly 8700403008) Non-Returnable Download Service Bulletin Disclaimer $13.99 * Part # 8702000219 Bosch Aquastar 125X Pilot Assembly NG LOC 3585 - Part 8718105051 Non-Returnable Download Service Bulletin Disclaimer $18.95 * Part # 8718105051 Bosch Aquastar 125X Pilot Assembly LP LOC 3475 - Part 8708105491 Non-Returnable Download Service Bulletin Disclaimer $27.50 * Part # 8708105491 Bosch Aquastar 125X Pilot Injector Natural Gas (NG) LOC 3510 - Part 8708200069 Non-Returnable Download Service Bulletin Disclaimer $3.89 * Part # 8708200069 Bosch Aquastar 125X Pilot Injector Propane Gas (LP) LOC 3515 - Part 8708200312 Non-Returnable Download Service Bulletin Disclaimer $3.89 * Part # 8708200312 Bosch Aquastar 125X Pilot Tube LOC 3165 - Part 8700707349 Non-Returnable Download Service Bulletin Disclaimer $5.25 * Part # 8700707349 Bosch Aquastar 125X Pilot Tube Gasket LOC 3015 - Part 8700103173 Non-Returnable Download Service Bulletin Disclaimer $3.63 * Part # 8700103173 Bosch Aquastar 125X Electrovalve O-Ring LOC 3040 - Part 8700205120 Non-Returnable Download Service Bulletin Disclaimer $3.47 * Part # 8700205120 Bosch Aquastar 125X Pilot Electrovalve LOC 3540 - Part 8708501249 Non-Returnable Download Service Bulletin Disclaimer $43.50 * Part # 8708501249 Bosch Aquastar 125X Burner Electrovalve LOC 3545 - Part 8708501250 Non-Returnable Download Service Bulletin Disclaimer $51.50 * Part # 8708501250 Bosch Aquastar 125X Piezo Electrode LOC 3485 - Part 8708107006 Non-Returnable Download Service Bulletin Disclaimer $8.05 * Part # 8708107006 Bosch Aquastar 125X Flame Sensor Rod LOC 3490 - Part 8708107007 Non-Returnable Download Service Bulletin Disclaimer $8.15 * Part # 8708107007 Bosch Aquastar 125X Electronic Ignition Box LOC 3435 - Part 8707207011 Non-Returnable Download Service Bulletin Disclaimer $84.35 * Part # 8707207011 Bosch Aquastar 125X Overheat Sensor (ECO) LOC 3405 - Part 8707206040 Non-Returnable Download Service Bulletin Disclaimer $38.75 * Part # 8707206040 Bosch Aquastar 125X On/Off Switch LOC 3390 - Part 8707200014 Non-Returnable Download Service Bulletin Disclaimer $9.85 * Part # 8707200014 Bosch Aquastar 125X LED Control LOC 3450 - Part 8707305001 Non-Returnable Download Service Bulletin Disclaimer $42.25 * Part # 8707305001 Bosch Aquastar 125X Battery Box LOC 3090 - Part 8700505062 Non-Returnable Download Service Bulletin Disclaimer $11.75 * Part # 8700505062 Bosch Aquastar 125X Microswitch LOC 3385 - Part 8707200007 Non-Returnable Download Service Bulletin Disclaimer $32.50 * Part # 8707200007 Bosch Aquastar 125X Regulator Natural Gas (NG) LOC 3000 - Part 8342400000 Non-Returnable Refer to Manual Disclaimer $31.05 * Part # 8342400000 Bosch Aquastar 125X Regulator Propane Gas (LP) LOC 3005 - Part 8345520000 Non-Returnable Refer to Manual Disclaimer $37.25 * Part # 8345520000 Bosch Aquastar 125X Set of Cables complete LOC 3236 - Part 8704401035 Non-Returnable Download Service Bulletin Disclaimer $48.55 * Part # 8704401035 no image available Bosch Aquastar 125X Front Cover LOC 3321 - Drop ship from mfg - Part 8705421255 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $152.95 * Part # 8705421255 Bosch Aquastar 125X Gas valve NG LOC 3660 - Drop ship frm mfg - Part 8707011729 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $219.55 * Part # 8707011729 Bosch Aquastar 125X Gas valve LP LOC 3665 - Drop ship from mfg - Part 8707011730 Non-Returnable Download Service Bulletin Disclaimer This item ships Directly from Bosch and may take up to 2 extra days to process $207.25 * Part # 8707011730 Bosch Aquastar 125X 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 125X 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 125X Water Valve selector screw LOC 3536 - Part 8708500251 Non-Returnable Download Service Bulletin Disclaimer $25.05 * Part # 8708500251 Bosch Aquastar 125X Water valve slow ignition valve LOC 3555 - Part 8708503063 Non-Returnable Download Service Bulletin Disclaimer $9.25 * Part # 8708503063 Bosch Aquastar 125X 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 125X 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 125X Heat Exchanger Washer LOC 3570 - Part 8710103045 Non-Returnable Download Service Bulletin Disclaimer $3.63 * Part # 8710103045 Bosch Aquastar 125X Burner Assembly Washer LOC 3571 - Part 8710103060 Non-Returnable Download Service Bulletin Disclaimer $3.63 * Part # 8710103060 Bosch Aquastar Water Valve rebuild kit for 125X with Brass Water Valve LOC 3220/3230/3555/3460/3565/3570/3615 - Part #WVKIT 125X (8703406178 and 8708503063 and 8707402015 and DOWLUBE and 2 X 8710103043 and 2 X 8710103045 and 2 X 8703401051) Non-Returnable Download Service Bulletin Disclaimer $46.95 * Part # WVKIT125X 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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