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Return to Bosch Tankless Water Heaters Repair Parts Main Page   For Trade Sales Click Here   For Retail Sales Click Here Products   Bosch Water Heaters   Electric Space Heaters   PEX Radiant Heat   Heat Timer Controls   Grundfos Pumps   Taco Pumps   Gas Boilers   Electric Boilers   Indirect Storage Tanks   Hydronic Heating Supplies   Z Vent Z Flex Venting   Myson Radiators - Hydronic   Tankless Water Heaters   Heat Exchangers   Plumbing PEX   Fantech Fans   Solar Heating   SharkBite Fittings   Copper Fittings   Schulter Ditra   Pompco Well Pumps   Help   Site Guide   Online Manuals   Register Site Map PH1153 Bosch Tankless Water Heater - 125HX Repair Parts All Bosch Repair Parts are Non-Returnable Retail Prices are shown - once you have an account - then you can see Pro Pricing  Click here for more info! Bosch 125HX Technical Support     Bosch 125HX Service Bulletins Part # 8705406380 (870540623999) Bosch Aquastar 125HX Heat Exchanger LOC 3305 - Part 8705406380 (old part number was 8705406235) - Non-returnable Retail Price: $299.75 Pro Price Not Shown Part # 8707002649 (870700264999) Bosch Aquastar 125HX Water Valve 1 Port LOC 3370 - Part 8707002649 - Non-returnable Retail Price: $159.75 Pro Price Not Shown Part # 8707406104 (870740605900) Bosch Aquastar 125HX Hydro-Generator LOC 3470 - (Old Number was 87074060599) Part 8707406104 - Non-returnable Retail Price: $93.00 Pro Price Not Shown Part # 8705705009 (870570500999) Bosch Aquastar 125HX Volumetric flow governor LOC 3345 - Part 8705705009 - Non-returnable Retail Price: $17.20 Pro Price Not Shown Part # 8710103043 (871010304999) Bosch Aquastar 125HX Water Connections Gasket LOC 3565 - Part 8710103043 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8703401165 (870340105999) Bosch Aquastar 125HX Water valve set screw LOC 3220 (Old Part Number was 8703401051) - Part 8703401165 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8700503053 (870050305999) Bosch Aquastar 125HX Water Valve Diaphragm LOC 3080 - Part 8700503053 - Non-returnable Retail Price: $24.70 Pro Price Not Shown Part # 8700507001 (870050700999) Bosch Aquastar 125HX Inlet Filter Screen LOC 3095 - Part 8700507001 - Non-returnable Retail Price: $6.45 Pro Price Not Shown Part # 8708205249 (870820524999) Bosch Aquastar 125HX Water Valve Venturi LOC 3530 - Part 8708205249 - Non-returnable Retail Price: $10.25 Pro Price Not Shown Part # 8700703114 (870070311400) 125HX Water Elbow Fitting LOC 3120 - Part 8700703114 non-returnable Retail Price: $68.80 Pro Price Not Shown Part # 8700703139 (870070313999) Bosch Aquastar 125HX Outlet Flex Hose LOC 3125 - Part 8700703139 (old part number was 8700703130) - Non-returnable Retail Price: $40.90 Pro Price Not Shown Part # 8700705947 (870070594700) Bosch Aquastar 125HX Cold Water Pipe LOC 3150 - Part 8700705947 - Non-returnable Retail Price: $18.30 Pro Price Not Shown Part # 8700715178 (870071517800) Bosch Aquastar 125HX Connecting Pipe Hot LOC 3186 - Part 8700715178 - Non-returnable Retail Price: $40.90 Pro Price Not Shown Part # 8700306114 (870030611999) Bosch Aquastar 125HX Water Valve Pushrod LOC 3060 - Part 8700306114 - Non-returnable Retail Price: $17.20 Pro Price Not Shown Part # 8700103658 (870010365800) Bosch Aquastar 125HX Outlet Flex Hose Washer LOC 3020 - Part 8700103658 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8700707370 (870070737000) Bosch Aquastar 125HX Pilot Tube LOC 3170 - Part 8700707370 - Non-returnable Retail Price: $15.75 Pro Price Not Shown Part # 8702000111 (870200011999) Bosch Aquastar 125HX Temp Adjustment knob LOC 3205 - Part 8702000111 - Non-returnable Retail Price: $10.75 Pro Price Not Shown Part # 8702000219 (870040300999) Bosch Aquastar 125HX Temp Adjustment Collar and Knob LOC 3075 - Part 8702000219 (old part number was 8700403008) - Non-returnable Retail Price: $9.75 Pro Price Not Shown Part # 8705500101 (870550010100) Bosch Aquastar 125HX Water valve cover LOC 3325 - Part 8705500101 - Non-returnable Retail Price: $40.90 Pro Price Not Shown Part # 8708105491 (870810549100) Bosch Aquastar 125HX Pilot Assembly LP LOC 3475 - Part 8708105491 - Non-returnable Retail Price: $24.70 Pro Price Not Shown Part # 8718105051 (871810505999) Bosch Aquastar 125B Pilot Assembly NG or LP - LOC 3585 - Part 8718105051 - Non-returnable Retail Price: $17.20 Pro Price Not Shown Part # 8708200069 (870820006900) Bosch Aquastar 125HX Pilot Injector Natural Gas LOC 3510 - Part 8708200069 - Non-returnable Retail Price: $6.45 Pro Price Not Shown Part # 8708200312 (870820031200) Bosch Aquastar 125HX Pilot Injector Propane Gas LOC 3515 - Part 8708200312 (old part number was 8748200312) - Non-returnable Retail Price: $6.45 Pro Price Not Shown Part # 8700103173 (870010317300) Bosch Aquastar 125HX Pilot Tube Gasket LOC 3015 - Part 8700103173 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8708501249 (870850124900) Bosch Aquastar 125HX Pilot Electrovalve LOC 3540 - Part 8708501249 - Non-returnable Retail Price: $49.50 Pro Price Not Shown Part # 8708501250 (870850125000) Bosch Aquastar 125HX Burner Electrovalve LOC 3545 - Part 8708501250 - Non-returnable Retail Price: $54.80 Pro Price Not Shown Part # 8700205120 (870020512099) Bosch Aquastar 125HX Electrovalve O-Ring LOC 3040 - Part 8700205120 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8700205119 (870020511900) Bosch Aquastar 125HX O-Ring LOC 3035 - Part 8700205119 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8707207142 (870720714200) Bosch Aquastar 125HX Electronic Control Box LOC 3445 - Part 8707207142 - Non-returnable Retail Price: $190.30 Pro Price Not Shown Part # 8704404038 (870440403800) Bosch Aquastar 125HX Set of Cables LOC 3265 - Part 8704404038 - Non-returnable Retail Price: $24.70 Pro Price Not Shown Part # 8707206345 (870720634500) Bosch Aquastar 125HX Flue Gas Sensor LOC 3430 - Part 8707206345 - Non-returnable Retail Price: $49.50 Pro Price Not Shown Part # 8704404040 (870440404000) Bosch Aquastar 125HX Flame Sensor Cable LOC 3275 - Part 8704404040 - Non-returnable Retail Price: $11.85 Pro Price Not Shown Part # 8704404039 (870440403900) Bosch Aquastar 125HX Electrode Cable LOC 3270 - Part 8704404039 - Non-returnable Retail Price: $11.80 Pro Price Not Shown Part # 87181070670 (870810700600) Bosch Aquastar 125HX Piezo Electrode LOC 3485 - (Old Part number was 8708107006) 87181070670 - Non-returnable Retail Price: $10.75 Pro Price Not Shown Part # 8708107007 (870810700700) Bosch Aquastar 125HX Flame Sensor Rod LOC 3490 - Part 8708107007 - Non-returnable Retail Price: $10.75 Pro Price Not Shown Part # 8707206040 (870720604999) Bosch Aquastar 125HX Overheat Sensor (ECO) LOC 3405 - Part 8707206040 - Non-returnable Retail Price: $40.90 Pro Price Not Shown Part # 8342400000 (834240000999) Bosch Aquastar 125HX Regulator Natural Gas LOC 3000 - Part 8342400000 - Non-returnable Retail Price: $48.00 Pro Price Not Shown Part # 8345520000 (834552000999) Bosch Aquastar 125HX Regulator Propane Gas LOC 3005 - Part 8345520000 - Non-returnable Retail Price: $45.00 Pro Price Not Shown Part # 8705421752 (870542175299) Bosch Aquastar 125HX Front Cover - Drop ship from mfg - Part 8705421752 - Non-returnable Retail Price: $170.00 Pro Price Not Shown Part # 8707006353 (870700635399) Bosch Aquastar 125HX Water Valve 2 port (older model, check manual) LOC 3376 - Part 8707006353 - Non-returnable Retail Price: $179.00 Pro Price Not Shown Part # 8707011917 (870701191799) Bosch Aquastar 125HX Gas Valve NG - LOC 3670 - Part 8707011917 - Non-returnable Retail Price: $254.80 Pro Price Not Shown Part # 8707011945 (870701194599) Bosch Aquastar 125HX Gas Valve LP LOC 3675 - Part 8707011945 - Non-returnable Retail Price: $196.70 Pro Price Not Shown Part # 8708120296 (870812029699) Bosch Aquastar 125HX Main Burner LP w/ Washer LOC 3497 - Part 8708120296 - Non-returnable Retail Price: $136.50 Pro Price Not Shown Part # 8708120298 (870812029899) Bosch Aquastar 125HX Main Burner NG w/ Washer LOC 3498 - Part 8708120298 - Non-returnable Retail Price: $110.70 Pro Price Not Shown Part # 8708500289 (870850028999) Bosch Aquastar 125HX water valve selector screw LOC 3537 - Part 8708500289 - Non-returnable Retail Price: $29.00 Pro Price Not Shown Part # 8708504021 (870850402199) Bosch Aquastar 125HX Diaphragm Switch NG LOC 3556 - Part 8708504021 - Non-returnable Retail Price: $127.90 Pro Price Not Shown Part # 8708504049 (870850404999) Bosch Aquastar 125HX Diaphragm Switch LP LOC 3557 - Part 8708504049 - Non-returnable Retail Price: $127.90 Pro Price Not Shown Part # 8710103045 (871010304500) Bosch Aquastar 125HX Washer 1/2 Inch LOC 3570 - Part 8710103045 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8710103060 (871010306099) Bosch Aquastar 125HX Burner Assembly Washer LOC 3571 - Part 8710103060 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # WVKIT125HXPWV (WVKIT125HX02) Bosch Aquastar Water Valve rebuild kit for 125HX Poly Water Valve - LOC 6220 - Part WVKIT125HXPWV ( and DOWLUBE and 2 X 87034011650 and 2 X 8710103043 and 8705705009) - Non-returnable Retail Price: $26.75 Pro Price Not Shown Dow Lube (DOWLUBE00000) Package of Dow Lube - Loc 3615 - Non-returnable Retail Price: $2.95 Pro Price Not Shown Bosch 125HX Technical Support     Bosch 125HX Service Bulletins Return to Bosch Tankless Water Heaters Repair Parts Main Page Retail Prices are shown - once you have an account - then you can see Pro Pricing  Click here for more info!