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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 PH1151 Bosch Tankless Water Heater (For Models Prior to 2003) - 125FX 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 125FX Technical Support     Bosch 125FX Service Bulletins Part # 8705406380 (870540623999) Bosch Aquastar 125FX Heat Exchanger LOC 3305 - Part 8705406380 - (old part number was 8705406235)- Non-returnable Retail Price: $299.75 Pro Price Not Shown Part # 8707002810 (870700281000) Bosch Aquastar 125FX Water Valve Assembly (conversion kit) LOC 3375 - Part 8707002810 - Non-returnable Retail Price: $189.95 Pro Price Not Shown Part # 8703406244 (870340617999) Bosch Aquastar 125FX Water Valve Pushrod LOC 3230 - Part 87055001450 (old part number was 8703406244 or 8703406178) - Non-returnable Retail Price: $10.00 Pro Price Not Shown Part # 8710103043 (871010304999) Bosch Aquastar 125FX Water Connections Gasket LOC 3565 - Part 8710103043 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8703401165 (870340105999) Bosch Aquastar 125FX 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 125FX Water Valve Diaphragm LOC 3080 - Part 8700503053 - Non-returnable Retail Price: $24.70 Pro Price Not Shown Part # 8700507059 (870050705999) Bosch Aquastar 125FX Inlet Filter LOC 3110 - Part 8700507059 - Non-returnable Retail Price: $7.50 Pro Price Not Shown Part # 8707402015 (870740201500) Bosch Aquastar 125FX Volumetric Water Governor LOC 3460 - Part 8707402015 - Non-returnable Retail Price: $24.00 Pro Price Not Shown Part # 8700703114 (870070311400) 125FX Water Elbow Fitting LOC 3120 - Part 8700703114 non-returnable Retail Price: $68.80 Pro Price Not Shown Part # 8700705294 (870070529999) Bosch Aquastar 125FX Cold Water Pipe LOC 3130 - Part 8700705294 - Non-returnable Retail Price: $19.00 Pro Price Not Shown Part # 8700705556 (870070555999) Bosch Aquastar 125FX Hot Water Pipe LOC 3140 - Part 8700705556 - Non-returnable Retail Price: $36.00 Pro Price Not Shown Part # 8708205249 (870820524999) Bosch Aquastar 125FX Water Valve Venturi LOC 3530 - Part 8708205249 - Non-returnable Retail Price: $10.25 Pro Price Not Shown Part # 8702000219 (870040300999) Bosch Aquastar 125FX 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 # 8702000111 (870200011999) Bosch Aquastar 125FX Temp Adjustment knob LOC 3205 - Part 8702000111 - Non-returnable Retail Price: $10.75 Pro Price Not Shown Part # 8718105051 (871810505999) Bosch Aquastar 125FX Pilot Assembly NG or LP - LOC 3585 - Part 8718105051 - Non-returnable Retail Price: $17.20 Pro Price Not Shown Part # 8708105491 (870810549100) Bosch Aquastar 125FX Pilot Assembly LP LOC 3475 - Part 8708105491 - Non-returnable Retail Price: $24.70 Pro Price Not Shown Part # 8708200069 (870820006900) Bosch Aquastar 125FX Pilot Injector Natural Gas LOC 3510 - Part 8708200069 - Non-returnable Retail Price: $6.45 Pro Price Not Shown Part # 8708200312 (870820031200) Bosch Aquastar 125FX Pilot Injector Propane Gas LOC 3515 - Part 8708200312 (old part number was 8748200312) - Non-returnable Retail Price: $6.45 Pro Price Not Shown Part # 8700707349 (870070734900) Bosch Aquastar 125FX Pilot Tube LOC 3165 - Part 8700707349 - Non-returnable Retail Price: $12.95 Pro Price Not Shown Part # 8700103173 (870010317300) Bosch Aquastar 125FX Pilot Tube Gasket LOC 3015 - Part 8700103173 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8700205120 (870020512099) Bosch Aquastar 125FX Electrovalve O-Ring LOC 3040 - Part 8700205120 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8707206040 (870720604999) Bosch Aquastar 125FX Overheat Sensor (ECO) LOC 3405 - Part 8707206040 - Non-returnable Retail Price: $40.90 Pro Price Not Shown Part # 8708501249 (870850124900) Bosch Aquastar 125FX Pilot Electrovalve LOC 3540 - Part 8708501249 - Non-returnable Retail Price: $49.50 Pro Price Not Shown Part # 8708501250 (870850125000) Bosch Aquastar 125FX Burner Electrovalve LOC 3545 - Part 8708501250 - Non-returnable Retail Price: $54.80 Pro Price Not Shown Part # 87181070670 (870810700600) Bosch Aquastar 125FX Piezo Electrode LOC 3485 - Part 8708107006 - Non-returnable Retail Price: $10.75 Pro Price Not Shown Part # 8708107007 (870810700700) Bosch Aquastar 125FX Flame Sensor Rod LOC 3490 - Part 8708107007 - Non-returnable Retail Price: $10.75 Pro Price Not Shown Part # 8707207011 (870720701100) Bosch Aquastar 125FX Electronic Ignition Box LOC 3435 - Part 8707207011 - Non-returnable Retail Price: $93.00 Pro Price Not Shown Part # 8707206185 (870720618500) Bosch Aquastar 125FX Flue Gas Safety Device LOC 3410 - Part 8707206185 - Non-returnable Retail Price: $107.00 Pro Price Not Shown Part # 8707200014 (870720001400) Bosch Aquastar 125FX On/Off Switch LOC 3390 - Part 8707200014 - Non-returnable Retail Price: $12.95 Pro Price Not Shown Part # 8707200007 (870720000700) Bosch Aquastar 125FX Microswitch LOC 3385 - Part 8707200007 - Non-returnable Retail Price: $26.90 Pro Price Not Shown Part # 8342400000 (834240000999) Bosch Aquastar 125FX Regulator Natural Gas LOC 3000 - Part 8342400000 - Non-returnable Retail Price: $48.00 Pro Price Not Shown Part # 8345520000 (834552000999) Bosch Aquastar 125FX Regulator Propane Gas LOC 3005 - Part 8345520000 - Non-returnable Retail Price: $45.00 Pro Price Not Shown Part # 8701302164 (870130216499) Bosch Aquastar 125FX Fan Protection LOC 3201 - Part 8701302164 - Non-returnable Retail Price: $32.00 Pro Price Not Shown Part # 8705421255 (870542125599) Bosch Aquastar 125FX Front Cover - LOC 3321 - Part 8705421255 - Non-returnable Retail Price: $164.00 Pro Price Not Shown Part # 8707011811 (870701181199) Bosch Aquastar 125FX Gas Valve NG LOC 3630 - Part 8707011811 - Non-returnable Retail Price: $428.00 Pro Price Not Shown Part # 8707101021 (870710102199) Bosch Aquastar 125FX Electric Control Box - LOC 3973 - Part 8707101021 - Non-returnable Retail Price: $309.00 Pro Price Not Shown Part # 8707204023 (870720402399) Bosch Aquastar 125FX Exhaust fan Assembly - LOC 3937 - Part 8707204023 - Non-returnable Retail Price: $251.00 Pro Price Not Shown Part # 8708120296 (870812029699) Bosch Aquastar 125FX Main Burner LP w/ Washer LOC 3497 - Part 8708120296 - Non-returnable Retail Price: $136.50 Pro Price Not Shown Part # 8708120298 (870812029899) Bosch Aquastar 125FX Main Burner NG w/ Washer LOC 3498 - Part 8708120298 - Non-returnable Retail Price: $110.70 Pro Price Not Shown Part # 8708500251 (870850025199) Bosch Aquastar 125FX Water Valve selector screw LOC 3536 - Part 8708500251 - Non-returnable Retail Price: $22.00 Pro Price Not Shown Part # 8708503063 (870850306999) Bosch Aquastar Water Valve Slow Ignition Valve - LOC 3555 - 8708503063 - Non-returnable Retail Price: $11.25 Pro Price Not Shown Part # 8708504021 (870850402199) Bosch Aquastar 125FX Diaphragm Switch NG LOC 3556 - Part 8708504021 - Non-returnable Retail Price: $127.90 Pro Price Not Shown Part # 8708504049 (870850404999) Bosch Aquastar 125FX Diaphragm Switch LP LOC 3557 - LOC 3557 - Part 8708504049 - Non-returnable Retail Price: $127.90 Pro Price Not Shown Part # 8710103045 (871010304500) Bosch Aquastar 125FX Washer 1/2 Inch LOC 3570 - Part 8710103045 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # 8710103060 (871010306099) Bosch Aquastar 125FX Burner Assembly Washer LOC 3571 - Part 8710103060 - Non-returnable Retail Price: $5.35 Pro Price Not Shown Part # WVKIT125FXBW (WVKIT125FXB2) Bosch Water Valve rebuild kit 125FX with Brass Water Valve - LOC 6210 - Part WVKIT125FXBWV (8703406244 and 8708503063 and DOWLUBE and 8707402015 and 2 X 8710103043 and 2 X 8710103045 and 2 X 87034011650 - Non-returnable Retail Price: $44.00 Pro Price Not Shown Dow Lube (DOWLUBE00000) Package of Dow Lube - Loc 3615 - Non-returnable Retail Price: $2.95 Pro Price Not Shown Bosch 125FX Technical Support     Bosch 125FX 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!