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Bosch Tankless Water Heaters 520 HN Repair Parts

Bosch 520 HN Gas Tankless Water Heater Repair Parts.

Water Heater repair parts ship via Fedex 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.

Warning! All parts are non-returnable!

Viewing 29 Products

View All Bosch BBT Products

- v15276
- Bosch 520 HN O-ring - 87002053120 - Non-Returnable
  
  • LOC 3977 • Part Works For
  
  870020531200 • View Detail • Free Shipping Eligible • Available: 8
  
  $2.95
- $2.95
  
  Qty
- v14004
- Bosch Therm 520 HN Hydro-Generator miniMAX 2 - 87074060950 - Non-Returnable
  
  • LOC 8143 • Part Works For
  
  870740609500 • View Detail • Free Shipping Eligible • Available: 2
  
  $139.75
- $139.75
  
  Qty
- v11772
- Bosch Therm 520 HN Inlet Filter - 8700507059 - Non-returnable
  
  • LOC 3110 • Part Works For
  
  87005070595H • View Detail • Free Shipping Eligible
  
  $14.75
- $14.75
  
  Qty
- v11773
- Bosch Therm 520 HN Inlet Water Connection - 8700306110 - Non-Returnable
  
  • LOC 3850 • Part Works For
  
  87003061105H • View Detail • Free Shipping Eligible
  
  $20.75
- $20.75
  
  Qty
- v11774
- Bosch Therm 520 HN LP Gas Pressure Regulator - 8707406083 - Non-Returnable
  
  • Old Part Number was 8716487043 • LOC 3755 • Part Works For
  
  87074060835H • View Detail • Free Shipping Eligible
  
  $59.75
- $59.75
  
  Qty
- v11777
- Bosch Therm 520 HN Microswitch - 8707200020 - Non-Returnable
  
  • LOC 3775 • Part Works For
  
  87072000205H • View Detail • Free Shipping Eligible
  
  $72.75
- $72.75
  
  Qty
- v11775
- Bosch Therm 520 HN LP Gas Valve - 8707011962 - Non-Returnable
  
  • Old Part Number was 8707011922 • LOC 3983 • Part Works For
  
  87070119625H • View Detail • Free Ground Shipping
  
  $294.75
- $294.75
  
  Qty
- v11781
- Bosch Therm 520 HN O-Ring - 8700205119 - Non-returnable
  
  • LOC 3035 • Part Works For
  
  87002051195H • View Detail • Free Shipping Eligible
  
  $5.25
- $5.25
  
  Qty
- v11782
- Bosch Therm 520 HN Outlet Flex Hose - 8700703139 - Non-returnable
  
  • LOC 3125 • Old Part Number was 700703130 • Part Works For
  
  87007031395H • View Detail • Free Shipping Eligible
  
  $62.95
- $62.95
  
  Qty
- v11784
- Bosch Therm 520 HN Outlet Water Connection Assembly - 8700306187 - Non-Returnable
  
  • LOC 3880 • Part Works For
  
  87003061875H • View Detail • Free Shipping Eligible
  
  $24.95
- $24.95
  
  Qty
- v11785
- Bosch Therm 520 HN Overheat Sensor (ECO) - 87387171120 - Non-returnable
  
  • LOC 3415 • Also known as part number 8707206204 or 87 • Part Works For
  
  87072062045H • View Detail • Free Shipping Eligible
  
  $30.75
- $30.75
  
  Qty
- v11786
- Bosch Therm 520 HN Pilot Burner - 8708105655 - Non-returnable
  
  • LOC 3760 • Part Works For
  
  87081056555H • View Detail • Free Shipping Eligible
  
  $20.75
- $20.75
  
  Qty
- v11787
- Bosch Therm 520 HN Pilot Electrovalve - 8708501249 - Non-returnable
  
  • LOC 3540 • Part Works For
  
  87085012495H • View Detail • Free Shipping Eligible
  
  $67.95
- $67.95
  
  Qty
- v11788
- Bosch Therm 520 HN Pilot Tube Gasket - 8700103173 - Non-returnable
  
  • LOC 3015 • Part Works For
  
  87001031735H • View Detail • Free Shipping Eligible
  
  $3.95
- $3.95
  
  Qty
- v11790
- Bosch Therm 520 HN Flow Control - 8708500304 - Non-Returnable
  
  • LOC 3845 • Part Works For
  
  87085003045H • View Detail • Free Shipping Eligible
  
  $29.75
- $29.75
  
  Qty
- v11792
- Bosch Therm 520 HN Sparking Plug - 8708107013 - Non-Returnable
  
  • LOC 3730 • Part Works For
  
  87081070135H • View Detail • Free Shipping Eligible
  
  $29.75
- $29.75
  
  Qty
- v11794
- Bosch Therm 520 HN Water Connection Clip - 8701201020 - Non-Returnable
  
  • Also Known as Part Number 87012010200 • LOC 3815 • Part Works For
  
  87012010205H • View Detail • Free Shipping Eligible
  
  $6.75
- $6.75
  
  Qty
- v11795
- Bosch Therm 520 HN Water Filter Plug - 8700306148 - Non-Returnable
  
  • Also known as Part Number 87003061480 • Part Works For
  
  87003061485H • View Detail • Free Shipping Eligible
  
  $14.75
- $14.75
  
  Qty
- v11797
- Bosch Therm 520 HN Water Valve Cover - 8705500105 - Non-Returnable
  
  • LOC 3825 • Part Works For
  
  87055001055H • View Detail • Free Shipping Eligible
  
  $72.75
- $72.75
  
  Qty
- v11798
- Bosch Therm 520 HN Water Valve Push Rod - 8703204051 - Non-Returnable
  
  • LOC 3790 • Part Works For
  
  87032040515H • View Detail • Free Shipping Eligible
  
  $6.75
- $6.75
  
  Qty
- v11800
- Bosch Therm 520 HN Water Valve Venturi - 8708205279 - Non-Returnable
  
  • LOC 3975 • Part Works For
  
  87082052795H • View Detail • Free Shipping Eligible
  
  $15.75
- $15.75
  
  Qty
- v11771
- Bosch Therm 520 HN Ignitor Bracket - 8701300010 - Non-Returnable
  
  • LOC 3713 • Part Works For
  
  87013000105H • View Detail • Free Shipping Eligible
  
  $6.95
- $6.95
  
  Qty
- v11767
- Bosch Therm 520 HN Electrovalve O-Ring - 8700205120 - Non-returnable
  
  • LOC 3040 • Part Works For
  
  87002051205H • View Detail • Free Shipping Eligible
  
  $4.95
- $4.95
  
  Qty
- v12202
- Bosch Therm 520HN Main Burner Connector - 8705209056 - Non-Returnable
  
  • LOC 3867 • Part Works For
  
  87052090565H • View Detail • Free Shipping Eligible
  
  $39.75
- $39.75
  
  Qty
- v11776
- Bosch Therm 520 HN LP Pilot Injector - 8708200321 - Non-Returnable
  
  • LOC 3820 • Part Works For
  
  87082003215H • View Detail • Free Shipping Eligible
  
  $16.95
- $16.95
  
  Qty
- v11778
- Bosch Therm 520 HN Microswitch - 8707200020 - Non-Returnable
  
  • LOC 3775 • Part Works For
  
  87082003225H • View Detail • Free Shipping Eligible
  
  $6.75
- $6.75
  
  Qty
- v11779
- Bosch Therm 520 HN Nozzle (120) - For Natural Gas - 8708202124 - Non-returnable
  
  • LOC 7070 • Part Works For
  
  87082021245H • View Detail • Free Shipping Eligible
  
  $3.95
- $3.95
  
  Qty
- v11780
- Bosch Therm 520 HN Nozzle - For Liquid Propane - 8708202149 - Non-returnable
  
  • LOC 7072 • Part Works For
  
  87082021495H • View Detail • Free Shipping Eligible
  
  $3.75
- $3.75
  
  Qty
- v12940
- Bosch Therm 520 HN Water Elbow Fitting - 87007031140 - Non-Returnable
  
  • LOC 3120 • Part Works For
  
  87007031145H • View Detail • Free Shipping Eligible
  
  $90.75
- $90.75
  
  Qty

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