Retirement Sale - Everything in stock 30% off as of 5.22.23

Free Shipping on Orders Over $200*

Menu

Bosch Aquastar 125X Water Heater Repair Parts

Bosch Aquastar 125X 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

- v7409
- Bosch Aquastar 125X Water Valve Assembly (conversion kit) - 8707002810 - Non-returnable
  
  • Old Part Number was 8707002534 and 87070028100 • LOC 3375 • LOC 3375 • Part Works For
  
  870700281000 • View Detail • Free Ground Shipping • Available: 3
  
  $245.75
- $245.75
  
  Qty
- v7431
- Bosch Aquastar 125X Burner Electrovalve - 8708501250 - Non-returnable
  
  • Also Known as Part number 87085012500 • LOC 3545 • Part Works For
  
  870850125000 • View Detail • Free Shipping Eligible • Available: 2
  
  $77.75
- $77.75
  
  Qty
- v7434
- Bosch Aquastar 125X Electronic Ignition Box - 8707207011 - Non-returnable
  
  • Also Known as Part Number 870720701100 • LOC 3435 • Part Works For
  
  870720701100 • View Detail • Free Shipping Eligible • Available: 5
  
  $189.75
- $189.75
  
  Qty
- v7444
- Bosch Aquastar 125X Gas valve LP - 8707011730 - Non-returnable
  
  • Drop Shipped from Mfg • Part Works For
  
  870701173099 • View Detail • Free Ground Shipping • Available: 1
  
  $349.75
- $349.75
  
  Qty
- v7412
- Bosch Aquastar 125X Volumetric Water Governor - 8707402015 - Non-returnable
  
  • LOC 3460 • Part Works For
  
  870740201500 • View Detail • Free Shipping Eligible • Available: 6
  
  $38.75
- $38.75
  
  Qty
- v7410
- Bosch Aquastar 125X Water Valve Pushrod - 87034062440 - Non-returnable
  
  • Old Part Number Was 87055001450 • LOC 3230 • Part Works For
  
  870340617996 • View Detail • Free Shipping Eligible
  
  $17.75
- $17.75
  
  Qty
- v7413
- Bosch Aquastar 125X Water Valve Set Screw - 8703401165 - Non-returnable
  
  • Old Part Number was 8703401051 • LOC 3220 • Part Works For
  
  870340105996 • View Detail • Free Shipping Eligible
  
  $8.95
- $8.95
  
  Qty
- v7414
- Bosch Aquastar 125X Water Connections Gasket - 8710103043 - Non-returnable
  
  • Also Known as 87101030430 • LOC 3565 • Part Works For
  
  871010304996 • View Detail • Free Shipping Eligible
  
  $4.75
- $4.75
  
  Qty
- v7416
- Bosch Aquastar 125X Inlet Filter - 8700507059 - Non-returnable
  
  • LOC 3110 • Part Works For
  
  870050705996 • View Detail • Free Shipping Eligible
  
  $14.75
- $14.75
  
  Qty
- v7418
- Bosch Aquastar 125X Water Elbow Fitting - 8700703114 - non-returnable
  
  • Also Known as Part Number 87007031140 • LOC 3120 • Part Works For
  
  870070311406 • View Detail • Free Shipping Eligible
  
  $90.75
- $90.75
  
  Qty
- v7419
- Bosch Aquastar 125X Cold Water Pipe - 8700705294 - Non-returnable
  
  • LOC 3130 • Part Works For
  
  870070529996 • View Detail • Free Shipping Eligible
  
  $31.95
- $31.95
  
  Qty
- v7420
- Bosch Aquastar 125X Hot Water Pipe - 8700705556 - Non-returnable
  
  • Also Known as 87007055560 • LOC 3140 • Part Works For
  
  870070555996 • View Detail • Free Shipping Eligible
  
  $57.95
- $57.95
  
  Qty
- v7421
- Bosch Aquastar 125X Temp Adjustment Knob - 8702000111 - Non-returnable
  
  • Also Known as Part Number 87020001110 • LOC 3205 • Part Works For
  
  870200011996 • View Detail • Free Shipping Eligible
  
  $15.75
- $15.75
  
  Qty
- v7422
- Bosch Aquastar 125X Temp Adjustment Collar and Knob - 8702000219 - Non-returnable
  
  • Old Part Number was 8700403008 and 87020002190 • LOC 3075 • Part Works For
  
  870040300996 • View Detail • Free Shipping Eligible
  
  $25.95
- $25.95
  
  Qty
- v7456
- Bosch Aquastar 125X Package of Dow Lube - DOWLUBE - Non-returnable
  
  • Loc 3615 • Part Works For
  
  DOWLUBE125X0 • View Detail • Free Shipping Eligible
  
  $7.15
- $7.15
  
  Qty
- v7423
- Bosch Aquastar 125X Pilot Assembly NG or LP - 8718105051 - Non-returnable
  
  • Also Known as Part Number 87181050510 • LOC 3585 • Part Works For
  
  871810505996 • View Detail • Free Shipping Eligible
  
  $32.75
- $32.75
  
  Qty
- v7424
- Bosch Aquastar 125X Pilot Assembly NG or LP - 8708105491 - Non-returnable
  
  • Also known as part number 87081054910 • LOC 3475 • Part Works For
  
  870810549106 • View Detail • Free Shipping Eligible
  
  $41.75
- $41.75
  
  Qty
- v7428
- Bosch Aquastar 125X Pilot Tube Gasket - 8700103173 - Non-returnable
  
  • LOC 3015 • Part Works For
  
  870010317306 • View Detail • Free Shipping Eligible
  
  $3.95
- $3.95
  
  Qty
- v7429
- Bosch Aquastar 125X Electrovalve O-Ring - 8700205120 - Non-returnable
  
  • LOC 3040 • Part Works For
  
  870020512096 • View Detail • Free Shipping Eligible
  
  $4.95
- $4.95
  
  Qty
- v7430
- Bosch Aquastar 125X Pilot Electrovalve - 8708501249 - Non-returnable
  
  • LOC 3540 • Part Works For
  
  870850124906 • View Detail • Free Shipping Eligible
  
  $67.95
- $67.95
  
  Qty
- v7432
- Bosch Aquastar 125X Piezo Electrode and Flame Rod Sensor - 87181070670 - Non-returnable
  
  • Old Part Number was 8708107006 • LOC 3485 • Part Works For
  
  870810700606 • View Detail • Free Shipping Eligible
  
  $23.75
- $23.75
  
  Qty
- v7435
- Bosch Aquastar 125X Overheat Sensor (ECO) - 8707206040 - Non-returnable
  
  • Also known as 87072060400 • LOC 3405 • Part Works For
  
  870720604996 • View Detail • Free Shipping Eligible
  
  $64.75
- $64.75
  
  Qty
- v7439
- Bosch Aquastar 125X Regulator Natural Gas - 8342400000 - Non-returnable
  
  • LOC 3000 • Part Works For
  
  834240000996 • View Detail • Free Shipping Eligible
  
  $67.75
- $67.75
  
  Qty
- v7440
- Bosch Aquastar 125X Regulator Propane Gas - 7738000884 - Non-returnable
  
  • Old number was 8345520000 • LOC 3005 • Part Works For
  
  834552000996 • View Detail • Free Shipping Eligible
  
  $62.75
- $62.75
  
  Qty
- v7447
- Bosch Aquastar 125X Water Valve Selector Screw - 8708500251 - Non-returnable
  
  • LOC 3536 • Part Works For
  
  870850025196 • View Detail • Free Shipping Eligible
  
  $36.95
- $36.95
  
  Qty
- v7450
- Bosch Aquastar 125X Water Valve Slow Ignition Valve - 8708503063 - Non-returnable
  
  • LOC 3555 • Part Works For
  
  870850306991 • View Detail • Free Shipping Eligible
  
  $18.75
- $18.75
  
  Qty
- v7453
- Bosch Aquastar 125X Inlet Outlet Washer - 1/2 Inch - 8710103045 - Non-returnable
  
  • LOC 3570 • Part Works For
  
  871010304506 • View Detail • Free Shipping Eligible
  
  $4.75
- $4.75
  
  Qty
- v7454
- Bosch Aquastar 125X Burner Assembly Washer - 8710103060 - Non-returnable
  
  • LOC 3571 • Part Works For
  
  871010306096 • View Detail • Free Shipping Eligible
  
  $4.95
- $4.95
  
  Qty
- v7455
- Bosch Water Valve rebuild kit 125X - 7738001918 - WVKIT125X - Non-returnable
  
  • Also Includes Parts 8703406244 and 8708503063 • LOC 6225 • LOC 6225 • Part Works For
  
  WVKIT125XBW2 • View Detail • Free Shipping Eligible
  
  $98.75
- $98.75
  
  Qty

Load More