Bosch W 135 K TZ ZT1 spare parts
In brief
Instalpunt supplies 50 original parts for the Bosch W 135 K TZ ZT1, including sensors, gas valves and gas control, ignition and ionisation. Order online.
- 50Spare parts
- 25In stock
- €9.81From
- 12Types
Looking for parts for the Bosch W 135 K TZ ZT1 (instantaneous water heater)? Below are all 50 original parts, grouped by part type. Choose a type to jump straight to the right table.
Quick left to the right part for the Bosch W 135 K TZ ZT1
| Part | From | Delivery |
|---|---|---|
| Ignition part Nefit ignition electrode for e.g. F 1400 87081070020 | €19.95 | In stock |
| Display Bosch hot water knob | €15.95 | In stock |
Prices incl. VAT, taken directly from our checkout. Below is the complete parts list for this model.
Installer or self-employed engineer? Create a business account: prices excl. VAT and invoices in your company name.
- Sensors 1
- Gas valves and gas control 4
- Ignition and ionisation 2
- Burners 2
- Displays and controls 3
- Filters 1
- Valves 3
- Cables and wiring harnesses 2
- Gaskets and seals 10
- Pipes, tubes and hoses 2
- Casing and panels 5
- Fixing material 3
- Other parts 12
Sensors for the Bosch W 135 K TZ ZT1 (1) all Bosch sensors →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Nefit maximum protection | 8185018 Mfr. no. 8738717111 | €33.95 | In stock | View & order |
Gas valves and gas control for the Bosch W 135 K TZ ZT1 (4) all Bosch gas valves and gas control →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Bosch pilot injector blue 10 pcs | 8184182 Mfr. no. 87082001400 | €49.95 | In stock | View & order |
| Nefit injector natural gas 10 pcs | 8184190 Mfr. no. 87082021440 | €25.95 | Made-to-order item | View & order |
| Bosch venturi for W135 TZ-1 | 8180680 Mfr. no. 87082052600 | €29.95 | Made-to-order item | View & order |
| Bosch venturi W135 T2-1 | 8185024 Mfr. no. 87082052000 | €27.95 | Made-to-order item | View & order |
Ignition and ionisation for the Bosch W 135 K TZ ZT1 (2) all Bosch ignition and ionisation →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Nefit ignition electrode for e.g. F 1400 87081070020 | 8035001 Mfr. no. 87081070020 | €19.95 | In stock | View & order |
| Nefit piezo igniter | 8185017 Mfr. no. 87481080230 | €22.95 | In stock | View & order |
Burners for the Bosch W 135 K TZ ZT1 (2) all Bosch burners →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Nefit burner for e.g. W 135 natural gas 87081206580 | 8180641 Mfr. no. 87081206580 | €231.95 | Made-to-order item | View & order |
| Nefit pilot burner propane | 8185040 Mfr. no. 87081053170 | €47.95 | Made-to-order item | View & order |
Displays and controls for the Bosch W 135 K TZ ZT1 (3) all Bosch displays and controls →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Bosch hot water knob | 8185104 Mfr. no. 87020001020 | €15.95 | In stock | View & order |
| Bosch cold water knob | 8185105 Mfr. no. 87020001030 | €15.95 | In stock | View & order |
| Bosch temperature selector knob grey | 8180310 Mfr. no. 87020001040 | €23.95 | Made-to-order item | View & order |
Filters for the Bosch W 135 K TZ ZT1 (1) all Bosch filters →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Nefit water strainer 10 pcs | 8036118 Mfr. no. 87005070010 | €41.95 | Made-to-order item | View & order |
Valves for the Bosch W 135 K TZ ZT1 (3) all Bosch valves →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Bosch slow ignition valve W135/WR250/32 | 8180730 Mfr. no. 87085030630 | €18.95 | In stock | View & order |
| Bosch water flow regulator W135 new version | 8180530 Mfr. no. 87074020180 | €49.95 | In stock | View & order |
| Bosch pressure relief valve/drain screw | 8189688 Mfr. no. 87034061530 | €21.95 | Made-to-order item | View & order |
Cables and wiring harnesses for the Bosch W 135 K TZ ZT1 (2) all Bosch cables and wiring harnesses →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Nefit high-voltage lead for e.g. F 1455 87044010230 | 8185093 Mfr. no. 87044010230 | €20.95 | In stock | View & order |
| Bosch ionisation cable for e.g. W 135 natural gas 87144017590 | 8184221 Mfr. no. 87144017590 | €21.95 | Made-to-order item | View & order |
Gaskets and seals for the Bosch W 135 K TZ ZT1 (10) all Bosch gaskets and seals →
Pipes, tubes and hoses for the Bosch W 135 K TZ ZT1 (2) all Bosch pipes, tubes and hoses →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Nefit pilot line 4mm | 8181449 Mfr. no. 87107071660 | €44.95 | In stock | View & order |
| Bosch reducer W135 | 8184061 Mfr. no. 87033050010 | €21.95 | Made-to-order item | View & order |
Casing and panels for the Bosch W 135 K TZ ZT1 (5) all Bosch casing and panels →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Nefit pilot cap 10 pcs | 8184181 Mfr. no. 87013090390 | €33.95 | In stock | View & order |
| Bosch water housing cover | 8181395 Mfr. no. 87055001450 | €49.95 | In stock | View & order |
| Bosch water housing top section | 8189298 Mfr. no. 87055001460 | €49.95 | In stock | View & order |
| Bosch guide plate | 8181707 Mfr. no. 87010001430 | €56.95 | Made-to-order item | View & order |
| Bosch casing W125/135 | 8184164 Mfr. no. 87054014650 | €127.95 | Made-to-order item | View & order |
Fixing material for the Bosch W 135 K TZ ZT1 (3) all Bosch fixing material →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Bosch temperature selector screw W135TZ | 8180710 Mfr. no. 87085002090 | €24.95 | In stock | View & order |
| Nefit screw 87034010510, 10 pcs | 8184119 Mfr. no. 87034010510 | €22.95 | Made-to-order item | View & order |
| Bosch clamping screw | 8185053 Mfr. no. 87034010460 | €23.95 | Made-to-order item | View & order |
Other parts for the Bosch W 135 K TZ ZT1 (12)
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Nefit tap seal 10 pcs | 8180320 Mfr. no. 87032040030 | €34.95 | In stock | View & order |
| Nefit magnet insert for e.g. W 135 natural gas 87072010120 | 8180420 Mfr. no. 87072010120 | €50.95 | In stock | View & order |
| Bosch tap spindle | 8180690 Mfr. no. 87085000160 | €24.95 | In stock | View & order |
| Nefit backflow protection for e.g. WR 350-1 8738718428 | 8184127 Mfr. no. 8738718428 | €112.95 | In stock | View & order |
| Bosch water section for e.g. W 135 natural gas 87070023510 | 8180398 Mfr. no. 87070023510 | €234.95 | In stock | View & order |
| Bosch make-up spindle | 8185098 Mfr. no. 87085002870 | €37.95 | In stock | View & order |
| Nefit overpressure pin | 8180180 Mfr. no. 87005030130 | €23.95 | Made-to-order item | View & order |
| Nefit pilot nozzle red 10 pcs | 8036088 Mfr. no. 87082002780 | €56.95 | Made-to-order item | View & order |
| Bosch threaded piece for e.g. W 135 natural gas 87033051490 | 8184062 Mfr. no. 87033051490 | €31.95 | Made-to-order item | View & order |
| Bosch gas section W125 butane | 8189463 Mfr. no. 87070110900 | €210.95 | Made-to-order item | View & order |
| Bosch threaded bush | 8180330 Mfr. no. 87034061070 | €23.95 | Made-to-order item | View & order |
| Nefit draught diverter W125 | 8185043 Mfr. no. 87055053160 | €120.95 | Made-to-order item | View & order |
Fault code on your Bosch W 135 K TZ ZT1? This is the part type involved
Common Bosch fault codes and the part type that is usually the cause; the parts for this model are listed above.
| Code | What is going on | Part type |
|---|---|---|
| 2P564 | Temperature sensor temperature rising too fast (> 70 K/min). | Sensors |
| 8C373 | The burner thermostat has measured an excessive temperature more often than permitted. | Burners |
| 8C374 | Insufficient ionisation current has been measured during firing more often than permitted. | Ignition and ionisation |
| 9A235 | The KIM is too new for the burner control unit. | Burners |
| 9U233 | The burner control unit or the KIM is faulty. | Burners |
| 227 V | No flame signal after ignition | Ignition and ionisation |
For guidance only: the same code can have a different cause depending on the situation.
Other Bosch instantaneous water heaters
- Bosch HR 8000S (WTD27 AME) 73
- Bosch Kelvin WR 11H (GWH 11) 37
- Bosch Kelvin WR 11P (GWH 11P) 33
- Bosch Kelvin WR 14H (GWH 14) 28
- Bosch Kelvin WR 14P (GWH 14P) 25
- Bosch Kelvin WR 18H (GWH 18) 30
- Bosch Kelvin WR 18P (GWH 18P) 26
- Bosch WR 200-1 AM P 58
- Bosch WR 200-5 AM 98
- Bosch WR 250-1 AM0 E 19
- Bosch WR 250-1 AM0 P 58
- Bosch WR 250-5 AM 46
Frequently asked questions
Which parts are available for the Bosch W 135 K TZ ZT1?
The catalogue lists 50 original parts for the Bosch W 135 K TZ ZT1, including sensors, gas valves and gas control, ignition and ionisation, burners. All parts are listed above, grouped by type, with part number and price.
How much does a sensor for the Bosch W 135 K TZ ZT1 cost?
The sensors for this model cost €32.67 incl. VAT. Check the table "Sensors" above for the right part number.
Are the parts for the Bosch W 135 K TZ ZT1 in stock?
25 of the 50 parts are in stock; shipping to EU countries from €12.95 (€16.95 for more distant countries), usually 3–5 working days. Parts marked "Made-to-order item" are ordered specially for you; the delivery time is shown on the product page.
How do I know which part I need for the Bosch W 135 K TZ ZT1?
Search for the part by part number or use the parts list of the Bosch W 135 K TZ ZT1. Is your appliance showing a fault code? The fault code table shows the matching part type.
Are these original Bosch parts?
Yes. All 50 parts in this list are original manufacturer parts for the Bosch W 135 K TZ ZT1, supplied through the official technical wholesale channel and with the correct part number.
How much do parts for the Bosch W 135 K TZ ZT1 cost?
Parts for the Bosch W 135 K TZ ZT1 range from €9.81 to €312.33 incl. VAT. The exact price of each part is shown in the tables above.
Can I return a part?
As a consumer you have a 14-day right of withdrawal. You may unpack and inspect the part; do not install or connect it. For a part that has been installed, connected or damaged we deduct the diminished value, up to the full price for circuit boards.