Vaillant MAG 9/1 OZ Open spare parts
In brief
Instalpunt supplies 74 original parts for the Vaillant MAG 9/1 OZ Open, including gas valves and gas control, ignition and ionisation, thermostats and controls. Order online.
- 74Spare parts
- 25In stock
- €5.89From
- 10Types
Looking for parts for the Vaillant MAG 9/1 OZ Open (instantaneous water heater)? Below are all 74 original parts, grouped by part type. Choose a type to jump straight to the right table.
Quick left to the right part for the Vaillant MAG 9/1 OZ Open
| Part | From | Delivery |
|---|---|---|
| Ignition part Vaillant ignition electrode MAG9/1XZ | €23.95 | In stock |
| Display Vaillant knob MAG9/2XZ | €16.95 | 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.
- Gas valves and gas control 3
- Ignition and ionisation 3
- Thermostats and controls 1
- Burners 4
- Displays and controls 5
- Valves 4
- Gaskets and seals 12
- Pipes, tubes and hoses 4
- Casing and panels 5
- Fixing material 19
- Other parts 14
Gas valves and gas control for the Vaillant MAG 9/1 OZ Open (3) all Vaillant gas valves and gas control →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant Ermeto gas connection MAG135/9-2b right-hand thread 080032 | 8050985 Mfr. no. 080032 | €143.95 | Made-to-order item | View & order |
| Vaillant gas tap angled propane MAG 9/2 B XZ Care | 8050066 Mfr. no. 0020046425 | €67.95 | Made-to-order item | View & order |
| Vaillant venturi 212 MAG135/1-12 | 8050353 Mfr. no. 012806 | €24.95 | Made-to-order item | View & order |
Ignition and ionisation for the Vaillant MAG 9/1 OZ Open (3) all Vaillant ignition and ionisation →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant ignition electrode straight 9/1 oz | 8058038 Mfr. no. 090725 | €33.95 | Made-to-order item | View & order |
| Vaillant ignition electrode MAG9/1XZ | 8056576 Mfr. no. 090715 | €23.95 | In stock | View & order |
| Vaillant piezo ignition MAG 9/2XZ-DGXZ-B 19/2 XZ | 8055260 Mfr. no. 091081 | €28.95 | Made-to-order item | View & order |
Thermostats and controls for the Vaillant MAG 9/1 OZ Open (1) all Vaillant thermostats and controls →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant thermocouple temperature limiter 140° MAG 9/1 OZ-DG | 8054986 Mfr. no. 101193 | €70.95 | In stock | View & order |
Burners for the Vaillant MAG 9/1 OZ Open (4) all Vaillant burners →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant pilot burner MAG9/1OZ-DG | 8056486 Mfr. no. 0020147521 | €35.95 | In stock | View & order |
| Vaillant pilot injector MAG 9/1OZ-DG | 8050607 Mfr. no. 042897 | €98.95 | Made-to-order item | View & order |
| Vaillant combustion chamber 042022 | 8050512 Mfr. no. 042022 | €87.95 | Made-to-order item | View & order |
| Vaillant burner rail for e.g. MAG 9/1 OZ Open 126726 | 8053646 Mfr. no. 126726 | €92.95 | Made-to-order item | View & order |
Displays and controls for the Vaillant MAG 9/1 OZ Open (5) all Vaillant displays and controls →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant cold and hot water knob MAG9/2XZ-DG | 8054991 Mfr. no. 012009 | €26.45 | In stock | View & order |
| Vaillant knob MAG9/2XZ | 8055770 Mfr. no. 114276 | €16.95 | In stock | View & order |
| Vaillant knob MAG9/2XZ-DGXZ-B | 8055800 Mfr. no. 114280 | €18.95 | In stock | View & order |
| Vaillant control knob MAG9/2XZ-DGXZ-B | 8058170 Mfr. no. 125138 | €22.95 | Made-to-order item | View & order |
| Vaillant knob MAG9/2XZ-DGXZ-B 19/2XZ | 8055780 Mfr. no. 114281 | €23.95 | Made-to-order item | View & order |
Valves for the Vaillant MAG 9/1 OZ Open (4) all Vaillant valves →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant water flow regulator set | 8051630 Mfr. no. 144016 | €19.95 | In stock | View & order |
| Vaillant water stop valve MAG9/1/2XZ-DGXZ-B | 8055440 Mfr. no. 080978 | €136.95 | Made-to-order item | View & order |
| Vaillant gas stop valve angled MAG135/11 A25 082777 | 8054186 Mfr. no. 082777 | €112.95 | Made-to-order item | View & order |
| Vaillant gas stop valve straight MAG135/11 A25 | 8054185 Mfr. no. 082776 | €103.95 | Made-to-order item | View & order |
Gaskets and seals for the Vaillant MAG 9/1 OZ Open (12) all Vaillant gaskets and seals →
Pipes, tubes and hoses for the Vaillant MAG 9/1 OZ Open (4) all Vaillant pipes, tubes and hoses →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant pilot line MAG9/1+2XZ-DGXZ-B | 8056583 Mfr. no. 023902 | €22.95 | In stock | View & order |
| Vaillant air intake pipe MAG9/1 | 8057093 Mfr. no. 093968 | €56.95 | Made-to-order item | View & order |
| Vaillant reducer MAG 135/12 b 9/2 b | 8055872 Mfr. no. 088421 | €41.95 | Made-to-order item | View & order |
| Vaillant water section union nut MAG135/7,71/11/12 | 8050098 Mfr. no. 010144 | €25.95 | Made-to-order item | View & order |
Casing and panels for the Vaillant MAG 9/1 OZ Open (5) all Vaillant casing and panels →
| Part | Item no. / mfr. no. | Price | Stock | |
|---|---|---|---|---|
| Vaillant top section | 8050440 Mfr. no. 013034 | €78.95 | In stock | View & order |
| Vaillant cover plate MAG9/2XZ-DGXZ-B | 8055790 Mfr. no. 077931 | €41.95 | Made-to-order item | View & order |
| Vaillant rear wall MAG9/2XZ-DGXZ-B | 8057688 Mfr. no. 074411 | €31.95 | Made-to-order item | View & order |
| Vaillant flue cap MAG9/1 OZ-DG | 8055470 Mfr. no. 077109 | €28.95 | Made-to-order item | View & order |
| Vaillant casing MAG9/1OZ | 8055101 Mfr. no. 072987 | €101.95 | Made-to-order item | View & order |
Fixing material for the Vaillant MAG 9/1 OZ Open (19) all Vaillant fixing material →
Other parts for the Vaillant MAG 9/1 OZ Open (14)
Fault code on your Vaillant MAG 9/1 OZ Open? This is the part type involved
Common Vaillant 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 |
|---|---|---|
| F.01 | Ignition fault (no flame detection), no gas / gas tap closed, no ignition | Ignition and ionisation |
| F.105 | Gas valve offset in D.052 set incorrectly | Gas valves and gas control |
| F.25 | Break in the wiring harness of the burner, fan and gas valve | Gas valves and gas control |
| F.26 | Gas valve stepper motor current implausible | Gas valves and gas control |
| F.27 | Incorrect ionisation measurement | Ignition and ionisation |
| F.27 | Ionisation signal with gas valves closed | Gas valves and gas control |
For guidance only: the same code can have a different cause depending on the situation.
Other Vaillant instantaneous water heaters
- Vaillant MAG 125/11 OZ Open 50
- Vaillant MAG 11, 12 Open Propane 50
- Vaillant MAG 11-0/0 XZ Open 56
- Vaillant MAG 135/11 O Open 48
- Vaillant MAG 135/11 XZ Open 50
- Vaillant MAG 135/12 XZ Open 50
- Vaillant MAG 135/7 TTB Open 48
- Vaillant MAG 135/71 Open 45
- Vaillant MAG 135/71 SO17 Open 47
- Vaillant MAG 135/71 TTB Open 48
- Vaillant MAG 14-0/0 GX Open 62
- Vaillant MAG 14-0/0 XI Open 63
Frequently asked questions
Which parts are available for the Vaillant MAG 9/1 OZ Open?
The catalogue lists 74 original parts for the Vaillant MAG 9/1 OZ Open, including gas valves and gas control, ignition and ionisation, thermostats and controls, burners. All parts are listed above, grouped by type, with part number and price.
How much does a gas valve for the Vaillant MAG 9/1 OZ Open cost?
The gas valves and gas control for this model cost between €11.11 and €160.74 incl. VAT. Check the table "Gas valves and gas control" above for the right part number.
Are the parts for the Vaillant MAG 9/1 OZ Open in stock?
25 of the 74 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 Vaillant MAG 9/1 OZ Open?
Search for the part by part number or use the parts list of the Vaillant MAG 9/1 OZ Open. Is your appliance showing a fault code? The fault code table shows the matching part type.
Are these original Vaillant parts?
Yes. All 74 parts in this list are original manufacturer parts for the Vaillant MAG 9/1 OZ Open, supplied through the official technical wholesale channel and with the correct part number.
How much do parts for the Vaillant MAG 9/1 OZ Open cost?
Parts for the Vaillant MAG 9/1 OZ Open range from €5.89 to €287.50 incl. VAT. The exact price of each part is shown in the tables above.
Can I return a part?
You have a 14-day right of withdrawal. Return unused parts, in their original packaging where possible; details are in our returns conditions.