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Mark leaksafe thermostat
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Mark leaksafe thermostat 3101655

€ 107.05 incl. VAT

Original spare part Mark. Type: Thermostat. Application: Warm air heating / GNSD 22. Supplier code: 3101655.

SKU: 8881144 Categories: ,

Price and stock checked on 20 October 2026.

✓ In stock — delivery usually within 3–5 working days
EU delivery from € 17.95 · Shipping & payment

Price incl. VAT. Any delivery costs are calculated in the basket — see shipping & delivery.

Does this fit my appliance?
ApplicationWarm air heating
Series / modelGNSD 65 and 13 other models
Mark number3101655
Article number8881144
Not sure? Search by article or manufacturer number or check with the manufacturer or your installer.
All spare parts for Mark GNSD 65 →
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Mark leaksafe thermostat: original Mark spare part, type: Thermostat. Application: Warm air heating (GNSD 22). Manufacturer number: 3101655; Instalpunt article number: 8881144.

According to the Mark parts lists, this part fits 14 models, including Mark GNSD 22, Mark GNSD 25 and Mark GNSD 27. The full list is under “Fits”.

In stock: order before 14:00 and it ships the same working day; delivery within the EU usually takes 3–5 working days.

Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer. Work on gas-carrying parts must be carried out by a qualified gas engineer.

Product information: Mark leaksafe thermostat 3101655

BrandMark spare parts
Mark manufacturer number3101655
Instalpunt article number8881144
EAN8720246310030
Part typeThermostat (All Mark thermostats and controls · thermostats and controls of all brands)
ApplicationWarm air heating
Suitable for14 Mark models (see list)
DeliveryIn stock, delivery in 3–5 working days
Price€ 107,05 incl. VAT
OriginSupplied through the official technical wholesale channel, under Mark number 3101655

Also known as: maximaalthermostaat, ketelthermostaat.

Fits 14 Mark models

The part Mark leaksafe thermostat 3101655 is in the official parts list of these Mark appliances. Click a model for the complete parts list.

Mark Warm air heating (14)

Check the rating plate of your appliance. Not sure whether this part fits? Check with the manufacturer or your installer; with the correct manufacturer number you can order it here directly.

Does this fit my appliance?

Enter your appliance type, for example as shown on the rating plate. You will see straight away whether the Mark leaksafe thermostat 3101655 is in the parts list of that model.

Not found? Check the rating plate of your appliance or search by article number. If in doubt, just email info@instalpunt.nl.

Frequently asked questions about this item

Does the Mark leaksafe thermostat 3101655 fit my appliance?
This part is in the parts list of 14 Mark models, including the GNSD 22, GNSD 25, GNSD 27, GNSD 30. The model type is on the rating plate of your appliance. Use the “Does this fit my appliance?” search box on this page to check your model. If in doubt, ask the manufacturer or your installer.
What is the delivery time for the Mark leaksafe thermostat 3101655?
This item is in stock. Ordered before 14:00, it ships the same working day and usually arrives within three to five working days.
Can I return this item?
Yes, unused and in the original packaging within 14 days of receipt. Unpacked or fitted items and electronics such as PCBs cannot be returned. How to register a return is explained on returns.
What does shipping cost?
Shipping costs € 17.95 to Austria, Denmark, Italy, Spain and Sweden and € 24.95 to other EU countries. In-stock items ordered before 2 pm are dispatched the same working day; delivery usually takes 3–5 working days. Details: Shipping.
I have a fault code, which part do I need?
Look up the code in the fault code finder: per brand and appliance it shows what the code means and which part goes with it. If the code is listed with this part, the part belongs to that fault.

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