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Nefit air vent set 120 litre hot water cylinder 40kW 28mm
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Nefit air vent set 120 litre hot water cylinder 40kW 28mm 75858

€ 97.14 incl. VAT

Original spare part Buderus (Bosch). Type: Air vent kit, 4083. Application: Hot water cylinder / Boiler toebehoren. Supplier code: 75858.

SKU: 8025710 Categories: , Brand:

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?
ApplicationHot water cylinder
Series / modelBoiler toebehoren and 3 other models
Buderus (Bosch) number75858
Article number8025710
Not sure? Search by article or manufacturer number or check with the manufacturer or your installer.
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Nefit air vent set 120 litre hot water cylinder 40kW 28mm: original Nefit spare part, type: Air vent kit. Application: Hot water cylinder (Boiler toebehoren). Manufacturer number: 75858; Instalpunt article number: 8025710.

According to the Nefit parts lists, this part fits 4 models, including Buderus (Bosch) Boiler toebehoren, Nefit (Bosch) Boiler toebehoren and Nefit (Bosch) CV boiler 120L 40kW exclusief 3-wegklep. 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.

Product information: Nefit air vent set 120 litre hot water cylinder 40kW 28mm 75858

BrandBuderus (Bosch) spare parts
Buderus (Bosch) manufacturer number75858
Instalpunt article number8025710
EAN4051516155254
Part typeAir vent kit
ApplicationHot water cylinder
Suitable for4 Buderus (Bosch) models (see list)
DeliveryIn stock, delivery in 3–5 working days
Price€ 97,14 incl. VAT
OriginSupplied through the official technical wholesale channel, under Buderus (Bosch) number 75858

Fits 4 Buderus (Bosch) models

The part Nefit air vent set 120 litre hot water cylinder 40kW 28mm 75858 is in the official parts list of these Buderus (Bosch) appliances. Click a model for the complete parts list and exploded view.

Buderus (Bosch) Hot water cylinder (4)

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.

Position on the parts diagram

This spare part is shown as position 2 on the parts drawing. Open the drawing for the appliance and click the number to check that you have the right spare part.

Frequently asked questions about this item

Does the Nefit air vent set 120 litre hot water cylinder 40kW 28mm 75858 fit my appliance?
This part is in the parts list of 3 Buderus (Bosch) models, namely the Boiler toebehoren, CV boiler 120L 40kW exclusief 3-wegklep, CV boiler 120L 40kW inclusief 3-wegklep. The model type is on the rating plate of your appliance. If in doubt, ask the manufacturer or your installer.
What is the delivery time for the Nefit air vent set 120 litre hot water cylinder 40kW 28mm 75858?
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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