Heater control valve VW Golf, Audi A3, Skoda Octavia – fitment and part numbers
Heater Control Valve VW Golf, Audi A3, Skoda Octavia - Fitment and Part Numbers
Before ordering, compare your vehicle, mounting position, and part designations. Below you'll find key details for this specific offer, along with product photos.
The most important information about this offer
Car compatibility
The reference point is the exact model, engine version, year and data from the product name.
Numbers and markings
4H0121671D, 4H0121671B, 4H0121671G, 5Q0906457J
Comparison before assembly
Set of the number on the old part, connectors, mountings and shape of the element with photos of this offer.
How to verify this part before ordering
- make, model, generation and year of the car
- engine/power, if indicated in the offer
- OE/OEM number or old part designation
- side and mounting position, if applicable
Specific product data
- Product data numbers/markings: 4H0121671D, 4H0121671B, 4H0121671G, 5Q0906457J
See the product up close
Frequently asked questions
Is the car model alone enough to make the selection?
Not always. There can be different part versions within a single model, so it's worth comparing the year, engine, markings, and photos.
Where to check the OE/OEM number?
It's most often found on the removed part, label, or housing. If this listing lists numbers, compare them to your component.
What to do if a part looks different?
Don't order based solely on a similar name. Compare the mounting, connectors, shape, and markings, and if in doubt, verify compatibility before purchasing.
Check the correct variant
Go to the product card to see the current price, availability and options.




