Smart #3 HX21 AC Compressor
New, used, or aftermarket – from sellers across Europe.
Parts availability
Limited availability – hank searches the web for you.
Estimated price range
Widely available Limited Hard to find
Last updated: 02.10.2026, 07:35
AC Compressor for your Smart #3?
Create a parts request and we will automatically search the web for suitable offers. You'll receive the results by e-mail - free of charge.
In addition, sellers on hank can send you offers directly.
Prices from recent listings
| Source | Condition | Price (approx.) | Last seen |
|---|---|---|---|
| Autodoc | New | 160.99 € | 2026-10-02 |
| Autodoc | New | 360.99 € | 2026-10-02 |
| Autodoc | New | 183.99 € | 2026-09-02 |
| Kfzteile | Unknown | 211.25 € | 2026-09-02 |
| Kfzteile | Unknown | 275.28 € | 2026-09-02 |
| Autodoc | Unknown | 310.99 € | 2026-09-02 |
Indicative values only – current prices may vary.
Price comparison: AC Compressor
Current median for the Smart #3 HX21: 243.26 €.
Median across all car models: around 220 €. This model is 15% above that and more expensive than 60% of the models compared.
Median across Smart car models: around 180 €. This model is 30% above that and more expensive than 65% of the models compared.
Compares the medians of the most recent offers found for each model.
Find Smart #3 HX21 parts online
hank's free AI report searches specialized shops for Smart #3 HX21 parts, including partsformercedes-benz.com, Amazon & Mecatechnic.
About this part
The air conditioning compressor on your #3 HX21 pressurises the refrigerant and keeps the whole system working. Warm air despite a full charge, a grinding noise from the belt drive or a magnetic clutch that no longer engages all point to a failure.
Frequently asked questions
What should I check when buying an AC compressor for the Smart #3?
Manufacturer and part number matter, and so does the refrigerant your #3 HX21 uses - R134a and R1234yf need different oils. Compare pulley diameter, rib count and the connector type of the control valve as well.
Does anything else need replacing with the compressor?
If the old compressor broke up internally, swarf is spread through the whole circuit, so the drier and expansion valve go with it and the lines get flushed. Skip the flush and the new compressor swallows the debris and fails again.
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