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Orders Above £25 free Delivery
Quality made brands
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Search by registration number
VIN number / Chasis number
| Fitting position |
|
| Outer diameter (mm) |
|
| Thickness (mm) |
|
| Supplementary article/supplementary info | with piston |
| Weight (kg) | 6.3 |
| External thread size |
|
| Rolling piston material | steel |
Upgrade or maintain your vehicle with the high-quality FEBI BILSTEIN Air Spring Bag Bellow, air suspension — part number 39992, available now at A-Z Halifax.
This product has been carefully selected for its reliability, performance, and compatibility with a wide range of vehicles. Whether you're working on routine maintenance or a major repair, the FEBI BILSTEIN Air Spring Bag offers excellent value and dependable performance you can trust.
At A-Z Halifax, we stock thousands of car parts and accessories to make your repair job easier and more efficient. Our experienced team is always available to help ensure you’re choosing the right part for your needs.
| Manufacturer | Productnumber |
| mercedes-benz | 942 320 45 21 , 9423204521 |
| mercedes-benz | 974 320 01 17 , 9743200117 |
| mercedes-benz | A942 320 45 21 , A9423204521 |
| mercedes-benz | A974 320 01 17 , A9743200117 |
| Usage numbers |
| AUGER AU 344786-K01 |
| CASALS B2761 |
| CONTINENTAL CTAM 4786NP21 |
| CONTITECH AIR SPRING 4786 N P21 |
| DT Spare Parts 4.81033 |
| Magnum Technology 5002-03-0227P |
| Montcada 0293925 |
| PE Automotive 084.204-72A |
| SABO SA 520376C |
| SEM LASTIK 72.4786.C21 |
| ST-TEMPLIN 04.010.6100.240 |
| STELLOX 84-00228-SX |
| Manufacturer | Model | Version | Engine code | Construction type | Construction start | Construction end | Pk | Power kw |
 mercedes-benz |
You can enter your Vehicle Registration Number on our homepage or manually select your vehicle details. We will then filter the parts that match your vehicle. Always double-check the Product Properties section to confirm correct fitment.
Yes! We’re constantly expanding our product range and catalog. If you can’t find the part you’re looking for, please contact us. We work with several manufacturers and may be able to source the part for you.
Many product pages include a Fitment Details tab with additional information. If you still have questions, feel free to use our message service — we’re happy to help.
Parts do not come with additional items like fitting kits or gaskets unless it is clearly specified in the Part Details section of the product page.
Brake Discs: Most standard brake discs are priced individually, but for safety reasons, they must be purchased in pairs. When required, we will automatically set the quantity to 2 in your basket.
Brake Pads: These are sold as a set (either front or rear), so one box is enough for two discs.
The Compatibility Table can be found on each product page, usually below the main product description. Look for a tab or heading labeled Compatibility.
Orders Above £25 free Delivery
Quality made brands
Great Deals on CarParts
Easy 30 Day Returns
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