When gas spring bonnet performance matters, the STABILUS 9831NN delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Length [mm]: 540 mm, Stroke [mm]: 223 mm, Extention Force [N]: 215 N. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with ALPINA, BMW vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 2019753, 32372, 4333MB, 51 23 8 238 570 and 4 more. Matching these numbers confirms a like-for-like replacement with no loss of function. STABILUS is a recognised supplier of automotive suspension components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.

Stabilus, founded in 1934 in Koblenz, Germany, is the world's leading manufacturer of gas springs, dampers, and electromechanical drives. Stabilus specialises in gas struts for bonnets, tailgates, boot lids, and interior hatches across all vehicle types. As an OE supplier to virtually every major car manufacturer worldwide, Stabilus gas springs are found in millions of vehicles. With precision German engineering and consistent quality, Stabilus products ensure smooth, reliable opening and closing of vehicle panels throughout their full service life.