When expansion valve air conditioning performance matters, the NISSENS 999231 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Material: Steel, Refrigerant: Copper, Inlet Diameter 1 [mm]: Polyurethane, Carbon mm, Inlet Diameter 2 [mm]: Fibreglass, Ceramic mm, Connection Diameter 1 [mm]: Bronze, Carbon mm. 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: 06001238, 1212204, 228684, 38497 and 17 more. Matching these numbers confirms a like-for-like replacement with no loss of function. NISSENS is a recognised supplier of automotive replacement 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.

Nissens, founded in 1921 in Horsens, Denmark, is a leading European manufacturer of engine cooling and climate control components. Nissens specialises in radiators, charge air coolers (intercoolers), condensers, compressors, and oil coolers. With products developed and tested to meet OE quality standards, Nissens supplies both the independent aftermarket and original equipment manufacturers. Combining Scandinavian engineering values with over a century of thermal management expertise, Nissens delivers efficient cooling solutions that ensure optimum engine and cabin temperature control.