Sourced from NISSENS, this coolant expansion tank (996402) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Capacity [litre]: Steel, 49 l, Supplementary Article/Supplementary Info: 896, Supplementary Article/Info 2: 287 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit BMW models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 1414701700, 17137785013, 17137800292, 180730 and 9 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.