This 25 mm nozzle is designed to fit the Weber DCNF carburettor, a dual-choke carburettor with horizontal slides widely used on classic vehicles. It is sold individually, allowing you to replace the faulty part precisely without purchasing a complete kit. As part of a restoration or careful maintenance, replacing a worn or blocked nozzle helps restore original settings and ensure reliable carburettor operation. A new part suited to the Weber DCNF to preserve the mechanics of a classic vehicle in its original condition.