The TOPRAN 400 360 is a combined lock cylinder and ignition switch unit, crucial for both starting your vehicle's engine and securing it. This part integrates the key mechanism for the ignition with the electrical switch that controls various vehicle functions when the key is turned. It is engineered to meet the specific requirements of compatible vehicle models, ensuring a proper fit and dependable performance. Replacing a worn or faulty lock cylinder and ignition switch can resolve issues such as difficulty starting the engine, the key getting stuck, or electrical components not functioning correctly when the key is turned. This TOPRAN unit offers a direct replacement solution for maintaining the integrity of your vehicle's security and starting systems.