The spark plug wrench for the Citroën DS is a specialized tool designed to safely and efficiently install or remove spark plugs in this iconic vehicle. Due to the DS's unique engine characteristics, a specialized wrench is required for precise access and fitting. This wrench typically has a length and shape that complement the DS engine, preventing damage and facilitating maintenance. It’s an essential tool for collectors and mechanics working on this classic car, optimizing engine performance and ensuring smooth operation.