The Bougie Eyquem 705 S is a premium spark plug specifically designed for classic Citroën models such as the DS, ID, and HY. This spark plug ensures optimal combustion, enhancing engine performance. Crafted with high-quality materials, it guarantees durability and reliability, essential for older vehicles. Precisely engineered, this spark plug significantly impacts the efficiency and driving comfort of classic Citroëns. It is an ideal choice for owners seeking to maintain authenticity and performance in their vintage cars. Installation is straightforward, offering noticeable improvements in engine operation to end users.