The air filter rubber ring for the Citroen DS is a crucial component ensuring that the air filter remains securely and tightly in place. This rubber part prevents unfiltered air from entering the engine by sealing potential gaps. Made from durable rubber resistant to temperature changes and oil vapors, this ring provides reliability and long-lasting service. It guarantees optimal performance of the air filtration system, keeping the engine of the Citroen DS clean and efficient. Essential for maintaining your classic car's air intake system.