84mm ID Neck - Race Pod Air FilterProduct Details RP 106 Race Pod Air Filter Universal Heavily used in F3 racing cars. Each filter has a internal stainless steel cage and a flexible, clampable neck. All RP filters have a foam top, which ensures maximum air availability to your engine. Filters come with clamp and ready oiled. The filter is specially strengthened using a stainless steel internal mesh, which we have developed & used in European and world touring cars! With its large