These kits replace the worn factory air cleaner on the stock 1300cc Samurai motor. They provide better filtration that the stock paper designed filters. These filters trap more dirt particles and give you better air flow all while being easily washed and reused for the life of the vehicle. These filters will save you money in the long run. They fit into the factory original air canister. Even when dirty, our performance filters filter the dirt out better than factory. Kits also available to adapt the stock airbox EMPI to the performance filter.