hks shf replacement filter s-size (3row) 70017-ak001

3 layered filter divides, collects intake air and smoothes air flow. It enables quick response that is required for a sport filter. Newly developed Non-woven fabric is the first layer that collects large dust. Second layer polyurethane filter collects small dust. Thus the new filter has longer life. Joining of each layer was changed from flame lamination to net type joining that does not affect intake air flow. Dry 3 layer structure enables lower resistance.