Standard KN replacement panel filter for '15+ Mustang GT airbox.

Makes a great upgrade to improve flow.  Use in conjunction with smaller pulleys on the Loki Level 1 Supercharger Kit.  Loki ships with a 3.5" pulley, use this when pulley down to 3.3" and smaller.  

In conjunction with a smaller pulley see gains of 40-80rwhp with this filter on the Loki Level 1 Supercharger Kit.