Blitz SUS Panel Air Filter SF-48B Subaru Models (inc. 2008-2015 Subaru WRX / 2008-2015 STI)
The Blitz factory replacement Panel Filters were inspired from the SUS Power Core Type Stainless design on the stock replacement type filter. It features a filtering paper surface with stainless steel mesh for durability and strength. Due to its double layer paper filter, overall filtering is improved without sacrificing suction efficiency. The special paper type filter decreases suction resistance for better engine response compared to the stock viscous type filter. The Blitz panel filters are a dry air filter, and should not be oiled when cleaned.