The K&N Typhoon cold air intake for the 2009 Toyota Corolla L4-1.8L uses a mandrel-bent aluminum intake tube mated to a washable, reusable High-Flow air filter with oiled cotton media. K&N states this oversized conical filter can allow up to 100,000 miles between services under normal highway driving, and many systems include a heat shield or airbox. Installation is typically under 90 minutes; check CARB status where applicable.
K&N 09 Toyota Corolla L4-1.8L Typhoon Short Ram Intake