K&N 06+ Civic Si Drop In Air Filter Short ram Intake System It may also be mounted

It may also be mounted off the engine

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Converts to top-feed fuel injectors with 14mm O-rings

specialty fittings and performance accessories

The air filter is placed under the original air box space and above the driver-side wheel well which is designed to pull in cooler outside air and increase horsepower

K&N 06+ Civic Si Drop In Air Filter Short ram Intake System It may also be mountedK&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace