K&N Air Filters with 4" Inlet

K&N: the world's biggest name in aftermarket air filters.

Like all K&N filters, this filter need never be replaced--they're washable! As they get dirty from use, they can simply be cleaned, re-oiled and re-used (using one of K&N's filter service/recharger kits).

Take your pick! Use one of these if you're running an aftermarket intake with a 4" inlet.

DSMers TAKE NOTE: For those attaching a filter directly to an FP cast aluminum intake, any of these filters can be used. However, it's best to use as long as filter as is practical (the 9"er in the drop-down below, we feel is perfect) as short filters tend to deform slightly when clamped to the oval end of the intake.

Choose from drop-down below: