K&N is the only one that has a 1,000,000-mile warranty and also 50-state CARB certified. I chose it because of those reasons and plus I have a K&N filter on my airplane so I'm biased
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4.2L V6 - M5OD | 16" Dual Efans | 2" Drop Shackles | K&N Series-77 | Port & Polish TB
Bent Frame Mod | Custom Down-Turned Bumper | Accordian-style bed flooring