S&B Filters 01-04 LB7 Duramax Cold Air Intake (Cotton Filter)

Breathe easy. Your engine & warranty are protected. Add power and fun while still protecting your investments. Gigantic and Spectacular. Engineering maximized every square inch of the engine compartment to give you our most feature rich kit yet. ISO 5011 Filtration Testing. A mountain of dust and our 1/2 million dollar lab is how far we've gone to make sure your engine is protected. No, you are not seeing double. Yes, we included two openings to feed insane amounts of air to your engine. It makes use of the stock housing inlet while adding even more cool air with a secondary snorkel pulling air from the fender liner. Just in case the thought of all that extra cold air makes you shiver, a plug is provided for the additional snorkel. Innovative fitment. We wanted to make the fit for this kit as snug and efficient as possible, and the best way to do that was to bolt it directly to the side of the truck. This eliminated the need for the stock mounting rack and allowed access to the most solid mounting point on your truck, the frame. With the mounting rack out of the picture, it freed up extra design space, so we went huge with the air box utilizing every last bit of open engine space. An extremely large filter. All things equal, the more surface area on a filter, the better it will perform. This filter is so big, you may need a hoist. Cleanable or dry filters. You pick. We offer intakes with two types of filters. cotton (cleanable) or dry (disposable). Since you are not sacrificing performance with either choice, the decision comes down to would you rather throw away the filter or clean it.