Banks 42135-D Ram-Air Cold Air Intake System with Dry Filter | 2004-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Banks Ram-Air Superiority. Flowbench-developed, dyno-proven cold-air intake adds up to +39 hp/+69 lb-ft (with tuner); improves flow 57%, increases power and MPG; reduces exhaust gas temps and smoke. Passes the test. Again and again. Others build and ship without testing. Not Banks. Our Ram-Air Intakes start out as CAD software prototypes and are put through flow simulations. The design is refined until the simulation shows optimal performance. Then a hardware prototype is made and the design is validated on a flowbench. After that comes dyno testing and on-vehicle testing. It takes a superior design to pass all those tests! Filter on a stick: a joke that's not funny.

A filter on a stick is a bad joke. It's wide-open to hot, power-robbing underhood engine air. Ram-Air houses a giant limited lifetime filter in an enclosed cold-air box, which inhales cool, dense outside air - more than Banks' competitors and up to 57% more than stock - for more power (up to +39 hp/+69 lb-ft, with tuner). More mileage, lower EGTs and less smoke, too. And it's designed to not cause fault or error codes. Bellows, too? Very exclusive. Banks Ram-Air is the only aftermarket intake with bellows. This accommodates engine movement and prevents component damage for longer service life.

The optional high-flow Super-Scoop is another Banks exclusive! Best gains measured at the rear wheels. Available separately: new Super-Scoop optimizes the Ram-Air Intake's efficiency and power!