Review on 🚀 K&N Cold Air Intake Kit: High Performance, Increase Horsepower: 50-State Legal: Compatible with 2004-2005 CHEVROLET/GMC (Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, Sierra 3500) - Model: 57-3047 by Dustin Ferguson

Installed in 2005 Silverado 2500HD Duramax. It took 1 hour from opening the hood to closing it. Pretty easy replacement. A few brackets and a few screws for the most part. Benefits: Guaranteed power increase of 20 hp. Slight increase in fuel consumption. Torx wrench for moving MASCons: the list of tools needed in the instructions is not entirely accurate, I had to grab a few extra bits from the toolbox. a little blurry. The attachment point of the pipe bracket to the engine can be a little awkward. The prior art instructions don't fully tighten the bolts on the sign posts for initial installation, but once the top bolts are in place it's almost impossible to get the tool from the back. "Overall satisfied with purchase and product.