The K&N 77-3076KTK is a cold-air intake kit built around a mandrel-bent aluminum tube and a cotton-gauze filter. It is made for the 6.0L V8 in 2500HD and 3500HD Chevrolet Silverado and GMC Sierra trucks, where it takes the place of the factory air filter and intake housing. The manufacturer says the design balances high airflow with high filtration efficiency, so the engine gets more air without losing protection from road debris.
Against the stock setup, the manufacturer lists an estimated gain of 10.23 HP at 5033 RPM and 10.1 lb-ft of torque, and it presents the power increase as guaranteed. Those are estimates, so treat them as the manufacturer's projection rather than a bench-verified result. The filter is listed by the manufacturer under part number RU-1042XD, which is useful when you plan service. Shoppers searching for a 2011 2012 Silverado 2500HD 6.0 cold air intake or a GMC Sierra 3500HD 6.0 intake kit will find this part matches those applications.
The manufacturer's product listing shows 2011-2013 for these trucks, while the manufacturer's blog about the system names 2011 and 2012 models. Details vary, so confirm your exact model year and engine with the manufacturer before ordering.
The manufacturer states the install usually takes under 90 minutes, depending on the installer's skill level. Its instructions include pictures of each component and engine bay area as parts are removed and installed.
The manufacturer lists five stainless steel clamps, two couplers, and the red cotton-gauze high-flow filter, identified as RU-1042XD. The kit also includes a custom heat shield and lid that installs in the former airbox space.
The manufacturer describes this as a simple bolt-on swap that replaces the stock intake setup, and it says most installers finish in under 90 minutes. Step-by-step instructions with photos guide you through removing the factory parts and fitting the new tube, heat shield, and filter. Confirm the fit of the tube and couplers against the manufacturer's instructions before tightening the clamps.
