The Generation II FIPK® is K&N's ultimate performance product, designed to increase power by as much as 10%. Most FIPK's are street legal in all 50 US states and come with a 10 Year/ Million Mile Limited Warranty. K&N intake systems replace your vehicle's restrictive factory air filter and air intake housing. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your vehicle's engine to inhale a larger volume of air than the OEM air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The filters on these kits are washable and reusable. Fits: Chevrolet/GMC/Cadillac Silverado/Sierra 1999-2004 V8-5.3L (exc . 1500 models) 1999-2004 V8-6.0L Silverado HD/Sierra HD 2001-04 V8-6.0L (1500HD Models only) Silverado SS 2003-04 V8-6.0L Tahoe/Yukon 2000-2004 V8-4.8L, 5.3L Suburban/Yukon XL 2000-2004 V8-5.3L, 6.0L Yukon Denali 1999-2004 V8-5.3L Yukon Denali 2001-2004 6.0L C3 2001 V8-6.0L Sierra Denali 2002-04 V8-6.0L Escalade 2002-04 V8-5.3L, 6.0L Escalade Ext. 2002-04 V8-6.0L Escalade ESV 2003-04 V8-6.0L Product Style: FIPK Estimated Horsepower Gain: 15.17 HP @ 5018 RPM Type: Gen II Replacement Filter: RF-1042 Weight: 11.7 lb (5.3 kg) Product Box Length: 18 in (457 mm) Product Box Width: 18 in (457 mm) Product Box Height: 12 in (305 mm) PRODUCT INSTALLATION GUIDE