Edelbrock Supercharger System #15665 is a bolt-on forced induction kit that features significant improvements for 2019-2021 Chevrolet/GMC 1500-series trucks with the 5.3L V8 engine. This kit is emissions-legal in all 50 states and provides a 60% increase in horsepower to 485 RWHP with a 57% increase in torque to 466 ft-lbs at the rear wheels when used with the supplied calibration and 4.00-inch pulley on 93-octane pump gas. An Edelbrock Supercharger is the perfect power adder whether you plan to tow a boat, haul heavier loads, or you just want to feel your truck come to life without sacrificing daily drivability. Edelbrock Supercharger Kit #15665 for Chevy/GMC trucks features a redesigned lid with more clearance under the cowl for easier installation and a restyled badge lets people know that your system is Made in the USA by Edelbrock. Installation of the Edelbrock Supercharger requires no cutting or modifications and fits neatly under the stock hood. If you're concerned about the effect on MPG, the increase in power comes with little to no loss in fuel economy during normal driving thanks to the system’s integrated bypass valve that mitigates parasitic power loss. This is a true bolt-on kit that requires no additional modifications to the stock 5.3L engine. The Edelbrock Supercharger features a self-contained lubrication system with a 100,000-mile service interval and a patented high-capacity Dual-Pass 3-Core (DP3C) intercooler. The durable black powder-coating blends nicely with the engine and results in an attractive underhood presentation that looks like the factory put it there. Each kit includes a complete set of preformed hoses, hardware and a full-color manual that provides clear step-by-step instructions for ease of installation. Unlocking of the factory PCM is included in this kit. Covered by Edelbrock’s industry-leading 3-year/36,000-mile powertrain warranty.