This Billet LT4 Supercharger Lid replaces the upper supercharger lid on all GM LT4 Superchargers for a quick and clean install. Nitrous and fuel are injected into each cylinder from the side of the runner providing direct port like distribution ensuring maximum performance. This lid is made from a solid piece of billet aluminum with 1/8NPT machined directly into the plate so there is no need to worry about gaskets leaking. The nitrous system comes complete with billet aluminum and carbon fiber lightning solenoids, industry exclusive billet aluminum Lightning 500 bottle valve, stainless steel braided lines, stainless steel bottle brackets, wiring, switches jetting for 100 to 400WHP and every nut, bolt, and connector needed to install the system. The water/methanol system comes complete with billet aluminum and carbon fiber lightning water/methanol solenoids, high pressure electric pump, stainless steel hardlines, filtered nozzles, nickel plated fittings, composite reservoir, switches, NX stage 2 digital progressive controller that controls water methanol output, and every nut, bolt and connector needed to install the system.. This Billet LT4 Supercharger Lid replaces the upper supercharger lid on all GM LT4 Superchargers for a quick and clean install.Nitrous and fuel are injected into each cylinder from the side of the runner providing direct port like distribution ensuring maximum performance.This lid is made from a solid piece of billet aluminum with 1/8NPT machined directly into the plate so there is no need to worry about gaskets leaking.The nitrous system comes complete with billet aluminum and carbon fiber lightning solenoids, industry exclusive billet aluminum Lightning 500 bottle valve, stainless steel braided lines, stainless steel bottle brackets, wiring, switches jetting for 100 to 400WHP and every nut, bolt, and connector needed to install the system.The water/methanol system comes complete with billet aluminum and carbon fiber lightning water/methanol solenoids, high pressure electric pump, stainless steel hardlines, filtered nozzles, nickel plated fittings, composite reservoir, switches, NX stage 2 digital progressive controller that controls water methanol output, and every nut, bolt and connector needed to install the system.. Nitrous Express Nitrous & Water Injection Kit w/Billet LT4 Supercharger Lid w/10lb Bottle. Nitrous & Water Methanol System w/Billet LT4 Supercharger Lid.. Nitrous & Water Methanol System w/Billet LT4 Supercharger Lid. Nitrous/Water Methanol System w/Billet LT4 Supercharger Lid. NITROUS, INTAKE, DIRECTPORT, WATER/ METHANOL, LT4. NITROUS; INTAKE; DIRECTPORT; WATER/METHANOL; LT4. Nitrous Oxide Injection System Kit. Quick And Clean Install. N2O Injection System. N2OSys

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