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.

Genuine Nitrous Express. Part number 20939BMF-00.

Ships from US warehouse.

WARNING: California Proposition 65 — this product can expose you to chemicals known to the State of California to cause cancer or reproductive harm.

Note: Not CARB approved — not for sale or use on pollution-controlled vehicles in California.