NOS 05101BNOS Super Powershot Wet Nitrous System for 4150 4-Barrel Carburetor - Black

The NOS 05101BNOS Super Powershot is a complete wet nitrous oxide injection system designed for V8 engines equipped with Holley 4150 square-bore or Carter AFB (late) 4-barrel carburetors. As a wet system, it delivers both nitrous oxide and fuel simultaneously through a low-profile injector plate, producing exceptionally smooth and consistent power delivery across the RPM range.

At the heart of the kit is a ½-inch thick solid billet/die-cast aluminum injector plate engineered for precise, even distribution of nitrous and fuel. The system is adjustable and includes jetting for 100, 125, and 150 horsepower gains, with a maximum supported output of 175 horsepower. Activation is handled via microswitch for reliable, repeatable engagement.

Key Features:

• Wet nitrous system for exceptionally smooth power delivery
• Fits Holley 4150 square-bore and Carter AFB (late) 4-barrel carburetors
• Adjustable system with included jetting for 100, 125, and 150 HP gains
• Maximum supported horsepower: 175 HP
• ½-inch thick aluminum injector plate for excellent nitrous and fuel distribution
• Low-profile plate design — only 0.5 in. thick
• Microswitch activation
• Nitrous solenoid: Powershot-style with 2 solenoids included
• Includes 10 lb. black nitrous bottle (6061-T6 aluminum construction) with mounting brackets
• Includes all studs, jets, plumbing, gaskets, mounting hardware, and instructions
• Durable black finish throughout

Fuel Pump Requirement: To properly support the Powershot system, a fuel pump must operate between 4.5 and 7.0 PSI with a minimum flow rate of 0.1 gallons per horsepower at 6 PSI. For example, a 350 HP application requires a pump flowing at least 35 gallons per hour at 6 PSI.

Important Notice: This system is intended for off-road and closed-course competition use only. Installation on emissions-controlled street vehicles is prohibited by law. California Proposition 65 warning applies. Bottle ships empty.