The Arctic Air manifold design is unlike any other intake manifold on the market. Based on technology used in NASCAR air tubes, the Arctic Air elongates through the curve keeping air around the curve flowing at the same rate as if straight, to maximize the flow around the curve. Translation: smoother, cooler air entering your engine.
On a stock 5.9L Cummins engines Diesel Power Source reports horsepower gains between 13 to 25 on average, with modified engines being even greater. This will make for better power, fuel mileage, spool-up and cooler EGTs, not to mention it looks great to help decorate your engine compartment.
Cast from aircraft-grade aluminum, the Arctic Air’s seven pre-tapped ports in both 1/4-inch and 1/8-inch NPT, allow nitrous, water/meth, or boost gauges to be mounted either close to the head or farther away.