Designed to improve "line of sight"air flow we moved the air inlet beneath the fuel rail and increased the plenum volume to make this manifold the top performer for the 5.9 Cummins engine. Made of 304 Stainless with a mild steel flange makes this the toughest and most resilient manifold on the market. Our design also allows for the head to be ported to the largest intake port opening of any manifold on the market today. This manifold is street,track, and dyno tested. The ZZ manifold gives you the option to run your factory heater grid and you can also add a nitrous spray bar . Our 16 bolt flange is designed so you do not have to drill into the push-rod tubes to mount our manifold .Complete installation kits are available. This is the most PROVEN manifold on the market today!
-Largest plenum volume-
-Optional nitrous Spray Bar-
-Ability to run factory heater grid-
-Largest intake port opening -
-Auto Cad files for CNC installation-
-Ceramic coating available-