This NON-HEMI Predator 212 “stock appearing” air box fits perfectly in place of the original but opens the air passage up from a 1 inch hole to a 3 inch slot. The air coming into the box has been upgraded from 5/16”holes to 5/8”. The stock lid and air filter both fit this new filter base. I have ran these boxes on my land and sea water brake engine dyno and have posted the results in the pictures with various engine combinations. I HAVE NOT seen much gain on a bone stock engine but as you add things like timing and exhaust I have then seen as much as a 1 horsepower gain, pay attention to the engine specs at the top of the dyno charts. These dyno results are with a bone stock engine with a stock carb, jets, and e tube. The only thing changed was the timing, exhaust and my airbox. I suggest using glue or epoxy to make sure the box stays in place especially on the airbox base that only use one screw. You will receive the air-box 2 screws and a filter just like the factory filter. Free shipping in the USA.
