Chrysler Mopar BB 413 426 440 HiRise Aluminum Intake Manifold [Polished] The dual plane

The dual plane

They have injector bosses precisely positioned and machined for excellent fuel spray patterns and maximum power

each Manifold is 100% pressure tested for leaks to eliminate installation problems

and corrosion-treated

you must use one that is also approved as street legal for your application

Chrysler Mopar BB 413 426 440 HiRise Aluminum Intake Manifold [Polished] The dual planeStep up to the high rpm power of an open plenum with Speedmaster HiRise intake manifolds. These cast aluminum manifolds accept square bore carburetors and are pressure tested to ensure maximum performance. They start to make awesome power around 3,000 rpm.