Mopar Chrysler SB 318 340 360 MID-AIR™ MidRise Aluminum Intake Manifold [Polished] We control the entire machining

We control the entire machining process and use only premium materials

hard-starting engine

Speedmaster Keychains are the perfect way to let everyone know where you go for high performance aftermarket parts and accessories

unlike plastic alternatives

Mopar Chrysler SB 318 340 360 MID-AIR™ MidRise Aluminum Intake Manifold [Polished] We control the entire machiningThe Speedmaster MidRise Air design features the identical plenum and runner design as the normal MidRise. The main difference is that there is an open area under the plenum chamber. This feature is sometimes called an air gap design. The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine. This cooler air charge provides additional power and torque.