Velocity Stack Air Filter National 6 groove belt drive 4%

6 groove belt drive 4% OD

Fits: K20Z & K24A

48mm in length to fit more applications

and single cone 5th and 6th synchro design

You can even use other adapter sizes such as 16AN to 20AN fitting

Velocity Stack Air Filter National 6 groove belt drive 4%PLM 3" Composite Velocity Stack and Filter Kit Velocity stacks are also called intake trumpets, which gives you a bit better idea what they are. Theyre little trumpet shaped air intakes for your engine. The trumpet shape smooths the flow of air into the intake, allowing the most air possible to flow through the given volume of the intake. Put simply, more air means more power for an engine. Includes: Air filter Velocity stack Silicone hose 3x hose