The included measurements indicate the OD of the intake flange at the rear. These are designed to fit 4-headlight vehicles with 4x6" headlight systems.

This Billet Aluminum Air Intake with optional Halos is the perfect addition to your FourSix Headlight kit or as a standalone intake. Now you can create a functional and wicked-looking headlight and intake system. These have been designed and engineered to mount into your existing headlight bucket and trim ring, mounting just like a headlight. 

*The intake may require enlarging the hole in the headlight bucket to achieve proper fitment.