This is a vent designed to hold the in-cabin temperature sensor required for installing the JDM digital climate control system in left-hand drive applications. It occupies the factory hole in the gauge cluster surround trim. This spot is blank in the base model and is used for the cruise control buttons in models with this option. This uses Nissan part number 27720-15U00 which is the in-cabin temp sensor used on many late models Nissan and Infiniti including the JDM S14. The installation instructions can be found in the “Technical” tab at the top of the page.
Made in the USA.