Infiniti G35 Coupe 2003-2007 Speaker Upgrade Kit — Harmony Speakers with HA-A400.4

Audio upgrade package for Infiniti G35 (coupe) model years 2003-2007. This kit pairs Harmony brand speakers with the HA-A400.4 amplifier to replace the factory sound components. Specifically tailored to fit the G35 coupe from 2003-2007, the set combines Harmony speakers and the HA-A400.4 for a straightforward swap and improved in-car audio.