100% brand new items, never used or installed. Universal JDM Sport 2" / 52mm digital LED air/fuel ratio meter gauge. Air/fuel ratio gauge is a tuning tool that monitors your engine's air to fuel mixture (whether it's running lean, optimal, rich), and reading to see if any additional tuning is needed to maximize your engine's power and efficiency. Made by OEM approved manufacturers with materials that meets or exceeds strict OEM requirements. Manufactured from high-quality ABS plastic material for superior strength. Features ultra-bright multicolored LED backlit display with user programmable background options. Requires a 12V power source. * Modifications will be required for mounting product. * No installation guides are included, we highly recommend seeking professional installation. Compatible/Replacement for: Universal Fitment ** Car compatibility chart is for search purposes only. **