If your vehicle has factory 6x8-inch oval speakers and you want to upgrade to standard 6.5-inch round aftermarket speakers, this adapter makes it possible. It bridges the gap between the oval factory opening and the round speaker, giving you a solid sealed mounting platform without any cutting or drilling.

CNC-machined from solid-core virgin HDPE - the same material used in marine and industrial applications. HDPE does not absorb moisture, resists vibration, and remains dimensionally stable across extreme temperatures - unlike MDF or 3D-printed alternatives that warp and swell.

Fits over 50 Ford, Lincoln, Mazda, and Mercury vehicles from 1989 to 2021. Check the fitment table below for your specific year, make, and model. Sold as a pair.