The Alpine PSS-TSUB-T3A is a 10-inch sealed subwoofer and amplifier upgrade kit designed for 2017–2024 Tesla Model 3 vehicles with the factory premium audio system. It replaces the factory 8-inch subwoofer with a more powerful 10-inch sealed enclosure and includes the Alpine KTA-200M mono amplifier, Tesla-specific harnesses, and line output converter for a plug-and-play installation without cutting or modification. | Alpine | | PSS-TSUB-T3A, 10" Subwoofer Upgrade Kit for 2017-24 Tesla Model 3 | Best Buy