Plug & Play • Factory Amp Compatible • Huge Upgrade Over OEM
Designed specifically for the BMW Z3.This Stealth Box + Earthquake SWS package is a major upgrade over the weak factory subwoofer.
✅Plug & play with the factory amplifier
✅Drop-in replacement– no cutting or custom wiring
✅Fits under the factory subwoofer lid – it closes properly
✅ Massive improvement in bass output and clarity
Simply remove your OEM sub, drop this in, connect it to the stock amp, and enjoy deeper, tighter bass — even with the top down.
Note:Not compatible with factory storage/oddment containers.
Clean install. OEM look. Real bass.
