S65 Carbon Airbox (E9x M3)
This is the CF Airbox/Plenum for the E9x M3 with the S65 V8 engine. It is a direct bolt-on and installation time is approximately 45 minutes. No additional hardware is required. The plenum offers a larger internal air-volume compared to stock plenum. The sound of the V8 engine is enhanced markedly by a more aggressive engine note and higher sound level.