The Dinan Carbon Fiber Cold Air Intake for the BMW 230i, 330i, and 430i on the G-Chassis brings the same full-airbox redesign philosophy to the B46-engined variants of the platform. The entire lower airbox has been reworked and enlarged, not just the lid, to house a filter 40% larger than the factory unit within the available engine bay footprint. A secondary inlet was incorporated after systematic testing of different opening geometries, with each configuration evaluated to confirm it supplies additional cool air without drawing heated engine bay air into the intake tract. The carbon fiber construction keeps the airbox lightweight and thermally insulating across both primary and secondary inlet paths.

Features:

+ Entire lower airbox redesigned and enlarged, not just the lid
+ 40% larger custom free-flowing filter for increased flow capacity
+ Secondary inlet tested across multiple geometries to confirm no intake temperature increase
+ Carbon fiber construction for lightweight, thermally insulating airbox
+ Fits BMW G42 230i, G20 330i, and G22 430i with B46 engine