Dinan Carbon Fiber Cold Air Intake - BMW G42 M240i / G20 M340i

The Dinan Carbon Fiber Cold Air Intake for the BMW G42 M240i and G20 M340i reworks the entire lower airbox, not just the lid, maximizing available engine bay real estate to house a filter 40% larger than the OEM unit. A secondary inlet was incorporated after extensive testing of different opening shapes, sizes, and locations, each evaluated to confirm the added air source did not raise intake air temperatures. Heat soak is the common failure mode of open-air intake systems where hot engine bay air enters the tract. Dinan's testing confirmed their secondary inlet brings in additional cool air without that penalty, giving the system a wider intake path and greater flow capacity without the trade-offs that limit competitors.

Features:

+ Entire lower airbox redesigned and enlarged, not just the lid
+ 40% larger custom free-flowing filter for increased flow capacity
+ Secondary inlet adds a second air source without raising intake air temperatures
+ Tested across multiple opening shapes and locations to confirm zero heat soak
+ Carbon fiber construction for lightweight, thermally insulating airbox
+ Fits BMW G42 M240i and G20 M340i with B58 engine