The four-cylinder G-chassis cars are light, balanced and a lot more fun than the spec sheet suggests. What they do not have is much intake sound or much airbox. Change that and the car feels more awake every time you pull out of a parking spot.
The Dinan Carbon Fiber Cold Air Intake for the BMW G20 330i, G22 430i and G42 230i flows 58% more air than the stock system. Dinan did not stop at a new lid. The entire lower airbox is redesigned and 60% larger than stock, and it holds a custom filter with 40% more area than the factory element.
How the Dinan Carbon Fiber Cold Air Intake Flows More Air
On Dinan's flow bench the system is at least 58% less restrictive than the factory intake. Filter area grows from 82 sq in to 115 sq in, and the semi-open design adds patterned secondary inlets. Dinan tested those openings to confirm they feed extra air without raising intake temperatures, and the kit still works with the factory snorkel. You also get more induction sound, which is half the fun on a four-cylinder.
The lid and lower box are real carbon fiber, not a vinyl wrap or hydro-dipped plastic. It works with or without the factory strut bracing, so nothing else on the car has to change.
Dinan Cold Air Intake Install and Legal Status
Plan on about one hour with basic tools, no cutting or drilling. Dinan does not list a tune as required. Before you order, know this: it is legal under EPA's Tampering Policy dated November 23, 2020, but it is not legal for sale or use in the State of California. CARB testing is pending and no Executive Order number has been issued. Dinan part number D760-0059. Sold by AutoTecknic, an authorized Dinan dealer.
What's Included
- Carbon fiber intake box lid
- Carbon fiber lower intake box
- Custom high-flow air filter
- Mounting hardware
Key Features
- 58% more airflow than the stock system, per Dinan
- At least 58% less restrictive than the factory intake on Dinan's flow bench
- Airbox 60% larger than stock, full lower box redesign
- 40% more filter area: 115 sq in vs 82 sq in stock
- Semi-open design with tested secondary inlets
- Works with the factory snorkel and with or without factory bracing
- Real carbon fiber construction, not a wrap or overlay
- Bolt-on install, about 1 hour
Vehicle Fitment
Fits the following four-cylinder BMW G-chassis models:
- BMW 330i / G20 Sedan (2019-2024): 330i, 330i xDrive
- BMW 430i / G22 Coupe (2021-2024): 430i, 430i xDrive
- BMW 430i / G23 Convertible (2021-2024): 430i, 430i xDrive
- BMW 430i / G26 Gran Coupe (2022-2024): 430i, 430i xDrive
- BMW 230i / G42 Coupe (2023-2026): 230i, 230i xDrive
Not listed by Dinan for 2025 and later 330i or 430i models.
Installation Notes
Most owners with basic hand tools can do this in about an hour. Work on a cool engine and follow the Dinan instructions included with the kit.
- Let the engine cool completely and remove the engine cover if fitted.
- Unclip the factory airbox lid, loosen the clamps and remove the complete factory airbox.
- Install the Dinan lower box and filter in the factory location, keeping the factory snorkel.
- Fit the carbon lid and secure every clamp with the supplied hardware.
- Start the engine and confirm all connections are tight with no warning lights.
