BMW 430i Performance Air Intake - Dinan - Carbon Fiber Semi-Open - ‘17–‘20. A precision-engineered semi-open cold air intake for B46/B48-powered 430i models, pairing full carbon construction with a purposeful, sporty intake sound.

Designed around a larger air box and filter, this intake reduces restriction and turbo strain while sharpening throttle response. Dinan’s optimized carbon tube removes factory baffling and the Helmholtz chamber to cut turbulence so the engine can breathe freely. On a stock vehicle, testing shows gains of +6 hp and +6 lb-ft at 5000 RPM. With a 34% increase in filter area (76.3→102.1 in²), a 30% larger box, and an injection-molded air-mass-meter housing that’s over 20% larger than stock, airflow is consistently improved. The semi-open lid adds a more pronounced intake note without abandoning efficiency.

Features

• Full carbon fiber construction with optimized intake tube
• +6 hp and +6 lb-ft at 5000 RPM on a stock vehicle
• 34% larger filter area; 30% larger air box
• Larger AMM/MAF housing for improved flow
• Quick, straightforward installation
• CARB EO D-176-56 on select 2019–2021 230i/330i/430i; verify for your 430i

Have questions or planning a build? Call our Austin, TX shop at 512-982-9393 or our Los Angeles, CA area shop at 562-981-6800. We offer professional installation and customization at both locations.

If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov