BMW 340i Performance Air Intake - Dinan - Closed Cold Air Intake - Carbon Fiber - 2016-2018. This sealed carbon fiber system for the B58-powered 340i increases airflow while keeping intake temps in check.

Dinan reworks the factory design with a larger sealed airbox and expanded filter area to reduce restriction, sharpen throttle response, and lessen turbo effort. An optimized carbon fiber intake tube removes factory baffling and Helmholtz chamber to smooth airflow and let the natural induction note come through, while the closed layout keeps overall sound increase modest. On a stock vehicle, testing has shown gains of up to +15 HP and +13 lb-ft at 6000 RPM. Installation is straightforward.

Features

• 30% larger sealed airbox for improved heat isolation
• 34% increase in high-flow filter area (102.1 in² vs 76.3 in²)
• Injection-molded air mass meter housing ~8% larger than stock
• Optimized carbon fiber intake tube for reduced turbulence
• Dyno-tested gains up to +15 HP/+13 lb-ft @ 6000 RPM on stock B58
• Quick, clean install

Questions or fitment checks? Call us. We serve the Austin, Texas and Los Angeles, California area with installation and customization services at our shops: 512-982-9393 (TX) or 562-981-6800 (CA).

Buying 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