BMW 340i Turbo Inlet Pipes - Dinan - Carbon Fiber (2016–2021). This direct-replacement carbon fiber inlet improves airflow and turbo response while enriching the induction soundtrack.

Replacing the weak factory plastic piece, Dinan’s inlet uses rigid carbon construction and CNC-machined fittings for precise fitment as an OEM-style swap. By removing the factory resonator(s) and optimizing the internal path, the pipe maintains a larger, more uniform cross-section that reduces turbulence and restriction. The result is greater potential flow, improved efficiency, and a more pronounced turbo note with straightforward bolt-on installation.

Features

• Carbon fiber construction with CNC-machined fittings
• Average 10.8% larger internal diameter vs. OEM
• Up to 24% greater overall volume than stock
• Deletes factory sound resonator(s) for increased turbo vocalization
• Direct-replacement, quick bolt-on fit for 2016–2021 BMW 340i (B58)

Have questions or want to book service? Call our Austin, Texas or Los Angeles, California area shops for installation and customization support: 512-982-9393 (TX), 562-981-6800 (CA).

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