BMW 440i Turbo Inlet Pipes - Dinan - Dinan - Carbon Fiber - `16-`21
BMW 440i Turbo Inlet Pipes - Dinan - Dinan - Carbon Fiber - `16-`21
Available Options
Drive now, Pay later with Affirm
or with PayPal
Both options will be available upon checkout.
BMW 440i Turbo Inlet Pipes by Dinan (Carbon Fiber, 2016–2021). A direct‑replacement inlet that swaps the weak OEM plastic piece for better airflow and a richer turbo note.
Built for the B58 440i, this inlet uses CNC‑machined fittings for proper fit and a larger, optimized path. Deleting the factory resonator and turbulence helps the turbo work more efficiently, sharpen response, and reveal more induction sound. It averages a 10.8% larger internal diameter and about 24% greater overall volume than stock.
Features
- Carbon fiber construction for durability
- CNC‑machined fittings; OEM replacement
- Up to 24% greater flow; deletes factory resonator
Questions or planning a build? Call us. We offer installation and customization at our Austin, TX and Los Angeles, CA area locations: 512-982-9393 (TX), 562-981-6800 (CA).
Buying multiple items? Ask about shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Need Assistance?
We're here to help!
Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
and get assistance from one of our sales team members!
Product ID Number: