The Dinan Carbon Fiber Semi-Open Cold Air Intake improves airflow to the BMW B58 engine with a larger airbox and filter element, sharpening throttle response and easing strain on the turbocharger. The semi-open lid adds an auditory port for a pronounced sporty intake note. Its carbon fiber intake tube deletes the factory baffling and Helmholtz chamber that create turbulence and rob power, straightening the tract for cleaner flow. The airbox is 30% larger than stock, filter area grows 34% (from 76.3in² to 102.1in²), and the injection-molded Air Mass Meter housing is 8% larger. On an otherwise stock car it produces gains of +15 HP and +13 lb-ft at 6000 RPM.
Specifications
| Type | Semi-open carbon fiber cold air intake |
| Intake Tube | Carbon fiber (factory baffling and Helmholtz chamber deleted) |
| Airbox | Semi-open, 30% larger than stock |
| Filter Area | 102.1in² (34% more than stock 76.3in²) |
| Air Mass Meter Housing | Injection-molded, 8% larger than stock |
| Power Gain | +15 HP / +13 lb-ft @ 6000 RPM |
| Part Number | D760-0046-A |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2016-2018 | BMW | 340i | Base |
| 2017-2019 | BMW | 340i GT xDrive | Base |
| 2016-2018 | BMW | 340i xDrive | Base |
| 2017-2020 | BMW | 440i | Base |
| 2017-2020 | BMW | 440i Gran Coupe | Base |
| 2017-2020 | BMW | 440i xDrive | Base |
| 2017-2020 | BMW | 440i xDrive Gran Coupe | Base |
| 2017-2021 | BMW | M240i | Base |
| 2017-2021 | BMW | M240i xDrive | Base |
Shipping
- Orders placed before 3 PM ET typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
