Ramair Foam Intake Kit for BMW GXX M240i/340i/440i
Let your B58-powered BMW breathe more easily. This Ramair foam intake kit replaces the restrictive factory airbox with a high-flow foam filter, a smooth rotomoulded intake pipe, and a CNC-cut heatshield. You get sharper throttle response, a crisper turbo induction sound, and a clean, factory-like fit with a smart carbon fibre cover.
Why choose this intake
The stock airbox is built for quietness and cost, not maximum flow. This kit opens up the intake path and shields it from hot engine bay air. The dual-layer foam filter flows well while still filtering fine dust. The result is more consistent performance and a more engaging drive, especially when you press on.
- Improved airflow for quicker throttle response and stronger mid-range pull
- Richer turbo and induction sound without being over the top
- CNC-cut, powder-coated heatshield helps reduce heat soak in traffic
- Rotomoulded intake pipe for a smooth, low-turbulence path
- Reusable Ramair foam filter – clean and re-oil with Ramair kit CK-003
- Carbon fibre two-piece top cover keeps the bay tidy and OEM+ in appearance
- Direct fit using factory mounting points, with step-by-step instructions
What’s in the box
Everything you need for a straightforward install:
- Black powder-coated heatshield
- Ramair dual-layer foam filter
- Carbon fibre two-piece top cover
- Rotomoulded intake pipe
- Full fitting kit with hardware and instructions
Fitment
Fits popular BMW G-series M240i, 340i, and 440i models with the B58 petrol engine. Please use our vehicle lookup tool or check the Vehicle Fitment tab to confirm fitment for your exact year and model.
Installation and maintenance
This is a bolt-on upgrade using common hand tools. No cutting of factory parts is required. A remap (ECU tune) is not required, though tuned cars may see greater benefit. For best results, clean and re-oil the foam filter at regular intervals using the Ramair maintenance kit (CK-003).
| SKU | JSK-347-BK |
| Brand | Ramair |
| Filter media | Dual-layer performance foam, washable and reusable |
| Intake pipe | Rotomoulded polymer for smooth internal flow |
| Heatshield | CNC-cut, powder-coated metal |
| Cover | Two-piece carbon fibre |
| Sound | Moderate increase in induction and turbo noise under load |


