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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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Description
Dinan Cold Air Intake for 2020-2024 BMW M240i/M340i/M440i D760-0069Dinan Cold Air Intake 2020 2024 BMW M240i M340i M440i Looking for more, for less? The all new G2x G4x Mx40i PEX Intake delivers all the performance and sound benefits as its carbon fiber sibling just with less showmanship resulting in the best dollar per horsepower B58 intake system available from Dinan. Features: More Power: Max gains of 9 WHP and 8 lb ft of torque on a completely stock vehicle High heat deflection PEX construction and an OEM look
Dinan Cold Air Intake - 2020-2024 BMW M240i/M340i/M440i
Looking for more, for less? The all new G2x/G4x Mx40i PEX Intake delivers all the performance and sound benefits as its carbon fiber sibling -- just with less showmanship -- resulting in the best dollar-per-horsepower B58 intake system available from Dinan.
Features:
- More Power: Max gains of 9 WHP and 8 lb-ft of torque on a completely stock vehicle
- High heat deflection PEX construction and an OEM look
- Enjoyably louder, sportier sound
- Improved throttle response
- Outflows factory intake by 58% or more
- Larger volume air box (60% larger than stock)
- 40% increase in filter area (stock: 82 in?, Dinan: 115 in?) for optimum flow
- Compatible with all G2x Mx40i's with and without factory bracing
- Quick and easy installation
Specs:
| Brand | Dinan |
|---|---|
| Dinan Point Value | 3 |
| Emission Code | 7 |
| Labor Time (Hours) | 1 |
| Max HP Gain | 9 @ 6500 RPM |
| Max Torque (lb-ft) Gain | 8 @ 6000 RPM |
| Product Type | Cold Air Intake |
| Sale Category | Cold Air Intakes |
| Warning | California Proposition 65 |
| Warranty | Dinan Factory Matching (4yr/50k) Warranty |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2024 | BMW | M240i | Base |
| 2022-2024 | BMW | M240i xDrive | Base |
| 2020-2024 | BMW | M340i | Base |
| 2020-2024 | BMW | M340i xDrive | Base |
| 2021-2024 | BMW | M440i xDrive | Base |
| 2021-2024 | BMW | M440i | Base |
| 2022-2024 | BMW | M440i | Base |
| 2022-2024 | BMW | M440i xDrive Gran Coupe | Base |
| 2022-2024 | BMW | M440i Gran Coupe | Base |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Good quality filter
Item Package Quantity: 1
Great air flow with good filtration. It was the correct size which made the installation breeze. Definitely recommend this filter as a replacement.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Good value filter
Item Package Quantity: 1
Fit perfectly, works well
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Reviewed in the United States on May 17, 2026
★★★★★ 5
O.E quality
Item Package Quantity: 1
Very impressed with the quality. Usually cheaper aftermarket filters are thin and flimsy. This is very durable and much better than what came out of my car. Fit my Odyssey perfectly.
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Reviewed in the United States on May 30, 2026
★★★★★ 4
A reliable purchase doing exactly what I expected
Item Package Quantity: 1
Look, you know how it is – what’s a game-changer for one person is just another Tuesday for another. For me, this Puroma Cabin Air Filter with Activated Carbon landed exactly where most good products do: solid and dependable.
It arrived precisely as described, the activated carbon element is there, and it installed without a hitch in my vehicle. The air quality inside definitely feels cleaner, and it's doing its job filtering out the usual suspects. Does it redefine the very concept of cabin air filtration or deliver some earth-shattering innovation? Nah, not really. It’s a well-made, effective replacement that perfectly fulfills its purpose without any fuss or unexpected brilliance.
A reliable purchase doing exactly what I expected. A firm 4 stars.
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Reviewed in the United States on September 9, 2025
★★★★★ 5
Easy Cabin Filter Swap For Cleaner Air
Item Package Quantity: 1
I picked up this Puroma cabin air filter to replace the old one in my Honda and it has worked out very well. It fit the housing just like the original, slid in without any forcing, and the whole swap took only a few minutes. The construction feels solid for the price and the edges seal properly so air is not just bypassing the filter.
After installing it, the air from the vents smelled noticeably fresher, especially when using recirculate. The activated carbon layer seems to help cut down on that stale or slightly musty smell that builds up over time. For something that is easy to forget about, changing this filter makes a real difference in everyday driving comfort.
If you have a compatible Honda or Acura and want an affordable replacement that you can install yourself instead of paying dealership prices, this Puroma cabin filter is a very practical option.
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Reviewed in the United States on December 10, 2025