SKU: 96399583085

Dinan Cold Air Intake - BMW / G2X / G42 / B58 / M240i / M340i / M440i

Sale price$221.85 Regular price$246.50
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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

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Description

Dinan Cold Air Intake - BMW / G2X / G42 / B58 / M240i / M340i / M440iLooking 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. The Mx40i's are an impressive lot in terms of performance and style but that is not conveyed when viewing its lackluster stock intake system swaddled by seemingly unfinished strut braces (where


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.

The Mx40i's are an impressive lot in terms of performance and style but that is not conveyed when viewing its lackluster stock intake system swaddled by seemingly unfinished strut braces (where applicable). In stock trim, the Mx40i comes with a dry and lifeless air box housing a basic panel filter that is also accompanied by an intake resonator whose job it is to eliminate turbo/intake noises. The same noises that those in the performance world relish. Essentially BMW has seen fit to give Mx40i owners an air box that looks uninspiring, flows adequately but not ideally, and emits no noise. The exact opposite of what the platform exudes otherwise. The Dinan PEX intake for the platform corrects these wrongs and delivers a semi-open intake capable of flowing 58% more air than the stock system resulting in additional top end power and improved throttle response. At the same time revealing an enhanced OEM-like appearance that blends seamlessly with surrounding factory plastic under hood components, and an increase in sound courtesy of the removal of the intake resonator and implementation of a semi-open design.

To achieve the gains in flow that set the Dinan intake system apart, the entire lower box of the system, and not just the lid, has been reworked and enlarged to make use of as much of the available real estate as possible within the engine bay. In turn, this allows a 40% larger, custom, free flowing filter to be housed within and maximum flow to be realized. However, a secondary inlet has always been desired by Dinan in order to effectively fill the volume of the enlarged air box and increased filter surface area. This desire led to a multitude of experiments being conducted on the effectiveness of a possible open-air inlet in the system. With different shapes, locations, and sizes of openings being tested, the goal was to ensure that the added secondary inlet did not cause any unwarranted side effects such as an increase in air temps in the system. This is commonplace with open-air intake systems where overheated engine bay air is employed in the intake tract. The results of these tests showed that the patterned openings present in the final iteration of the box located on the opposite side from the engine provided a perfect balance of additional volume to assist the factory inlet all the while not causing an increase in turbo inlet temperatures. This was the case regardless of testing conditions (single/multiple gear pulls, constant speed, 0-100mph runs, etc.).

With more air being pulled into the system, throttle response is improved and additional power is realized in the form of max gains of +9 WHP / +8 ft-lbs of torque. The secondary air inlets also allow the intake system to be more audible so the turbo spool and BOV can be appreciated. A stark difference from Dinan's traditional fully sealed systems where induction noise is not nearly as recognizable. While power and sound are the stars, the modest PEX construction fuses effortlessly into the factory engine bay for a reserved visual that despite basic materials still manages to draw attention. It's an economical solution to form and function for a vehicle that permeates both.


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 in², Dinan: 115 in²) for optimum flow
  • Compatible with all G2x Mx40i's with and without factory bracing
  • Quick and easy installation


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 96399583085

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Emily D
Dallas, US
★★★★★ 5
Love!
Style: Kids SPF 50, Size: 5 Fl Oz (Pack of 1)
This is the best smelling sun screen ever!! It sprays so smooth as well!! My kids sensitive skin takes to it! It’s not cold and the coverage is great!! Also love that HSA available
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Reviewed in the United States on September 9, 2024
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Aifos
Port Orchard, US
★★★★★ 5
Do NOT buy, it’s literal poison. Has forever chemicals.
Style: SPF 50 Spray Mineral Sunscreen, Size: 4.5 Ounce (1 Pack), Style: SPF 50 Spray Mineral Sunscreen, Size: 4.5 Ounce (1 Pack)
🚨do NOT buy this🚨It has forever chemicals in it - Tetrafluoropropene. Also has Hydrogenated polydecene - The chemical structure of synthetic hydrocarbons is similar to that of MOSH, another group of petrochemical-derived ingredients. A 2016 study states that "it seems prudent to assess their safety in the same way," suggesting that they could have comparable toxic effects on the body. MOSH may accumulate in the body, particularly in lymph nodes and body fat, where they could trigger inflammatory reactions. Liver effects have also been observed experimentally in certain types of rats, but have not been confirmed in humans to date. The European Food Safety Authority (EFSA) recommends continuing studies to better assess the toxicity of these MOSH compounds, as "the consequences of the long-term accumulation of MOSH on human health have not been evaluated and remain uncertain." These compounds should especially be avoided in products where there is a risk of ingestion, such as lip balms and lipsticks. Moreover, the production of this ingredient has a significant environmental impact due to the extraction of hydrocarbons from underground and the high energy consumption required for its manufacture. *5 stars only so people will see this.*
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Reviewed in the United States on May 25, 2026
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Brad S.
Charlottesville, US
★★★★★ 5
Best Mineral Sunscreen Ever With Zinc And Titanium ... All Of The Good Stuff, None Of The Bad
(This review is specifically for the SPF 30 spray.) Goes on ultra-light and silky-smooth, blends in easily and completely, leaves no residue, and provides effective UVA/UVB sun protection. Zinc oxide and aloe vera receive most of the emphasis, although there's no picture of – or word about – the ingredients label (which there should be). The aloe adds a very gentle, soothing touch, and is the most abundant inactive ingredient. More importantly, there's no mention of the other active ingredient, titanium, which combines with zinc to provide a comprehensive, potent, protective mineral sunscreen. With a sunscreen this good, why even consider using anything else?
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Reviewed in the United States on April 26, 2025
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JBaker
Port Orchard, US
★★★★★ 1
Covered in white sticky film
Used this today, thought I was being healthy conscious picking this brand. Let me tell you, it doesn't spray well, it leaves blotches of white sticky film that I couldn't even run in. I look like I made out with a snowman, kind of embarrassing on the beach as I need color, not more white streaks all over my body. First and last time for me, the other brands are invisible, this one coats you like a white barn.
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Reviewed in the United States on July 29, 2024
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Brittany Ransdell
Cuba, US
★★★★★ 3
Sunscreen won’t spray
Style: SPF 50 Spray Mineral Sunscreen, Size: 4.5 Ounce (1 Pack)
Love the sunscreen but it literally stopped spraying after about 5 uses. There is a lot still left to use but the product won’t spray.
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Reviewed in the United States on July 20, 2025

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