SKU: 80045070172

034Motorsport X34 Carbon Fibre Cold Air Intake - BMW B58 F Series M140/M240/M340/M440

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Description

034Motorsport X34 Carbon Fibre Cold Air Intake - BMW B58 F Series M140/M240/M340/M440034 Motorsport X34 Carbon Fibre Cold Air Intake BMW B58 F Series M140 M240 M340 M440. 034Motorsport's X34 Carbon Fibre Cold Air Intake System delivers improved power, sound, and acceleration to BMW F2X F3X B58 owners in a clean OEM+ package. Through extensive evaluation of the factory airbox design, 034Motorsport's engineers were able to create a performance replacement that allows for increased airflow to the turbocharger and engine. The X34 Carbon

034 Motorsport - X34 Carbon Fibre Cold Air Intake - BMW B58 F Series M140/M240/M340/M440.

034Motorsport's X34 Carbon Fibre Cold Air Intake System delivers improved power, sound, and acceleration to BMW F2X/F3X B58 owners in a clean OEM+ package.



Through extensive evaluation of the factory airbox design, 034Motorsport's engineers were able to create a performance replacement that allows for increased airflow to the turbocharger and engine. The X34 Carbon Fiber Cold Air Intake System offers measurable performance improvements, simple bolt-on installation, and unsurpassed fit and finish.

034Motorsport has developed this comprehensive performance intake solution for the BMW F2X/F3X B58. Subsequently, the X34 Carbon Fiber Cold Air Intake System offers discerning enthusiasts measurable increases in horsepower and torque, sporty induction and turbocharger sounds, and a beautiful carbon fiber airbox design.

Throughout the development process, multiple designs were modeled, prototyped, and tested - all to ensure that the X34 Carbon Fiber Cold Air Intake System delivers measurable performance benefits and superb fitment. The X34 Carbon Fiber Intake System utilizes a partially-enclosed airbox that uses the factory fresh air inlet duct and heat shield that houses a 3.5" inlet conical air filter. This filter is mounted to a CNC-Machined Velocity stack, which smooths the airflow and increases air velocity, allowing for even more airflow through the matching CFD-optimized filter tube to the turbo inlet.

MINIMIZING UNNECESSARY FILTER SHROUDING:

034Motorsport focuses on optimizing every aspect of the intake system across a broad range of variables and compromises. A critical component of a high-flowing performance intake is the ability for air to flow around and into the filter. If the air cannot flow freely around the filter, it will be restricted from getting into it. Many aftermarket kits fit too large of a filter in an enclosure that cannot accommodate its size, thus choking the filter and reducing its overall flow. This often happens when a product is engineered for one variable at the expense of others.

034Motorsport conducted extensive tests and refined its development of the intake design to allow for maximum airflow surrounding the air filter, allowing for optimal airflow to, and through, the filter. The final result is the right size filter in the right size filter housing, creating maximum airflow and performance with OEM level filtering, the ultimate goal of any intake system. Be cautious of any intake that brags only of the air filter size without taking into account the detrimental effects of shrouding the filter.

MAXIMIZING AIRFLOW:

034Motorsport engineers first created a CFD-optimized 4-Ply silicone intake tube, which is a direct, high-performance replacement for the plastic factory accordion/sound deadening hose. Using CAD software and 3D scanning technology, 034Motorsport was able to optimize the cross-sectional area of the intake tube while being mindful of space constraints. The resulting part is a functional work of art - maximizing performance given the factory space constraints and featuring smooth transitions that ensure optimal airflow to the throttle body.

PERFORMANCE AIR FILTER:

The X34 Carbon Fiber Intake houses a high-flow conical air filter with a double-layer pleated cotton filtration medium, capable of trapping particles as small as 5 Microns. This air filter design offers increased flow through an enlarged filtration surface while ensuring superior filtration. We have tested this air filter in applications over 800HP with minimal restriction and superior OEM quality air filtration.

While many intake kits leave the air filter unsupported and "flopping" around, 034Motorsport engineers designed a clever air filter support that not only prevents unwanted movement but also allows compliance to accommodate engine movement under varying load conditions. An added benefit is an air shroud that doesn't move and rub on other engine compartment components like many other designs on the market do.

X34 COLD AIR INTAKE SYSTEM FEATURES:

  • Developed In-House by 034Motorsport's Engineering Team
  • Improved Airflow from Factory Airbox and Intake Tube
    • Stock Intake: 674 CFM (@ 28" H2O)
    • X34 Intake: 814 CFM (@ 28" H2O) - 21% Increase
  • High-Quality Carbon Fiber Airbox
  • Improved Throttle Response
  • High-Gloss Epoxy Finish
  • Enhanced Engine & Induction Sounds
  • Superb Fit & Finish to Match Factory Engine Bay
  • Stealthy OEM+ Design
  • High Flow Conical Air Filter
  • CNC-Machined Billet Aluminum Velocity Stack MAF Housing
  • Large-Diameter CFD-Optimized Turbo Inlet Hose
  • Securely Installs Using Factory Mounting Points
  • Simple, Straightforward Installation

WHAT'S INCLUDED:

  • X34 Carbon Fiber Airbox
  • Billet MAF Housing Adapter
  • Silicone Hose
  • Billet Mounting Button
  • 3.5" Inlet High Flow Air Filter
  • Gold Heat Barrier Tape
  • Misc. Hardware

CFM GAINS:

CFM stands for "cubic feet per minute" of airflow. The higher the number, the higher the horsepower an intake can support. At 034Motorsport, we design our intakes to have substantial flow increases over the factory intake, and we test all our intakes at 28" of water (how much vacuum is used to suck air through the intake) on a Superflow airflow bench which gives us very accurate and repeatable test results. A stock intake that flows 200CFM may only freely support about 300HP. An intake that flows 400CFM can support roughly twice that power or 600HP.

  • Stock Intake Intake: 674 CFM @ 28in H₂O
  • X34 intake: 814 CFM @ 28in H₂O

Fitment:

Make Model Years Chassis Engine
BMW 340i 2012-2019 F30 B58 3.0L
BMW 440i 2014-2019 F32 B58 3.0L
BMW M240i 2014-2020 F2X B58 3.0L


Installation:

The installation of your X34 Carbon Fiber Cold Air Intake System, BMW F2X/F3X B58 3.0L is a straightforward process that will take approximately 1 hour to complete. 

Download the X34 Carbon Fiber Cold Air Intake System, BMW F2X/F3X B58 3.0L Install Guide

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: 80045070172

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Annie Love
Lexington, US
★★★★★ 3
Not the Same 🤍
Size: Size 2 (184 Count)
I loved the Mama Bear size 1 diapers, so I expected the “plush” size 2s to be the same. Unfortunately, they feel completely different. These seem thinner and not quite as absorbent as the size 1 regular pack. The design is also really busy, which makes the wetness indicator harder to see at a quick glance. With babies, that little line matters more than you’d think. I’ll still finish the pack, but I’m not sure I’d repurchase this “plush” version. If you’re choosing between them, I’d recommend sticking with the regular pack instead. In comparison, Huggies still perform better than these for us. 🤍✨ They don’t hold blowouts at all but they do fit well. They’re also not stretchy. I noticed the print on my baby’s legs.
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Reviewed in the United States on March 14, 2026
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Gabriela V Joshi
Dallas, US
★★★★★ 5
Great cost efficient option
Size: Size 4 (36 Count)
I switched over from Millie Moon and really like these. They’re affordable, don’t have harmful additives, and are soft and gentle on my babies. Holds a significant amount and doesn’t leak even on overnight wears. I like the simple non character design as well.
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Reviewed in the United States on February 2, 2026
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Savanna
Pawtucket, US
★★★★★ 2
Every other diaper leaked
Size: Size 7 (92 Count)
I bought these diapers because they were the cheapest available to buy with a gift card my family was given. Normally I use the bulk store brands. The diapers were very hit and miss. It varies from diaper to diaper even in a pack. My son does urinate heavily but even before he would get anywhere near a “full” diaper it would leak! Leading to wet pants and messes. We’ve never had this problem with other diaper brands. Even our cloth diapers hold better than half of these did. For note he falls below the max size for these diapers by at least 5 lbs. I don’t plan on repurchasing these because of the leaking issue. Beyond that they were easy to use like any other diaper, didn’t cause diaper rash, held together, but was subpar in absorption.
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Reviewed in the United States on November 19, 2025
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Jacqueline Bullion
Battle Creek, US
★★★★★ 5
Smells great
Great smells amazing
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Reviewed in the United States on April 22, 2026
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Badica
San Leandro, US
★★★★★ 5
Nice smell
This has a nice scent, works well, and did not cause an allergic reaction.
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Reviewed in the United States on March 23, 2026

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