What does the BMW B58 silicone intake hose replace?

The MMX BMW B58 silicone intake hose replaces the factory plastic bellows pipe between the airbox and the turbo inlet. The OEM pipe includes an accordion bellows section and an upper resonator that create turbulence and restrict airflow; the MMX silicone hose removes both, providing a smooth, direct airflow path to the turbo.

Does the BMW B58 silicone intake hose work with the stock airbox?

Yes. The MMX silicone intake hose is compatible with the standard OEM airbox, the MMX air intake system, and most popular aftermarket intake configurations for the B58. It works as a standalone upgrade or as part of a staged intake build.

Is this a worthwhile upgrade without other intake modifications?

Yes. Fitted with the standard airbox, the MMX B58 silicone intake hose still removes the OEM restrictions and improves both airflow and induction sound noticeably. The gains increase further when paired with a high-flow air filter or aftermarket intake system, but the hose delivers real improvement as a standalone upgrade.

Will the hose deform under boost or heat?

No. The reinforced multi-ply silicone construction includes embedded rigidity elements specifically to prevent deformation under load and heat. The hose also allows just enough compliance to accommodate natural engine movement without stressing the intake connections.

How difficult is installation?

Installation is Level-1 difficulty and takes approximately 10 minutes with basic hand tools. The hose is a direct replacement for the factory unit using the same connection points. No cutting or permanent modification is required.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

MMX Silicone Intake Hose for Fxx BMW M140i, M240i, 340i, and 440i (B58 Engine)

BMW B58 silicone intake hose from MMX Performance replaces the factory plastic bellows pipe between the airbox and the turbo inlet on the F-series M140i, M240i, 340i, and 440i with a reinforced multi-ply silicone unit that delivers a smooth, turbulence-free airflow path. The OEM plastic pipe features an accordion-section bellows and an upper resonator that introduce turbulence and restrict flow before the turbo; the MMX silicone hose eliminates both, improving throttle response, sharpening induction sound, and allowing the turbo to receive air more efficiently. Constructed from high-quality reinforced silicone with embedded rigidity elements to prevent deformation under heat and load, the hose also incorporates stepped inlet and outlet profiles to maintain a consistent bore and smooth transitions throughout. A direct replacement for the factory unit, it installs in approximately 10 minutes and is compatible with the stock airbox, MMX air intake, and most aftermarket intake configurations.

Features

Replaces factory plastic bellows pipe and resonator with smooth-bore reinforced silicone
Eliminates OEM turbulence and restriction before the turbo inlet
Multi-ply silicone construction with reinforced rigidity elements
Stepped inlet and outlet for consistent bore and smooth transitions
Heat-resistant and pressure-tolerant; allows natural engine movement without stressing the intake
Enhances induction noise for a more engaging driving experience
Compatible with OEM airbox, MMX air intake, and most aftermarket intake systems
Direct fit; no permanent modifications required
Installs in approximately 10 minutes with basic hand tools

Applications

BMW 340i: F30, F31, F34 | 2015-2019
BMW 440i: F32, F33, F36 | 2016-2019
BMW M140i: F20, F21 | 2016-2019
BMW M240i: F22, F23 | 2016-2021

Notes

Compatible with B58 engines only. Does not fit B48 or other engine variants
Sold as a single hose

Frequently Asked Questions

What does the BMW B58 silicone intake hose replace? The MMX BMW B58 silicone intake hose replaces the factory plastic bellows pipe between the airbox and the turbo inlet. The OEM pipe includes an accordion bellows section and an upper resonator that create turbulence and restrict airflow; the MMX silicone hose removes both, providing a smooth, direct airflow path to the turbo.
Does the BMW B58 silicone intake hose work with the stock airbox? Yes. The MMX silicone intake hose is compatible with the standard OEM airbox, the MMX air intake system, and most popular aftermarket intake configurations for the B58. It works as a standalone upgrade or as part of a staged intake build.
Is this a worthwhile upgrade without other intake modifications? Yes. Fitted with the standard airbox, the MMX B58 silicone intake hose still removes the OEM restrictions and improves both airflow and induction sound noticeably. The gains increase further when paired with a high-flow air filter or aftermarket intake system, but the hose delivers real improvement as a standalone upgrade.
Will the hose deform under boost or heat? No. The reinforced multi-ply silicone construction includes embedded rigidity elements specifically to prevent deformation under load and heat. The hose also allows just enough compliance to accommodate natural engine movement without stressing the intake connections.
How difficult is installation? Installation is Level-1 difficulty and takes approximately 10 minutes with basic hand tools. The hose is a direct replacement for the factory unit using the same connection points. No cutting or permanent modification is required.

About MMX Performance

MMX Performance is a UK-based specialist in performance parts for BMW and MINI vehicles, crafting high-quality upgrades that blend precision engineering, rigorous testing, and motorsport heritage. Driven by enthusiast culture, MMX designs its products in the UK and puts them through track validation to ensure durability, fitment accuracy, and on-road performance. Their catalog spans drivetrain components, spacers, hardware, and chassis enhancements, all tailored to elevate both the driving experience and visual appeal of BMW and MINI models.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

MMX Silicone Intake Hose Fxx BMW M140i, M240i, 340i, and 440i (with B58 engine) [MMR16-0501]

Guaranteed Safe Checkout

MMX Silicone Intake Hose for Fxx BMW M140i, M240i, 340i, and 440i (B58 Engine)

Features

Applications

Notes

Frequently Asked Questions

About MMX Performance

Reviews