Product Description
BMW Performance Air Intake - Mishimoto MMAI-G80-21
BMW Performance Air Intake - Mishimoto MMAI-G80-21
The M3 has undergone significant evolution over the years, with each new iteration bringing something new to the table. From the brilliant widebody E30 of the eighties to the exotic sounding V8-powered E9X, each generation has its own identity but holds true to the goals of providing an amazing driving experience. The G8X gets one of the most potent engines produced by BMW to date, the S58B30, along with an option for AWD. Enhancing the S58 was something we set our sights on soon after acquiring a G80 of our own, the first project being our air intake system. Airbox volume, shape, and construction material all play a part in delivering maximum airflow to your engine. Our engineering team created extremely precise rotational-molded thermoplastic airboxes that eliminate restrictions, supply maximum cool-air entry via two additional ports that open to the wheel wells, and improve engine bay aesthetics. The use of thermoplastic material ensures the air intake system will incur minimum engine bay heat soak and provides unmatched durability for years of service in the harshest environments. Our airboxes were designed using the latest in 3D printing, CAD modeling, and flow bench technology. As a result, we reduced air intake restriction by 13% on the driver-side intake tract and 22.8% on the passenger-side intake tract. For proper filtration, this kit includes dual high-flow oiled air filters which provide improved filter surface area and improved airflow over the stock panel filters. In addition to the flow benefits, our intake system provides a significant amplification of turbocharger spool and bypass valve venting. These enhanced sounds provide a new level of enjoyment, adding to the incredible driving experience you expect from a BMW M-Series. The Mishimoto 2021+ BMW G8X M3/M4 Performance Intake is a complete bolt-on kit and includes all necessary components for an easy installation.
Features:
- Direct fit for 2021+ BMW G8X M3/M4 with 3.0L S58B30
- Reduces intake restriction by up to 22.8-percent for more power potential
- Provides safe operation on a stock ECU tune
- Aggressive intake tone under acceleration
- Additional fresh air ducts draw cool air from wheel wells
- Amplifies turbocharger spool and bypass valve venting
- Rotational-molded airboxes and intake tubes provide optimal airflow, outstanding rigidity, and maximum heat-soak resistance
- CNC-machined aluminum connectors for maximum durability and a leak-free install
- Precision-engineered using the latest in 3D printing, CAD modeling, and flow bench technology
- CNC-Machined passenger-side turbo inlet improves flow and durability
- Installs in less than 1 hour with no need to remove the front bumper or undertray
- Washable oiled filters can be cleaned and refreshed using our Filter Re-Oil Kit for a lifetime of use

Established in 2003, our company has more than 10 years of experience in working toward our goal of providing superior cooling system upgrades for daily drivers, track cars, trucks, and bikes. Mishimoto was created for automotive enthusiasts by automotive enthusiasts. We are a cohesive team that works hard to consistently provide the highest-quality products and service!
Warranty Information
Mishimoto Automotive (“Mishimoto”) warrants its products under this lifetime limited warranty policy (“Warranty Policy”). This Warranty Policy applies solely to: (i) Mishimoto Products purchased directly from Mishimoto or Mishimoto authorized dealers (each a “Mishimoto Product” and collectively, the “Mishimoto Products”) and (ii) the original purchaser of such Mishimoto Product (“Purchaser”). This Warranty Policy is non-transferable and all claims under this Warranty Policy must be accompanied by the original sales receipt. The terms and conditions of this Warranty Policy are subject to change by Mishimoto at any time without notice. Pursuant to the terms and conditions of this Warranty Policy, after submission of a valid claim by a Purchaser and regardless of the condition of the product for which such valid claim is submitted, if it is determined by Mishimoto that such Mishimoto Product was not manufactured to Mishimoto’s advertised specifications or if such claim was submitted pursuant to Mishimoto’s Accident Protection Plan, as described herein, Mishimoto will, at its discretion: (i) repair or replace Purchaser’s original Mishimoto Product; (ii) replace Purchaser’s original Mishimoto Product with the most current available model (if, for example, the original model of the product for which a valid claim has been submitted is not available); or (iii) provide the purchaser with a gift card redeemable at Mishimoto.com in the amount of the original purchase price of the original Mishimoto Product (if, for example, Mishimoto has discontinued support for a Purchaser’s specific application). To submit a claim for a Mishimoto Product under this Warranty Policy, you must: (i) fully and accurately fill out the online form provided below; and (ii) provide Mishimoto with a copy of an original sales receipt indicating that you are the original Purchaser of the Mishimoto Product for which the claim is being submitted (you must also provide the information described in the paragraph of this Warranty Policy titled “Mishimoto Accident Protection Plan” if you are submitting a claim for a Mishimoto Product damaged in an accident). In addition, if requested by Mishimoto, you must also send the Mishimoto Product for which a claim is being made, all transportation expenses prepaid, to Mishimoto.
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