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Purchase Mirror Wind Diffuser - 991, 981, & 718
  • Mirror Wind Diffuser - 991, 981, & 718 SKU: PK9X1MIRROR

    ★★★★★ ★★★★★ 4.52/5 Stars. (31 Reviews)
  • $99.95


You know that sound that happens when your window is down at speed that makes it feel like your head is going to implode? That’s called wind buffeting. It happens when you’re moving fast, and it’s quite the issue on the newest generation of Porsche Boxster, Cayman, and 911 Carrera models.

Made by AWE Tuning, this diffuser boasts an unobtrusive yet elegant design. Crafted from UV stabilized injection-molded plastic, it complements Porsche styling without calling unwanted attention. Once installed, driving with the windows open will be more comfortable and more quiet. A simple solution to a common gripe among Porsche owners.


  • Simple, quick installation for late production 981, 991, and 718 models for earlier production please see install guide first.
  • The elegant solution for Porsche 981, 991, & 718 wind buffeting
  • UV stabilized injection-molded plastic for the perfect OE-style look
  • Combats buffeting, both on the track and on the street
  • Allows for "single window" down driving without buffeting
  • Perfect OE-like fitment
  • Fits Coupe, Cabriolet and Targa models
  • Includes driver’s side and passenger side fitment

  • Fits all 2013-2019 911 Carrera models (including Turbo & GT3), and 2013-2023 Boxster & Cayman models.

    ★★★★★ ★★★★★
    4.52/5 Stars out of 31 Reviews
    Pages 1   2   3   4
    Worth it! Installation easy on the second door;)
    (Redwood City, CA) | December 17th, 2020
    What most other reviewers said about effectiveness, to wit: buffeting gone, fit/finish very good (one poster mentioned a gap but check your stock triangles before removal and you'll see the oem's have the same gap), worth it. For early 991's , installation isn't hard but it's not plug/play like on newer 911's. Getting the four plastic trip pieces and four bolts off is a breeze after you've done it once. Removing and reinstalling the door is also simple once you've done it once. My only caveat is to make sure you fully connect the blue multiprong door plug before reinstalling the door. There's a little purple plastic hinge that kind of ensures it's fully pushed in, but the first time I did it none of my door/window functions worked. Took door off again and saw that I hadn't pushed the blue plug in all the way. Once it's in, you'll know it by how far in it goes. I could now install two AWE's diffusers in under 10 mins per side. If you're in the Bay Area and want to avoid the learning curve on an early 991.1 (i.e., door removal required), drop by and I'll help you out! I'm in Redwood City (Emerald Hills), Cheers!
    They really do work
    (North Bethesda, MD) | October 30th, 2020
    Completely worth the price, they almost completely remove all buffeting at any speed when the passenger window is closed and the driver's window is open. Unless you have a very early 981, the install takes 5-10 minutes per side, and if you do it right, anyone will think they are OEM. Too bad Porsche doesn't install them from the factory.
    They really do work
    (Lexington Ky) | October 17th, 2020
    I know what your thinking $80 for two pieces of plastic, but I can tell you they really do work. If you want to get rid of the wind buffeting and drive with one or two windows open at any speed this is the only way to do it. I have a 991.1 and before the wind diffusers I needed to open the sunroof with the windows open. They fit well also.
    AWE wind diffuser
    (Bayville, NY) | September 5th, 2020
    Pretty straightforward easy installation and they do lessen the wind buffeting at speed...but way over priced for what they are. Should be no more than $50
    (Tampa) | July 28th, 2020
    I was a bit skeptical. However, it works well. Easy install. It should be a factory OEM option. When I track my 991.2 GT3 they require windows down. The buffeting was intolerable until now. Highly recommend.
    They work
    (NC) | July 3rd, 2020
    Installation easy. Passenger side fits good but not as well as the driver's side. Cuts out wind issues especially at HPDE events.
    Ok but not great
    (Calgary) | May 30th, 2020
    Plastic feels flimsy compared to OEM. Fit was good on driver side, but there is a bigger gap on the passenger side. Installation is very easy. It does reduce buffeting at highway speeds. But, when the widows are up I can now hear a whistling noise. It's not loud but still audible. TBH I'm not sure I'll keep these on or not.
    Worth it
    (Washington) | May 22nd, 2020
    A little pricey for two pieces of plastic but they work. Took just a small amount of finish work to get them to fit perfectly. Had to remove the door panel to install but not difficult and worth the extra effort.
    AWE Wind Diffuser
    (california) | April 4th, 2020
    I received the items in a reasonable amount of time and was accurately filled. Thanks Suncoast. Installation was straight forward, however the company should have included the interior trim tool which would be inexpensive. In the instructions it stated there maybe a gap once installed due to different applications, however the gap was very uneven and varied from side to side. Because of this it doesn't look like an OEM piece. I haven't been able to test its effectiveness but assume it'll work just fine based on the previous reviews.
    window down adventures
    (Denton, TX) | May 10th, 2019
    Excellent product. reduces the sound buffer tremendously almost to zero for my 2014 Cayman S. keep in mind as mentioned 20013-2014 models is not a DUI unless you are a pro, got it done from my indy shop.

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    Mirror Wind Diffuser - 991, 981, & 718
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