Porsche 981 Wind Buffet Diffuser

Need a replacement porsche 981 wind buffet diffuser for your Porsche? This 3D-printed part is made to order to replace a broken, worn or missing original piece.

About this part

Porsche 718/981/991 suffer from intense wind buffeting when driving at highway speed with one or both windows down. There are a couple products on the market but I decided to design my own. This has only been test fitted on my personal 2014 981 but it should fit any 718/981/991. The 981_buffet.stl part is meant to be printed with 0% infill and cut apart to form the left and right parts. This is because the finished parts are a bit too flimsy to print separately. I used the printed part just as a fit check and to see if it was effective before continuing on to carbon but you could sand/paint it and use it as the final product. I used 2 outlines and the parts handled 85mph no problem. For those who want a more durable/aesthetic product, I've included 981_buffet_mold.stl. This can be printed and polished to use as a mold for carbon fiber or fiber glass vacuum bag fabrication. Highly recommend printing in ABS as epoxy aggressively sticks to PLA and even with mold release the part may stick. I used 4 outlines and 20% infill and the mold was plenty strong. The lower half can be printed low quality to save time but I recommend switching process to .15 layer height or smaller before the actual part surface starts to minimize smoothing work. To smooth the mold I found this process was pretty fast and effective:.

Compatible vehicles

• Porsche

Always compare with your original part before ordering. Fitment can vary by trim level and production date.

Specifications

How to order

This part is in our catalogue and is printed on request. Send us a request with your vehicle details and we will reply with a price and delivery time.

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Design credit: original design on Thingiverse, licensed CC BY.