ZL1 Addons 2018-2023 Ford Mustang GT Stealth Diffuser
This all new Mustang 18-23 Diffuser is now available for all quad-tip GT models. This products comes with an aluminum belly pan to smooth and diffuse […]
ZL1 Addons 2018-2023 Ford Mustang GT Stealth Diffuser
This all new Mustang 18-23 Diffuser is now available for all quad-tip GT models. This products comes with an aluminum belly pan to smooth and diffuse the air coming out from under the car that is attached to our HDPE outward-facing panel that has an automotive finish. We offer this product as a one piece or three piece design, please make sure you select the right product below.
This product is functional and will diffuse the air properly from the differential to the rear of the vehicle unlike other brands. This product is designed to bolt up to the factory valance as an addon.
Made in the USA!
Install Guide:
SKU: 23154001
Product Fitment:
- Mustang 18-23 GT, GT PP1, GT PP2, GT Premium with quad tip exhaust. (Vehicle must have quad tip exhaust with factory valance for this product to mount properly.)
Product Finish:
- Standard Aluminum – This product will have an HDPE main diffuser and fins with a raw aluminum* attachment plate.
- Black Powder Coat Aluminum – This product will have an HDPE main diffuser and fins with a black powder coated aluminum attachment plate.
Shipping:
- This product is built to order and will take 5-7 business days to build and prep for shipment. Black powder-coated panels have a 7-10 business day build lead time.
*Note:
- The aluminum that attaches the diffuser to the car is NOT a fine finished piece, it will have fine marks and scratches obtained during manufacturing. This part of the diffuser is not viewable when the car is sitting on the ground.
- The primary diffuser fins will ship unattached due to sizing and shipping rates, a Philips head screw drive or drill will be needed to assemble just the fins to the main panel. Holes are already in place to line the product up.
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Function Factory Performance takes “customer service” very personally. We understand that finding the right parts can be overwhelming. Education and awareness are the principles that keep us ahead of the curve. Let us make this experience simple, easy, and excellent, so without hesitation, give us a call at (480) 576-8606. Feel free to direct message on our live chat or CLICK HERE to contact us via email.
Make sure to follow us on Instagram @FFPerformanceAZ and YouTube.
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Frequently Asked Questions
For made-to-order or specialty items (like carbon fiber parts or custom builds), the turnaround can take up to 8 weeks — perfection takes time.
Either way, we’ll keep you updated so you know exactly when your parts are leaving the pit lane.
If your order ships via freight, you’ll get a separate email with a direct link to the carrier’s tracking page — easy and stress-free.
If your shipment is lost, just email or call us — we’ll help track it down and guide you through the next steps to make it right.
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First Class Customer Service
Customer service is our top priority. We know that finding the right parts can be overwhelming, so we’re here to make the process smooth and enjoyable. We’re always ahead of the curve with our commitment to education and awareness. Let’s make this experience simple and awesome together! Don’t hesitate to call us at +1 805 267 9762 or click here to reach us via email.
Make sure to follow us on Instagram: @FFPerformanceAZ and Youtube.
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