




Form Lighting FL0042 LED Sidemarkers upgrade 2015–2023 Ford Mustang with modern, high-intensity full-strip LED illumination and smoked stealth styling. Designed as direct plug-and-play OE replacements, they enhance visibility, durability, and aesthetics while eliminating factory dullness. Built with premium materials, they deliver long-lasting performance, clean fitment, and aggressive exterior customization appeal.
Top Features
Vehicle Fitment
Physical products may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed, it is non-refundable.
Digital Products, such as MPT Tunes and HP Tuners Credits, are not covered by this.
Please see our Refund Policy or contact an MPT Expert for more information.
MPT is proud to offer free shipping on most orders over $149.
Free Shipping applies only to the contiguous United States. Shipping and handling charges will apply to all orders outside the contiguous US, with the buyer being responsible for any duty fees or taxes their home country may charge to import goods.
With Free Shipping, we will choose the best shipping method for the order. We use all major carriers, including USPS, FedEx, UPS, and DHL.
Items not stocked at our location may incur additional lead-time or charges.
Please our Shipping Policy for more information.


Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) is a California law that applies to all companies selling products in California. Proposition 65 requires warnings if a product contains any listed chemical present above very low levels that are known to cause cancer, birth defects or other reproductive harm. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a product safety law, but rather a “right-to-know” law. Businesses are required to provide warnings to comply with Proposition 65. These warnings are required to be in place for all products offered for sale in California.
There are over 800 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including Automotive Performance products, and warnings can be seen posted throughout California in a variety of establishments such as hotels, restaurants, automobile dealerships/repair shops, and retail stores just to name a few.
To comply with the requirements of Proposition 65, this warning is present on all products sold by MPT.
More detailed information can be found by going to:
https://www.p65warnings.ca.gov/
Form Lighting FL0042 LED Sidemarkers deliver a dramatic styling upgrade for the 2015-2023 Ford Mustang, transforming the factory side lighting into a modern, high-output LED signature. Designed as direct-fit OE replacements, these premium sidemarkers replace dull factory units with a sleek smoked-lens appearance and full-strip LED illumination for a bold, stealth-inspired look. Built for enthusiasts seeking both style and reliability, this upgrade enhances visibility while refining the exterior aesthetic with a clean, custom performance appearance that stands out on the road or at car shows.
Key Features
Benefits
Product Specifications
Install Difficulty level
Installation is considered very easy with a plug-and-play design requiring no modifications. Average installation time is approximately 30 minutes using only basic hand tools. Factory housings are removed and replaced directly with no cutting, splicing, or coding required, making this a quick visual upgrade suitable for most skill levels.
Vehicle Fitment
This product is engineered to fit Ford Mustang models from 2015 through 2023, including all trims and engine variants such as 2.3L EcoBoost, 3.7L V6 (select early models), and 5.0L V8 GT applications. Designed as a universal fit across the S550 platform sidemarker locations, it maintains factory compatibility for a wide range of Mustang configurations without adjustment.
For questions about this product or to report description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.
MPT is proud to offer free shipping on most orders over $149.
Turnaround Times:
Special Considerations:
A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.
MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.
Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.
For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.
The customer is responsible for all shipping charges incurred during the return process.
Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
•After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.
HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.
Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.
nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.
MPT Decals are Non-Refundable, once they have been received by the customer.
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019-2020 | Ford | Mustang | Bullitt |
| 2015-2023 | Ford | Mustang | EcoBoost |
| 2015-2023 | Ford | Mustang | EcoBoost Premium |
| 2015-2023 | Ford | Mustang | GT |
| 2015 | Ford | Mustang | GT 50 Years Limited Edition |
| 2015-2023 | Ford | Mustang | GT Premium |
| 2021-2023 | Ford | Mustang | Mach 1 |
| 2015-2020 | Ford | Mustang | Shelby GT350 |
| 2015-2020 | Ford | Mustang | Shelby GT350R |
| 2020-2022 | Ford | Mustang | Shelby GT500 |
| 2015-2017 | Ford | Mustang | V6 |
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The process was much simpler than I expected. The tunes are awesome, and easy to load. It truly does make the truck into what it should be. The only issue is you may go through tires faster.
MPT is great.
Had an ** tune on my 2014 f150 5.0 and put on some tires that were shorter, Ii had to change the tire size and ** stopped offering support for my tune so I switched to MPT everything has been very straightforward. I have been through a few revisions of tunes to get it dialed to my needs but my truck now shifts better, has more power, and runs smoother than it every did with my ** tune. I purchased both the adaptive octane performance trans tune and the 91 performance and both are worlds better than the **. I also like the ability to adjust the idle rpm, tires size, and gear ratio from the SCT tuner before i install the tune, this is something i could not do with **. The customer support is also much better and no bickering or hostility like there was with ** and I appreciate that and the patience of Ross at MPT very much. Would definitely recommend them for your tuning needs! God bless you all at MPT
Will post a video of the acceleration on my youtube soon @Bless-edisYeshuaHamashiach
We have two Can Am Renegade 850's in a 16' enclosed trailer that we pull with this truck. The transmission couldn't make up its mind which gear it wanted, also has larger tires on. The MPT TUNE set everything perfect. Rips awesome! Pulls trailer great! Service is absolutely amazing with all my questions. Installing cold air intake next from Morepowertuning.com
Jose at MPT not only helped me every step of the way he fine tuned my ROUSH F150 to the way it should have come off the assembly line with a historic name on the grill like ROUSH! 0-60 is 1.3 sec faster and top end never stops!!! The historic Ford 10 speed transmission “searching” has also been dealt with. Thank you MPT for making my ROUSH F150 fast
Procharged 2014 mustang 3.7, MPT did a fantastic job remote tuning. I will be back for future tunes for future mods.