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📑 Contents
Ford Mustang S550 facelift bulb size chart
| Position | Bulb | Amazon |
|---|---|---|
| Low beam | Factory LED | |
| High beam | Factory LED |
Data for US-market versions with halogen headlights. Positions not listed are ones we couldn’t confirm: check your owner’s manual or the old bulb.
How to check which bulb your car takes
The Ford Mustang S550 facelift was built from 2018–2023. If your car is from those years, the bulbs in the chart are for US-market versions with halogen headlights. Before you buy, double-check one of these three ways:
- Owner’s manual: the maintenance or “bulb replacement” section has the official chart with every bulb.
- The old bulb: the size (9005, H11, 194…) is stamped on the metal base or the plastic housing.
- The headlight: many headlight assemblies have a label on the back listing the bulb for each light.
Watch out for refreshes: some models change headlights mid-generation. If your car is from a changeover year, check the old bulb.
Still not sure? Our guide on how to find out which bulb your car takes covers the other methods and the most common pitfalls, and the complete car bulb guide brings everything together.
Can you put LED bulbs in the Ford Mustang S550 facelift?
For the low and high beams, LED retrofit bulbs installed in a headlight housing designed for halogen bulbs are not DOT / FMVSS 108 compliant for on-road use in the US, even when the packaging says “DOT approved”. A halogen reflector or projector isn’t built for an LED light source, so the beam pattern can scatter and glare oncoming drivers, and it may cause dashboard warnings or problems at a state inspection. We explain the rules in more depth in our guide on whether LED headlight bulbs are street legal.
If you want more light without the hassle, high-performance halogen bulbs (up to +100% to +200% brighter) are street legal and fit any headlight.
More Ford models
- F-150 12th gen 2009–2014
- F-150 13th gen 2015–2020
- Edge 1st gen 2007–2010
- Edge 1st gen facelift 2011–2014
- Edge 2nd gen 2015–2018
- Escape 2nd gen 2008–2012
- Escape 3rd gen 2013–2019
- Explorer 4th gen 2006–2010
- Explorer 5th gen 2011–2015
- F-150 11th gen 2004–2008
- F-150 14th gen 2021–2023
- Focus 2nd gen (US) 2008–2011
- Focus 3rd gen 2012–2018
- Fusion 2nd gen 2013–2020
- Mustang S197 2005–2012
- Ranger 2nd gen facelift 2001–2011
- Ranger P375 2019–2023
Frequently asked questions
Should I replace headlight bulbs in pairs?
Yes, it’s recommended. Both low beam bulbs get the same use, so if one burns out the other won’t last much longer. Replacing them together keeps one headlight from being brighter than the other and restores the original light output.
Is it legal to put LED headlight bulbs in the Ford Mustang S550 facelift?
Not in the headlights, if they were designed for halogen bulbs: LED retrofit bulbs in halogen housings are not DOT / FMVSS 108 compliant for on-road use. LED bulbs are common and fine for turn signals, parking, license plate and dome lights, as long as they keep the right color.