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2017-2019 Ford F-350 | Bulb Size Chart (Headlights, Fogs & More)

Last updated: Janaury 25, 2023

In this guide, we'll help you quickly and easily find the replacement bulb size(s) you need for your 2017, 2018, and 2019 Ford and F350 Super Duty (4th Generation). From the low and high beams to the reserve lights and everything in between.

This guide covers all sub-models and trims (King Ranch, Lariat, Platinum, XL, and XLT). During these 3 years, the F350 and F350 Super Duty came with either factory halogen bulbs or LED. We make the distinction below in our size guide.

We organized all the bulbs into 5 lighting categories with easy-to-read charts. Select any of the categories below to jump right to the bulb size chart you're looking for:

Headlight Bulb Sizes
Fog Light Bulb Sizes
Brake & Tail Light Sizes
Turn Signal & Marker Bulb Sizes
All Other Bulb Sizes
Bulb Size Summary
Upgrading Your Bulbs (Popular!)
Installation Video
Owner Manuals
FAQ's

💡 TIP: Did you know that you can upgrade your headlight and fog light bulbs on your Ford F-350? Get up to 300% more light with LED or HID bulbs. Learn more below the size charts!

️⭐ NOTE: This guide only applies to 2017, 2018, and 2019 F350 Super Duty with the original factory (OEM) assemblies. If you have aftermarket headlights, fog lights, brake lights, etc. you will need different bulb sizes as per the manufacturer's specifications.

🎯 ACCURACY: If you notice any inaccuracies or missing information, please let us know so we can update the guide. Providing accurate and complete information is important to us and our readers.

🚧 IMPORTANT: Automotive light bulbs are vehicle-specific! Follow this guide, review your owner's manual or contact your dealership to make sure you're buying the right bulbs to avoid fitment issues.

2017 to 2019 Ford F-350 - Headlight Bulb Sizes (Low & High Beam)

Position	Bulb	Type	Upgrade Avail.
Low Beam Headlights (Dims)	H13 or LED	Halogen	Yes
High Beam Headlights (Brights)	H13 or LED	Halogen	Yes

Year Range 2017, 2018, and 2019.
Not sure about the difference between headlight low beams and high beams? Learn More.
Factory LED lights cannot be changed or upgraded. Please visit an authorized dealer for service.

2017 to 2019 Ford F-350 - Fog Light Bulb Sizes

Position	Bulb	Type	Upgrade Avail.
Fog Light	9140	Halogen	Yes

Year Range 2017, 2018, and 2019.

2017 to 2019 Ford F-350 - Brake & Tail Lights Bulb Sizes

Position	Bulb	Type	Upgrade Avail.
Brake Light (Rear)	3156 or LED	Halogen	Yes
Brake Light (High-Mounted)	912 (921)	Halogen	Yes
Reverse Light*	7440 or 3156	Halogen	Yes
Tail Light	3156 or LED	Halogen	Yes

Year Range 2017, 2018, and 2019.
Factory LED lights cannot be changed or upgraded. Please visit an authorized dealer for service.

*Compare to original to see which bulb your vehicle requires.

2017 to 2019 Ford F-350 - Turn Signal & Marker Bulb Sizes

Position	Bulb	Type	Upgrade Avail.
Turn Signal Bulb (Front)	7440 or LED	Halogen	Yes
Turn Signal Bulb (Rear)	3156 or LED	Halogen	Yes
Parking Light*	7440 or 4257	Halogen	Yes
Side Marker (Front)	194 or LED	Halogen	Yes
Side Marker (Rear)	3156 or LED	Halogen	Yes

Year Range 2017, 2018, and 2019.
Factory LED lights cannot be changed or upgraded. Please visit an authorized dealer for service.

*Compare to original to see which bulb your vehicle requires.

2017 to 2019 Ford F-350 - All Other Bulb Sizes

Position	Bulb	Type	Upgrade Avail.
Map Light	LED	LED	No
Dome Light	LED	LED	No
Engine Compt. Light	LED	LED	No
License Plate Light	194 or LED	Halogen	Yes
Trunk/Cargo Light	912 (921)	Halogen	Yes

Year Range 2017, 2018, and 2019.
Factory LED lights cannot be changed or upgraded. Please visit an authorized dealer for service.

Ford F350 LED/HID Bulb Size Summary

Year Range	2017, 2018, 2019
Low Beam Headlights	H13
High Beam Headlights	H13
Fog Light	9140
Brake Light (Rear)	3156 (3157)
Brake Light (High-Mounted)	912 (921)
Reverse Light*	7440 or 3156
Tail Light	3156 (3157)
Turn Signal Bulb (Front)	7440 (7443)
Turn Signal Bulb (Rear)	3156 (3157)
Parking Light*	7440 or 4257
Side Marker (Front)	194 (168)
Side Marker (Rear)	3156 (3157)
License Plate Light	194 (168)
Trunk/Cargo Light	912 (921)

All trims: King Ranch, Lariat, Platinum, XL, and XLT.

*Compare to original to see which bulb your vehicle requires.

Upgrade Your Headlight Bulbs On Your 2017-2019 Ford F-350

Looking to improve the lights on your 2017 to 2019 Ford F-350 with better, brighter, and more durable lighting? At XenonPro.com, we developed LED and HID bulbs that fit right into your vehicle. With the same design and plugs, our bulbs are incredibly easy to install and will improve your light output by up to 300%.

Discover our award-winning lighting products backed by our Lifetime Warranty:

Check out some of our most popular guides:

Discover some related topics:

Headlight Bulb & Assembly Replacement Video - 2017-2019 Ford F-350 (4th Generation)

Check out this great video on how to change your headlight bulbs and assemblies on your 2017 to 2019 Ford F-350. This video is for a 2020 F250 but it will work for this truck as well. You'll need the following tools to complete this job:

Flathead screwdriver
10mm socket, ratchet, and extension (or a drill)
Latex gloves
Trim removal tool (optional)

Owner Manuals 2017 to 2019 Ford F-350

Need more information about bulb sizes, how to change the bulbs, or simply need the owner's manual? Find it below:

FAQ

Can this guide be applied to a 2018 Ford F-350?

Yes. This guide applies to all sub-models and trims (King Ranch, Lariat, Platinum, XL, and XLT) for the 2017-2019 Ford F-350.

What type of bulbs do you recommend for my 2017-2019 Ford F-350?

If you do a lot of nighttime driving or have difficulty seeing at night, we recommend upgrading from halogen to either LED or HID bulbs. They will produce more light and last longer than replacement bulbs.

Discover how you can put LED or HID bulbs in your factory headlights

Can I change the bulbs on my 2017-2019 F-350 myself?

Yes, so long as they are halogens. Changing halogen bulbs is quite easy for the most part. We strongly advise finding How-To videos online for the specific bulb(s) you wish to change and consult the Owner's Manual for additional help.

If your vehicle has factory LEDs, you will need to visit your dealership to have them changed.

I purchased aftermarket assemblies for my F-350, can I use this guide?

No. Aftermarket assemblies typically use different bulb sizes. Consult with the assembly manufacturer for the right bulb size(s).

Sources:

Disclaimer: The information contained on this page is provided free of charge to our visitors. It was prepared to the best of our abilities and with all the information available to us at the time of writing. We reserve the right to change, remove or update any information contained on this page at any time and without notice to improve its accuracy. The most reliable method to determine the bulb size is by pulling your actual bulb(s) and reading the part number indicated directly on the bulb. The information compiled on this page comes with no guarantees or warranties.