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2018 Lincoln MKX Bulb Size Chart

Bulb sizes may vary by trim, factory lighting package, region, production date, and previous modifications. Verify the bulb number on your existing bulb before buying.

Last database update: May 2026. Manual review status: Not yet manually reviewed.

Verify before buying: check the bulb number printed on your existing bulb, confirm your trim and factory lighting package, and review the seller's fitment notes.
Disclosure: We may earn a commission from links marked Affiliate. Unmarked retailer links may be plain search links. Always verify bulb fitment before purchasing.

2018 Lincoln MKX Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
Low BeamD3S—Factory HID packageHIDHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

AmazoneBay
High BeamD3S—Factory HID packageHIDHigh
Pending

Verify trim, factory lighting package, and the bulb number on the existing bulb.

AmazoneBay
Turn Signal Front7440NA—Multiple listed optionsHalogenMedium
Pending

Multiple listed options; confirm the bulb in your housing.

Amazon

2018 Lincoln MKX Fitment Notes

Across the 2007-2018 production range, our database shows changes in the listed Low Beam, High Beam, Turn Signal Front positions. Use the chart above for this 2018 model, then confirm the bulb number in your vehicle before buying.

Known fitment limitations

  • factory HID or LED packages may use different parts
  • fog lights may depend on equipment package
  • aftermarket headlight assemblies may use different bulbs
  • regional models and production-date splits may differ

See an incorrect bulb size? Submit a correction.

How do the 2018 Lincoln MKX's bulbs compare to other years?

The 2018 Lincoln MKX uses the same bulbs as the 2017 model.

This bulb configuration covers the 2016–2018 model years. ← 2017

Finding the best installation guide...

Other MKX Years

20172016201520142013201220112010200920082007

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Frequently Asked Questions

Our database lists D3S for the 2018 Lincoln MKX low beam headlights. Verify the bulb number on your existing bulb and confirm your trim or factory lighting package before buying.

Our database lists D3S for the 2018 Lincoln MKX high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 2018 Lincoln MKX can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed D3S size against the bulb in the housing before choosing a replacement or upgrade.

The 2018 Lincoln MKX does not have a fog light bulb listed in our current database. If your vehicle has fog lights, verify the bulb in the housing or owner's manual before buying.

The 2018 Lincoln MKX uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

LED upgrades are available for many D3S applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as D3S, and verify the factory housing before buying.

No — the 2018 Lincoln MKX uses the same bulb sizes as the 2017 model. This configuration has been consistent across the 2016–2018 generation.

The 2018 Lincoln MKX is the last year in the 2016–2018 generation to use the D3S bulb for the low beam headlight.

Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed D3S low beam size on the existing bulb or owner's manual, then follow the service procedure for your exact trim.

Rules for LED headlight retrofits vary by location and by housing type. Avoid products that create glare or lack road-use compliance claims, and check local requirements before using an LED conversion on public roads.

Replacement cost depends on bulb technology, brand, and labor access. HID D3S capsules usually cost more than common halogen bulbs. Check seller fitment notes before comparing prices.

Halogen bulbs and LED replacements differ in output, heat behavior, beam pattern, and electronics. A correct bulb code does not guarantee a correct LED beam pattern, so verify physical fit and seller compatibility notes for the 2018 Lincoln MKX.