Ford Focus ST Bulb Sizes
2018 Ford Focus ST stores 15 bulb-chart rows across 15 lighting positions. Halogen low beam is H11. Halogen high beam is H1.
Match the designation printed on the bulb or housing. Stored rows are chart records, not a count of lamps on one vehicle.
Lighting positions
- Fog Light Bulb FrontH8 LEDStored position · LED designationView on Amazon
- Headlight Bulb High BeamH1Stored position · Halogen designationView on Amazon
- Headlight Bulb High Beam and Low BeamD3SStored position · HID capsuleView on Amazon
- Headlight Bulb Low BeamH11Stored position · Halogen designationView on Amazon
- Back Up Reverse Light Bulb921Stored position · Halogen designationView on Amazon
- Brake Light Bulb3157RStored position · Halogen designationView on Amazon
- Daytime Running Light BulbH1Stored position · Halogen designationView on Amazon
- Parking Light Bulb168Stored position · Halogen designationView on Amazon
- Side Marker Light Bulb Front2827Stored position · Halogen designationView on Amazon
- Side Marker Light Bulb Rear194NAStored position · Halogen designationView on Amazon
- Tail Light Bulb3157RStored position · Halogen designationView on Amazon
- Turn Signal Light Bulb Front(Hatchback, Compare to original - Option 1)7440AStored position · Halogen designationView on Amazon
- Turn Signal Light Bulb Front(Hatchback, Compare to original - Option 2)7507Stored position · Halogen designationView on Amazon
- Turn Signal Light Bulb Rear(Hatchback, Compare to original - Option 2)3757AStored position · Halogen designationView on Amazon
- Turn Signal Light Bulb Rear(Sedan, Compare to original - Option 1)3157AStored position · Halogen designationView on Amazon
Headlight Bulb Low Beam
H11. Halogen designation. Stored position.
Catalog match for the stored H11 designation as a halogen designation. A designation match is not a fitment guarantee.
Complete bulb chart
| Position | Configuration | Designation | Technology |
|---|---|---|---|
| Fog Light Bulb Front | Stored position | H8 LED | LED designation |
| Headlight Bulb High Beam | Stored position | H1 | Halogen designation |
| Headlight Bulb High Beam and Low Beam | Stored position | D3S | HID capsule |
| Headlight Bulb Low Beam | Stored position | H11 | Halogen designation |
| Back Up Reverse Light Bulb | Stored position | 921 | Halogen designation |
| Brake Light Bulb | Stored position | 3157R | Halogen designation |
| Daytime Running Light Bulb | Stored position | H1 | Halogen designation |
| Parking Light Bulb | Stored position | 168 | Halogen designation |
| Side Marker Light Bulb Front | Stored position | 2827 | Halogen designation |
| Side Marker Light Bulb Rear | Stored position | 194NA | Halogen designation |
| Tail Light Bulb | Stored position | 3157R | Halogen designation |
| Turn Signal Light Bulb Front(Hatchback, Compare to original - Option 1) | Stored position | 7440A | Halogen designation |
| Turn Signal Light Bulb Front(Hatchback, Compare to original - Option 2) | Stored position | 7507 | Halogen designation |
| Turn Signal Light Bulb Rear(Hatchback, Compare to original - Option 2) | Stored position | 3757A | Halogen designation |
| Turn Signal Light Bulb Rear(Sedan, Compare to original - Option 1) | Stored position | 3157A | Halogen designation |
Replacement check
Read the number on the installed bulb or the housing. Confirm whether the headlights are halogen, HID, or an LED assembly. H11 and H11B are different. 9005 and 9006 are different. This page does not substitute a nearby designation to fill the product list.
Year variations
- 2013–2014 halogen low beam: D8S / H11. 2015: H11.
Questions
What is the Ford Focus ST low-beam bulb?
2018 Ford Focus ST stores H11 for the halogen low beam. Choose the LED headlight configuration separately when the chart lists one. These are not installed together.
What is the Ford Focus ST high-beam bulb?
2018 stores H1 for the halogen high beam.
What fog light bulb does the Ford Focus ST use?
2018 stores H8 LED for fog lights.
What turn-signal bulb does the Ford Focus ST use?
Halogen-configuration turn signals in 2018 store 7440A, 7507, 3757A, 3157A. An LED-headlight configuration can list LED instead of these bulbs.
What brake-light bulb does the Ford Focus ST use?
Halogen-configuration brake lights in 2018 store 3157R.
What does an LED record mean?
A stored part of LED means that configuration is recorded as an LED assembly. It is not a replaceable halogen bulb, and this page does not sell an LED conversion as the OEM bulb for that assembly.
How are HID bulbs handled?
D-series capsules such as D1S or D3S are HID. Exact catalog matches for those positions use HID products, not halogen bulbs.
Can I substitute a nearby bulb number?
No. H11 and H11B stay different. 9005 and 9006 stay different. This page matches the stored designation and does not swap in another bulb to fill the product list.
Does a catalog match guarantee the bulb fits?
A designation match means the product is filed under that bulb number and technology. It does not prove the lamp, socket, or vehicle configuration. Check the bulb in the housing before ordering.
How do I verify the replacement?
Read the number on the bulb or the housing, confirm whether the headlights are halogen, HID, or LED, and match that designation. Position names that say “with halogen headlights” or “with LED headlights” are separate configurations.
Does the Ford Focus ST bulb chart change by year?
Bulb rows are stored for 6 years, 2013–2018. This page shows 2018. Choose another year to see that chart. Years are not collapsed into one bulb list.
What does the chart store for back up reverse light bulb?
2018 stores 921 for Back Up Reverse Light Bulb.
What does the chart store for daytime running light bulb?
2018 stores H1 for Daytime Running Light Bulb.
What does the chart store for parking light bulb?
2018 stores 168 for Parking Light Bulb.
What does the chart store for side marker light bulb front?
2018 stores 2827 for Side Marker Light Bulb Front.
What does the chart store for side marker light bulb rear?
2018 stores 194NA for Side Marker Light Bulb Rear.