Cadillac XT4 Bulb Sizes
2019 Cadillac XT4 stores 16 bulb-chart rows across 16 lighting positions. Halogen high beam is LED. LED headlight equipment is stored as its own configuration, not as an extra bulb in the halogen lamps.
Stored halogen, HID, Bi-LED, and LED rows are alternative equipment when the chart lists more than one. A vehicle uses one lighting system. Verify the lamps installed before ordering. A halogen bulb is not the replacement for an LED assembly, and an LED conversion is not shown as the OEM halogen bulb.
Lighting positions
- Headlight Bulb High BeamLEDStored position · Integrated LED assemblyView on Amazon
- Headlight Bulb Low BeamLEDStored position · Integrated LED assemblyView on Amazon
- Back Up Reverse Light Bulb921Stored position · Halogen designationView on Amazon
- Brake Light BulbLEDStored position · Integrated LED assemblyView on Amazon
- Center High Mount Stop Light BulbLEDStored position · Integrated LED assemblyView on Amazon
- Cornering Light BulbLEDStored position · Integrated LED assemblyView on Amazon
- Daytime Running Light BulbLEDStored position · Integrated LED assemblyView on Amazon
- License Plate Light BulbLEDStored position · Integrated LED assemblyView on Amazon
- Parking Light Bulb(with LED turn Signals)LEDStored position · Integrated LED assemblyView on Amazon
- Parking Light Bulb(without LED turn Signals)7444NAStored position · Halogen designationView on Amazon
- Side Marker Light Bulb FrontLEDStored position · Integrated LED assemblyView on Amazon
- Side Marker Light Bulb RearLEDStored position · Integrated LED assemblyView on Amazon
- Tail Light BulbLEDStored position · Integrated LED assemblyView on Amazon
- Turn Signal Light Bulb Front(with LED turn Signals)LEDStored position · Integrated LED assemblyView on Amazon
- Turn Signal Light Bulb Front(without LED turn Signals)7444NAStored position · Halogen designationView on Amazon
- Turn Signal Light Bulb RearLEDStored position · Integrated LED assemblyView on Amazon
Choose a lighting position to see the stored designation.
Complete bulb chart
| Position | Configuration | Designation | Technology |
|---|---|---|---|
| Headlight Bulb High Beam | Stored position | LED | Integrated LED assembly |
| Headlight Bulb Low Beam | Stored position | LED | Integrated LED assembly |
| Back Up Reverse Light Bulb | Stored position | 921 | Halogen designation |
| Brake Light Bulb | Stored position | LED | Integrated LED assembly |
| Center High Mount Stop Light Bulb | Stored position | LED | Integrated LED assembly |
| Cornering Light Bulb | Stored position | LED | Integrated LED assembly |
| Daytime Running Light Bulb | Stored position | LED | Integrated LED assembly |
| License Plate Light Bulb | Stored position | LED | Integrated LED assembly |
| Parking Light Bulb(with LED turn Signals) | Stored position | LED | Integrated LED assembly |
| Parking Light Bulb(without LED turn Signals) | Stored position | 7444NA | Halogen designation |
| Side Marker Light Bulb Front | Stored position | LED | Integrated LED assembly |
| Side Marker Light Bulb Rear | Stored position | LED | Integrated LED assembly |
| Tail Light Bulb | Stored position | LED | Integrated LED assembly |
| Turn Signal Light Bulb Front(with LED turn Signals) | Stored position | LED | Integrated LED assembly |
| Turn Signal Light Bulb Front(without LED turn Signals) | Stored position | 7444NA | Halogen designation |
| Turn Signal Light Bulb Rear | Stored position | LED | Integrated LED assembly |
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.
Questions
What is the Cadillac XT4 low-beam bulb?
2019 Cadillac XT4 stores LED for the halogen low beam. Choose the LED headlight configuration separately when the chart lists one. These are not installed together.
What is the Cadillac XT4 high-beam bulb?
2019 stores LED for the halogen high beam.
Does the 2019 Cadillac XT4 chart include fog lights?
No fog-light bulb is stored for this year. This page does not add one.
What turn-signal bulb does the Cadillac XT4 use?
Halogen-configuration turn signals in 2019 store LED, 7444NA. An LED-headlight configuration can list LED instead of these bulbs.
What brake-light bulb does the Cadillac XT4 use?
Halogen-configuration brake lights in 2019 store LED.
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.
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.
What does the chart store for back up reverse light bulb?
2019 stores 921 for Back Up Reverse Light Bulb.
What does the chart store for center high mount stop light bulb?
2019 stores LED for Center High Mount Stop Light Bulb.
What does the chart store for cornering light bulb?
2019 stores LED for Cornering Light Bulb.
What does the chart store for daytime running light bulb?
2019 stores LED for Daytime Running Light Bulb.
What does the chart store for license plate light bulb?
2019 stores LED for License Plate Light Bulb.
What does the chart store for side marker light bulb front?
2019 stores LED for Side Marker Light Bulb Front.
What does the chart store for side marker light bulb rear?
2019 stores LED for Side Marker Light Bulb Rear.