What Size Bulbs Does a 2019 Cadillac ATS Use?
Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.
Installation Difficulty
Moderate (Dust covers often present)
Est. Replacement Cost
$50 - $150 (HID System)
What Lighting System Does the 2019 Cadillac ATS Have?
When it comes to nighttime visibility, the 2019 Cadillac ATS relies on an arrangement of 11 specialized bulbs. It features an extensive lighting system powered by premium factory HID/Xenon technology utilizing D3S projector housings for high-intensity output. This model belongs to the late years of the ATS's 2013-2019 production span.
Can You Put LED Bulbs in a 2019 Cadillac ATS?
The 2019 Cadillac ATS is already equipped with factory D3S HID/Xenon headlights. Since HID technology already provides exceptional brightness, we recommend staying with high-quality OEM replacement bulbs rather than attempting an LED retrofit for the primary headlights. However, the LED Fog Light fog lights are typically halogen and are excellent candidates for an LED upgrade to match the color temperature of your HID headlights.
2019 Cadillac ATS Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
| Low Beam | HID-D3S LED | Buy HID-D3S LED → |
| High Beam | HID-D3S LED | Buy HID-D3S LED → |
| Fog Light | LED Fog Light | Buy LED Fog Light → |
| Brake Light | LED Bulb | Buy LED Bulb → |
| Side Marker | 194 | Buy 194 → |
| Turn Signal Front | 7444NA LED | Buy 7444NA LED → |
| Turn Signal Rear | LED Bulb | Buy LED Bulb → |
| License Plate | 2825 | Buy 2825 → |
| Parking Light | 7444NA | Buy 7444NA → |
| Reverse Light | 921 | Buy 921 → |
| Trunk Light | 175 | Buy 175 → |
How do the 2019 Cadillac ATS's bulbs compare to other years?
The 2019 Cadillac ATS uses the same bulbs as the 2018 model.
This bulb configuration covers the 2016–2019 model years. ← 2018
Finding the best installation guide...