The bulb type depends on the TL’s headlight configuration. If your car has HID headlights, you’ll likely need D2S bulbs for the low beams; if it uses traditional halogen headlights, the low beams are usually 9006 and the high beams 9005, with fog lights typically H11.
Headlight configurations for the 2008 Acura TL
The 2008 TL lineup offered two main headlight configurations. The exact bulb numbers depend on whether your vehicle came with HID headlights or halogen headlights from the factory.
- Halogen headlight setup (non-HID): low beam = 9006; high beam = 9005; fog lights = H11.
- HID headlight setup (optional on some trims): low beam = D2S (paired with a ballast); high beam typically uses a standard halogen bulb such as 9005; fog lights (if present) are usually H11, though variations can occur by package.
Understanding your specific configuration helps you purchase the correct bulbs and avoid mismatches with ballast-equipped HID systems.
How to determine your exact bulb type
Check the owner's manual, inspect the headlight housing, or remove the bulb to read the stamped part number. HID systems use ballast and D2S/D2R-type bulbs rather than standard halogen bulbs, which clarifies whether you need D2S or a halogen 9006/9005 pair.
Replacement tips
When replacing bulbs, handle halogen bulbs with care—avoid touching the glass with bare skin. Disconnect the battery and ensure the headlight assembly is cool before you begin. After installation, verify the headlight aim and alignment.
Summary
For a 2008 Acura TL, bulb choices vary by configuration. Halogen-equipped models use 9006 for low beams, 9005 for high beams, and H11 for fogs. HID-equipped models use D2S for the low beams, with high beams often powered by a standard halogen bulb (commonly 9005). Always confirm your exact setup via the owner's manual or by inspecting the bulb assembly to ensure you purchase the correct bulbs for your vehicle.