What Size Bulb for a 2019 Hyundai Tucson?

The 2019 Hyundai Tucson generally uses H7 bulbs for low-beam headlights, H7 or H1 for high beams (depending on trim and market), and 1157/2357 or 7443-type bulbs for most exterior signal and brake lights, but exact sizes depend on trim level (SE, Value, SEL, Sport, Limited, Ultimate) and whether your SUV is equipped with projector or LED headlights. Below is a detailed breakdown and guidance on how to confirm the correct bulb types for your specific vehicle.

Why Bulb Size Varies on the 2019 Hyundai Tucson

The 2019 Tucson was sold in multiple trims and with different lighting packages in various regions. U.S. models differ from some European or Asian versions, and higher trims may have factory LED setups that don’t use traditional replaceable “bulbs” for certain functions. As a result, bulb sizes for low beams, high beams, fog lights, and DRLs can change with trim and equipment.

Headlight Bulb Sizes

Low-Beam Headlights

For most 2019 Hyundai Tucson models with halogen projector headlights in North America, the low-beam bulb is typically an H7 halogen. This applies to lower and mid-level trims without factory LED headlights.

The following list summarizes the typical low-beam headlight bulb type by configuration. Always confirm against your manual or bulb catalog, as regional variations exist.

• Halogen projector low beam: H7
• Factory LED low beam assemblies (if equipped): Integrated LED module (no standard replaceable halogen bulb size)
• Aftermarket LED or HID conversions: Usually use an H7-based kit, but must match projector housing and be road-legal in your area

In practice, many Tucson owners find “H7” stamped on the dust cover or on the existing bulb, but LED-equipped trims will not show a halogen bulb type because the assembly is sealed with built-in LED modules.

High-Beam Headlights

High-beam bulb type can differ depending on whether the vehicle has a dual-function projector (low/high in one) or separate reflectors. Many U.S. 2019 Tucson trims use H7 for high beams as well, but some regions or packages may use H1 or integrated LEDs.

This list outlines common high-beam setups and bulb types seen in 2019 Tucson models.

• Common halogen high beam (separate reflector, many U.S. trims): H7
• Alternative halogen high beam (in some markets): H1
• LED headlight package: High beam often integrated in LED assembly, no conventional bulb size

Because of these differences, the high beam is the area where you are most likely to see variation, making it essential to check your existing bulb or consult a trusted bulb lookup tool by VIN or trim.

Daytime Running Lights (DRL) and Parking Lights

On many 2019 Tucson models, DRLs are built into the headlight assembly as LED strips, while parking and front position lights may still use small incandescent or wedge-type bulbs.

The following list gives a generalized view of DRL and parking light types found on the 2019 Tucson.

• DRL (many trims): Integrated LED in headlamp assembly (no conventional bulb size)
• Front parking/position lights (if separate): W5W / 168 / 194-type small wedge bulbs (varies by region)

Because DRLs are often LED and sealed, you usually replace the entire assembly if the LEDs fail, whereas parking bulbs are normally user-serviceable and labeled in the owner’s manual.

Fog Light Bulb Sizes

The 2019 Hyundai Tucson’s fog lights, when equipped, are typically halogen projector units, though some higher or region-specific trims may integrate them with LED strips or omit them altogether.

The list below covers commonly reported fog light bulb types for 2019 Tucson models.

• Conventional halogen fog lights (most trims that have fogs): H8, H11, or 9145/9005-style bulbs (exact spec varies by market and housing)
• LED fog lights (if equipped from factory): Integrated LED module, no separate bulb

Because fog light bulb specifications are among the most variable, checking the part number on the removed bulb or using a VIN-based parts lookup is by far the most reliable approach for this position.

Rear Bulb Sizes: Brake, Tail, Turn, and Reverse

Tail and Brake Lights

Most 2019 Tucson models use conventional dual-filament bulbs for rear combination brake and tail lights, though some trims or markets may have LED clusters.

The following list summarizes typical rear tail/brake bulb types used on many 2019 Tucsons.

• Brake/tail combination (outer lamp, common setup): 1157 or 2357 dual-filament bulb (or equivalent P21/5W in some markets)
• LED rear clusters (if equipped): Integrated LED boards with no standard bulb replacement

In North America, parts catalogs often list 2357 or 1157-type bulbs; in Europe, you may see P21/5W. The socket type (BAY15d dual-contact) is usually the same, but the exact designation may differ by standard.

Rear Turn Signals

Rear turn signals are commonly separate bulbs in the same cluster, typically amber or clear bulbs behind amber lenses, depending on regional regulations.

The list below covers commonly used bulb types for rear turn signals in the 2019 Tucson.

• Rear turn signal bulb (many markets): 7440 or PY21W single-filament bulb
• Integrated LED rear turn (on select trims/regions): No separate bulb; LED module only

The bulb base and code can vary, so verifying via your owner’s manual or existing bulb is the safest course before buying replacements or upgrading to LEDs.

Reverse (Backup) Lights

Backup light bulbs on the 2019 Hyundai Tucson are typically small, high-intensity clear bulbs housed in the tailgate or rear lamp cluster.

The next list outlines the most common reverse light bulb types on this model year.

• Reverse/backup light (typical): 921 / W16W wedge-type bulb
• LED backup light assemblies (less common, region/trim dependent): Integrated LED, non-bulb service

These bulbs are among the easiest to upgrade to LED for better brightness, but you should confirm the base type and ensure any aftermarket LED fits within the housing and is CAN-bus compatible if your vehicle monitors bulbs.

Front and Side Turn Signal Bulbs

Front Turn Signals

Front turn signal bulbs on the 2019 Tucson vary with headlamp design and the presence of DRLs. Many halogen headlight assemblies use a standard wedge or bayonet-style bulb for the front turn signal

The list below summarizes common front turn signal bulb types for 2019 Tucson models.

• Front turn signal (in headlamp housing, many trims): 7440 / WY21W single-filament amber bulb
• LED turn signal (if included with LED headlamp package): Integrated LED, not a replaceable bulb

Because turn signals are safety-critical, ensure any replacement matches the required color (amber) and brightness, and test flash rate after installation to avoid hyperflashing with LED upgrades.

Side Marker and Side Repeater Bulbs

Side markers or mirror-mounted repeaters help improve visibility of turn signaling from the side. The specific bulb type again depends on region and equipment.

The following list outlines typical side marker/side repeater bulb arrangements.

• Side marker (bumper or fender, if separate): 194 / W5W small wedge bulb
• Mirror-mounted turn signal repeaters (many trims): LED modules integrated into mirror assembly

In practice, most owners will only need to service bumper/fender side markers, as mirror repeaters are frequently sealed LED units requiring assembly replacement if they fail.

Interior Bulb Sizes (Cabin and Cargo Area)

Inside the 2019 Hyundai Tucson, most lighting uses small festoon or wedge-style bulbs that many owners choose to upgrade to LED for a brighter, whiter light.

The list below covers typical interior bulb types for this model year. Exact types may vary slightly by trim with or without a panoramic sunroof.

• Front map/reading lights: 194 / W5W wedge or small festoon (varies slightly by housing)
• Dome light (center overhead): Festoon bulb, often 31 mm or 32 mm
• Rear passenger dome/map lights: Festoon or 194 / W5W, depending on configuration
• Cargo area light: Festoon bulb (commonly 31–36 mm range)
• Glovebox light (if equipped): 194 / W5W wedge-type bulb

These interior bulbs are generally straightforward to replace, but panel removal can be delicate; using a plastic trim tool helps avoid damage when accessing lenses and housings.

How to Confirm the Correct Bulb Size for Your 2019 Tucson

Although the bulb sizes listed above reflect common configurations, Hyundai’s running production changes, regional standards, and trim-level differences mean you should always confirm exact types before buying replacements.

The following list outlines practical steps to verify the correct bulb sizes for your specific vehicle.

1. Check the owner’s manual: Look for the “Bulb Replacement” or “Specifications” section; it often lists bulb types and wattages by position.
2. Inspect the existing bulb: Remove the current bulb and read the code printed or etched on the base or glass (e.g., H7, 1157, 921).
3. Use a VIN-based parts lookup: Hyundai dealer parts systems and reputable online catalogs can show the correct bulb type when you enter your VIN.
4. Consult the label on the headlamp housing: Many headlight and fog light housings have small markings near the bulb access cover indicating the bulb type.
5. Verify compatibility for LED upgrades: If you switch from halogen to LED, choose bulbs labeled as compatible with your specific base type and check for CAN-bus or anti-flicker features if needed.

By following these steps, you greatly reduce the chances of buying the wrong bulbs or damaging the lighting system, and you’ll be better prepared if you choose to upgrade from halogen to LED or higher-performance halogen options.

Legal and Safety Considerations

Changing bulb type or upgrading to LED or HID can affect beam pattern, glare, and legal compliance. While many aftermarket options are marketed broadly, not all are road-legal in every jurisdiction, and improper installation can compromise safety.

The list below highlights key safety and regulatory points to keep in mind when replacing or upgrading bulbs on your 2019 Tucson.

• Match the original bulb type and wattage: Exceeding wattage can overheat wiring and housings, and may void warranty or violate regulations.
• Ensure proper beam alignment: After replacing headlight bulbs, check and adjust headlight aim if needed to avoid blinding oncoming traffic.
• Use road-legal LED/HID kits: Some regions restrict retrofitting LEDs or HIDs into halogen housings; check local laws and look for DOT/ECE-compliant products where applicable.
• Check for dash warnings or hyperflash: LED turn signals may cause rapid flashing or bulb-out warnings; load resistors or CAN-bus compatible bulbs may be required.
• Handle bulbs correctly: Avoid touching halogen bulb glass with bare fingers to prevent hot spots and premature failure.

Following these guidelines helps maintain both safety and compliance, ensuring that replacements or upgrades don’t turn into costly or hazardous mistakes.

Summary

For a 2019 Hyundai Tucson, the low beams are commonly H7 halogen, high beams are often H7 or sometimes H1 (or integrated LEDs on higher trims), fog lights are typically H8/H11-type halogen where fitted, and most rear and interior lights use standard 1157/2357, 7440, 921, 194/W5W, and festoon bulbs. However, factory LED packages and regional specifications mean there is no single universal set of bulb sizes for every 2019 Tucson. To be certain, owners should cross-check the owner’s manual, inspect existing bulbs, or use a VIN-based parts lookup before purchasing replacements or LED upgrades.