Explore the Bulb Size Chart Below by Scrolling Down
| • International LT | • International Prostar |
Note. Classic sealed-beam models need separate handling from newer pod, HID, LED, or rectangular assemblies.
Accuracy and completeness are very important to us and our followers. If you notice any incorrect or missing information, please let us know so we can update the guide promptly. Your feedback is greatly appreciated.
Depending on the year of the model, some fitments may differ from the ones listed, please verify your sockets before purchasing.
International LT Bulb Size Chart
International Prostar Bulb Size Chart
To address issues like error codes or flickering in your Kenworth after installing LED bulbs, without resorting to programming changes, a specific solution is available. PWM models are designed to rectify these common problems, ensuring smooth and reliable performance of your LED lights.
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Alpha Series PWM Modules (Anti-Flicker)
USD 50.00
Due to manufacturer-specific variations, the information in the table may not be 100% accurate.
If you notice any incorrect information or have additional details to contribute, please feel free to contact us. We truly appreciate all customer feedback and input. support@btslighting.com
FAQs
Some International LED headlights do not use standard replacement bulbs. Factory LED and aftermarket LED headlight assemblies may use integrated LEDs, replaceable modules, or complete assembly replacement.
If your International LT or ProStar has LED headlights, check the headlight assembly information before ordering halogen-style replacement bulbs.
Hyper-flash usually happens when the truck detects the lower electrical load of an LED turn signal bulb and reacts as if the bulb is burned out.
Depending on the International model and signal circuit, you may need a compatible LED bulb, load resistor, LED-compatible flasher, or another approved fix for that application.
The best way to verify the correct International bulb is to remove the original bulb and read the number printed on it. You can also check the headlight or fog light assembly label, VIN, or line set ticket.
For modified trucks, photos of the bulb, connector, socket, and light assembly are often the fastest way to confirm fitment.
INTERNATIONAL HEADLIGHTS
If a full LED headlight assembly is what you’re after, checkout our full headlight assemblies here!
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