All our T4W BA9S LED Bulbs

The T4W is a miniature bulb with a BA9S (9 mm) bayonet base used for sidelights, interior lighting, side repeaters and glove box lighting. In LED, it offers a whiter and brighter light than the original halogen. Our ANGEL White is our best-selling model.

The BA9S base has a diameter of 9 mm with symmetrical pins, while the BAX9S (H6W) has offset pins. The two formats are not interchangeable. Check your original bulb: the T4W is 4 watts and the H6W 6 watts in halogen. Our range LED T4W BA9S covers all needs.

The replacement is immediate: remove the T4W halogen bulb with a quarter turn and insert the BA9S LED in its place. No modification is necessary. If the LED does not light up on the first try, turn it 180° to reverse the polarity.

Yes, our flagship models include CANbus management to avoid dashboard errors. The ANGEL and the ROYAL work without errors on the vast majority of European vehicles.

For sidelights, the ANGEL White is our best-seller thanks to its pure white lighting at 6000K and its compact format. The LOUPE White offers a more concentrated beam. For a warm look, the ROYAL Yellow 3000K adds a vintage touch.

A T4W LED offers a lifespan of about 30,000 to 50,000 hours, i.e. more than 20 times that of a classic halogen bulb. Thanks to their very low consumption (less than 1 W versus 4 W in halogen), BA9S LEDs hardly heat up and preserve the plastics of the optics.