H4 Diode - Retrofitlab

H4 Diode

To connect your ballasts to your H4 feed of your headlight. This is for cars without canbus, or with canbus proof ballasts.

Delivery info

From then, delivery is generally
within 2-10 days, depending
on your location.

14 days returns

Not the right fit? No worries!

2 year warranty

Quality comes first and our products are designed to last.



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