Bulb - Quinton Hazell - QBL566

The Quinton Hazell QBL566 is a P21/4W bulb with a BAZ15d base, designed for use as a rear fog light.

This bulb operates at 12 Volts and has a rated power of 21 Watts.

You should use the vehicle make and model tool provided on the product page to check for compatibility. If still unsure, contact the seller with your vehicle's specific details.

The QBL566 is specifically designed as a rear fog light bulb. While it might physically fit other sockets, it is intended for this specific function and may not be suitable or legal for other uses.

BAZ15d refers to the base design of the bulb, indicating the number and type of electrical contacts (two contacts with an offset locating pin) and the diameter of the base, ensuring it fits correctly into compatible light fixtures.

A rear fog light is brighter than a standard tail light and is intended to make your vehicle more visible to following traffic in very poor visibility conditions, such as dense fog, heavy rain, or snow.

Ensure the bulb is correctly seated in the socket. Check the vehicle's fuse for the rear fog light circuit. Verify that the vehicle's wiring and light switch are functioning correctly.

Check for a loose connection in the bulb socket or wiring. Ensure the bulb base is clean and free from corrosion. A faulty light switch could also be the cause.

Avoid touching the glass of the new bulb with bare hands during installation. Ensure the bulb is the correct type and wattage for the vehicle's application; using an incorrect bulb can lead to overheating and failure.