7440 and 7443 Pears (21W / 5W)

7440 / W3X16D (21 watts)

Single-Filament bulb with a W3X16D pedestal (two contact points). Used for functions that require one brightness, such as flashlights or rear lights.

7443 / W3X16Q (5 watts / 21 watts)

Double-Filament bulb with a W3X16Q pedestal (four contact points). Designed to support two brightnesses, e.g. Like daytime running lights (low brightness) and brake light (high brightness).

The difference in function: 7440 is suitable for simple light functions, while 7443 allows for double functionality in one and the same bulb. Note that a 7443 bulb may fit in a 7440-semen, but it will only work with one brightness. Conversely, a 7440 bulb cannot be used properly in a 7443 sustain. By choosing the right bulb, you ensure that the lights work properly in relation to the car's specifications.

Technical explanation:

• W.: Socket type (Glassokkel)
• 3: 3 mm width of contact
• X16: Nominal Power Rating (16 Watts)
• Q / D.: Quadruple (4) Contact Points or Double (2) Contact Points