Is this a pair or a single bulb?

It is sold as a pair, so one order covers both headlights.

Will these fit my car?

Only if your car uses D2R HID bulbs from the factory. Check the bulb type printed on the old bulb or in the owner's manual before ordering.

Do I need new ballasts?

No. These are plug-and-play replacements for existing OEM HID ballasts and connectors.

Is 5000K legal for road use?

The arc position is DOT/SAE and ECE compliant, and 5000K is a common road-legal HID color. Legality still depends on your local rules and the housing.

Why is the size listed as D4S when the name says D2R?

The two types are not interchangeable. Confirm D2R on your vehicle before buying, since the listing's size field conflicts with the product name.

When is the best time to buy?

At $62.95 at Southern Car Parts as of November 5, 2026, it is the lowest of three new prices. HID bulb prices move little, so waiting rarely saves much.