2Pcs New OEM D3S 6000k 66340 66340HBI 42403 42302 Hid Xenon Headlight Bulbs Set

HID Xenon Headlight Bulbs Set

This two-piece set of D3S HID xenon headlight bulbs, cross-referenced with 66340, 66340HBI, 42403, and 42302, is a direct replacement pair for vehicles running factory D3S xenon low beam headlamps.

Overview

This HID xenon headlight bulb set delivers the bright, crisp output that factory D3S systems are built around, with a 6000k color temperature for a clean white beam. Each set includes two bulbs so both sides can be replaced at the same time. It suits drivers replacing a burnt-out xenon bulb or renewing worn lamps for better night visibility.

Built For Performance

• 6000k color temperature produces a bright white light output
• D3S base type fits standard xenon headlamp housings and ballasts
• Cross-references 66340, 66340HBI, 42403, and 42302
• Sold as a matched pair for balanced left and right output
• Xenon arc tube design delivers steady illumination across the beam pattern

On-The-Job Use

• Replacing a failed or dimming xenon bulb on a daily driver
• Refreshing both headlamps at once to keep color output consistent
• Restoring nighttime visibility after the original bulbs have aged
• Maintenance on vehicles with factory D3S xenon Projector or reflector lamps

Specs At A Glance

Good To Know

Q: Can these bulbs be installed without a ballast? A: D3S xenon bulbs require a working factory ballast and igniter to fire. If the original system is intact, these bulbs drop into the same sockets.

Q: Why replace both bulbs instead of just the failed one? A: Xenon bulb color shifts as it ages, so a new bulb alongside an old one can look mismatched. Fitting the pair keeps output even across both headlamps.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.