Description
Enhanced Lighting Performance. The Diode Dynamics HID Headlight Bulbs; D5A 6000K offer a high-output lighting solution designed to replace factory OEM HID bulbs in GMC Sierra 2500/3500 vehicles. They improve nighttime visibility by providing brighter, ice white light with a cooler color temperature that complements modern LED lighting. This upgrade maintains the original beam pattern and alignment for optimal road safety.
Construction and Appearance. These HID bulbs are manufactured using premium German quartz glass and American salts within a fully automated production process. The bulbs produce a pure white light without green or purple tint, finished in a clear, high-quality quartz envelope ensuring reliable performance and longevity.
Installation. Installation is straightforward and typically requires only basic tools, featuring a plug-and-play OEM-size connector. No modifications or drilling are necessary, allowing for a quick 10 to 20-minute replacement process.
Warranty. These bulbs come with a 3-year limited replacement warranty that covers defects and ensures long-term satisfaction.
Application. Designed specifically to fit the 2016 through 2023 GMC Sierra 2500/3500 equipped with factory HID headlights. These bulbs will not fit models with halogen bulbs or other bulb sizes.
Diode Dynamics DD1221P
CA Residents: WARNING: Cancer and Reproductive Harm
- Direct Replacement for GMC Sierra 2500/3500 OEM HID Headlight Bulbs
- Provides Increased Total Light Output
- Perfect Alignment with Easy Installation
- True Colors with No Variance
- D5A Bulb Size
- Hi/Lo Beam Application
- Fits 2016-2023 Sierra 2500/3500 HD with Factory HID Headlights
| Brand | Diode Dynamics |
| Bulb Type | Headlight Bulb |






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