AlphaRex PRO-Series Halogen Projector Alpha-Black Headlights for K2XX GMC Sierra

The GMC Sierra is a proven platform that continues to attract enthusiasts looking for purposeful lighting upgrades. AlphaRex has developed dedicated 14-18 GMC Sierra headlights to complement the vehicle’s front-end character with high-performance halogen projector optics in a clean housing. The PRO-Series headlights for the 14-18 GMC Sierra are purpose-built to enhance both aesthetics and on-road visibility without compromising fit, function, or regulatory compliance.

Light Features

• The GMC Sierra headlights use a precision projector design powered by high-output LED technology for both low and high beam. A slim LED tube along the lower edge of the housing provides distinctive accent lighting. An integrated DRL provides enhanced daytime visibility. Amber sequential turn signals create a sweeping, dynamic indicator effect.

Breathing Vents

• Condensation is a common challenge in both OEM and aftermarket headlights, as moisture can accumulate inside housings due to temperature changes even with strong seals. To address this, Nitto Denko TEMISH® CAPSEAL™ air vents promote efficient moisture discharge in the GMC Sierra headlights. These vents improve airflow within the housing so moisture can escape naturally, functioning like a breathing mechanism — earning them the “Air Breathers” name.

Housing

• The headlights housing is constructed from high-quality polypropylene (PP) for lasting durability. Polypropylene’s strong resistance to heat and moisture helps maintain reliable performance across a wide range of driving conditions and climates.

Lens

• The GMC Sierra headlights use high-quality polycarbonate lenses engineered to withstand extreme weather conditions while delivering excellent lighting performance. An anti-fog coating reduces internal fogging and improves visibility in changing conditions. A protective UV-resistant coating is also applied to resist yellowing and oxidation, keeping the lenses clear and looking newer for longer.

Features

• LED tube accent
• Sequential turn signal
• Integrated DRL
• Projector optics
• Direct OEM fitment, no modifications required
• Plug-and-play installation

What’s Included

• One pair of AlphaRex PRO-Series headlights (driver and passenger side)
• Required mounting hardware
• Installation instructions

Applications

• GMC Sierra 1500: K2XX | 2014-2018
• GMC Sierra 2500HD: K2XX | 2015-2019
• GMC Sierra 3500HD: K2XX | 2015-2019

Frequently Asked Questions

What is the Alpha-Black finish on the AlphaRex PRO-Series GMC Sierra headlights? Alpha-Black is the housing finish designation for this version of the AlphaRex PRO-Series headlights for the K2XX GMC Sierra. It identifies the color of the headlight housing. AlphaRex offers the PRO-Series for the K2XX Sierra in multiple finish options; Alpha-Black and Black are both available for this platform.

Do the AlphaRex PRO-Series Alpha-Black headlights fit the Sierra 1500, 2500HD, and 3500HD? Yes. The AlphaRex PRO-Series Alpha-Black headlights cover the full K2XX GMC Sierra lineup: the Sierra 1500 (2014-2018), Sierra 2500HD (2015-2019), and Sierra 3500HD (2015-2019). Direct OEM fitment means no cutting, drilling, or modifications are required on any of these applications.

What lighting functions do the AlphaRex PRO-Series Alpha-Black Sierra headlights include? The AlphaRex PRO-Series Alpha-Black headlights for the K2XX GMC Sierra include LED projector optics for low and high beam, a slim LED tube accent along the lower housing edge, an integrated DRL, and amber sequential turn signals. This listing does not include an activation startup sequence.

How do the sequential turn signals work on the AlphaRex PRO-Series Sierra headlights? The amber sequential turn signals in the AlphaRex PRO-Series headlights for the 14-18 GMC Sierra produce a sweeping, dynamic indicator effect rather than a standard static flash. This is a built-in function of the headlight assembly and does not require additional wiring or modules beyond the plug-and-play connection.

What do the Air Breather vents do in the AlphaRex PRO-Series K2XX Sierra headlights? The Air Breather vents, which use Nitto Denko TEMISH CAPSEAL technology, are integrated into the AlphaRex PRO-Series housing to manage moisture. Condensation can form inside headlight housings when temperatures change, even in tightly sealed units. These vents promote airflow so moisture exits naturally, reducing internal fogging over the life of the headlights.

What is included with the AlphaRex PRO-Series Alpha-Black headlights for the GMC Sierra? Each purchase includes one pair of AlphaRex PRO-Series Alpha-Black headlights covering both the driver and passenger side, along with required mounting hardware and installation instructions.

About AlphaRex

AlphaRex has emerged as a leader in the automotive lighting industry, driven by a relentless commitment to innovation and quality. Since its founding in June 2018, the company has grown from a small operation to an industry-renowned brand, overcoming challenges and seizing opportunities along the way. This dedication to technological advancement is matched by a steadfast commitment to regulatory compliance and industry standards, ensuring that every product not only meets but surpasses expectations.