AlphaRex Pro Headlights | GMC Sierra

A different look for your Sierra, without stepping into a full-LED headlight package

If your 2014–2018 GMC Sierra’s stock headlights no longer suit the build, the AlphaRex Pro-Series gives you a dual-projector alternative with Black and Alpha Black finish options. This is an H7 halogen projector setup, not a full-LED low- and high-beam upgrade. Choose it for the projector design and a look that works with your truck, rather than expecting the equipment of a premium LED assembly.

Picture the truck back in the driveway after installation: the headlights are no longer an afterthought beside the rest of your build. Before that first night drive, make sure the application, wiring, and beam aim are right. Fitment matters more than choosing a housing color from a photo.

Who this is for

• Owners of compatible US-spec 2014–2018 GMC Sierra trucks looking to change their factory headlight styling.
• Drivers who want dual projectors while retaining H7 halogen low- and high-beam light sources.
• Builds that need a Black or Alpha Black finish to complement existing trim.

Who this is not for

• Buyers looking for full-LED low and high beams. These Pro-Series assemblies use H7 halogen bulbs.
• Vehicles outside the listed application, or non-US-spec trucks without independently confirmed compatibility.
• Anyone assuming every factory lighting configuration uses the same connection. Verify your existing turn signals and converter requirements before ordering.

What changes from the stock setup

• Dual-projector design: H7 low beams and separate H7 high beams provide the specified light-source configuration.
• Distinctive projector optics: AlphaRex’s patented rectangular lenses use a cutoff intended for American left-hand-drive applications.
• Amber details: Amber side reflector lenses, amber side markers, and amber halogen turn-signal bulbs preserve the listed signaling details.
• Finish choices: Black and Alpha Black options let you coordinate with chrome-accented or blacked-out builds. The original housing notes describe chrome accents within the Matte Black option.
• Matched assemblies: One pair replaces both sides, with a plug-and-play harness listed in the package.

Check before installation

Confirm your truck’s year, original headlight configuration, and whether it has stock LED turn signals. AlphaRex headlight converters for stock LED turn signals are listed with this package; confirm that configuration when ordering. Follow the installation guide and check beam aim before driving at night. A plug-and-play harness does not replace an application check.

Installation guide for GMC Sierra headlights

Package and warranty

• 2 headlights: one pair of Pro-Series assemblies for the listed 2014–2018 GMC Sierra application.
• Plug-and-play wiring harness.
• AlphaRex headlight converters for stock LED turn signals.
• Listed warranty: 2 years.

Technical details

• Light sources: H7 halogen low beams and H7 halogen high beams.
• Lens material: polycarbonate (PC).
• Housing material: polypropylene (PP).
• Side marker: amber.
• Available product options: Black and Alpha Black.
• The source specifications also list Chrome, Matte Black, and Gloss Black housing colors. Match your selected variant and part number rather than assuming every listed finish is available.
• The supplied product information states compliance with SAE and DOT FMVSS108 regulations and lists ISO-9000, ISO-9001, and ISO-9002 certifications.

Fitment and part numbers

• GMC Sierra: 2014–2018, subject to verification of the factory lighting configuration.
• 880613: AlphaRex Pro halogen headlights, GMC Sierra (2014–2018), Black, set.
• 880612: AlphaRex Pro halogen headlights, GMC Sierra (2014–2018), Alpha Black, set.

US-spec application: These housings were designed for and tested on US-spec vehicles. Compatibility in other countries can vary and is not guaranteed or always known. Confirm your application before ordering.