ROADEAL Headlights for 1999-2007 GMC Sierra & Yukon XL — Direct-Fit Assemblies with HB3/HB4, IP65

If you need a one-for-one replacement for worn, cracked, or dim factory headlights on classic GMC Sierras and compatible Yukon XLs, these ROADEAL assemblies match OEM fitment and mounting points while upgrading lens clarity and reflector performance. They come with HB3 (9005) high-beam and HB4 (9006) low-beam bulbs installed, are built to IP65 waterproofing standards, and carry a three-year warranty for added peace of mind.

Will these headlights fit my GMC Sierra or Yukon?

These assemblies are designed to match the original equipment mounting, wiring, and dimensions for most 1999–2006 GMC Sierra 1500/2500/3500 models and 2007 Sierra Classic trucks. They also fit 2000–2006 GMC Yukon 1500/2500 XL models. Note specific older or newer body-style variants are excluded.

• OEM references: 15850351 / 15850352
• Partslink numbers: GM2502188 / GM2503188
• Not compatible with 1999 Sierra Old Body or 2007 Sierra New Body style models

How much brighter and clearer are these compared with worn stock units?

ROADEAL uses high-transmittance polycarbonate lenses with UV coating and a BMC reflector engineered for higher reflectivity. The combination increases usable light output and resists yellowing, improving nighttime visibility and lens longevity versus aged or inexpensive aftermarket units.

• High-transmittance PC lens with UV coating for clarity
• BMC reflector rated to withstand up to 570°F for consistent reflection
• Manufacturer estimates about 20% more brightness versus common materials

Are these headlights weatherproof and durable?

The housings are assembled to an IP65 waterproof standard to keep out moisture and particulates in adverse conditions. Seals and vents are designed to minimize fogging and protect internal components during rain, snow, and temperature changes.

• IP65-rated construction for water and dust resistance
• Sealed lens and housing to prevent moisture ingress
• Durable materials and UV coating to reduce aging and cracking

How difficult is installation and what bulbs are included?

Installation is intended to be plug-and-play with direct replacement for the stock headlight assemblies—no drilling required. Low and high beam bulbs come preinstalled; turn signal bulbs are not included.

• Included bulbs: Low beam HB4 (9006) and high beam HB3 (9005)
• Turn signal uses 3157A bulbs (sold separately)
• Direct-fit design uses OEM wiring connectors for a fast swap

Who is this product for? These ROADEAL headlights are ideal for GMC Sierra and Yukon XL owners restoring or upgrading older trucks who want a reliable, OEM-compatible replacement with improved clarity and weather resistance. Choose them if you want an easy installation, brighter output than aged lenses, and a covered three-year warranty without modifying factory wiring or mounts.