ROADEAL Headlight Assemblies for 1999-2007 GMC Sierra 1500/2500/3500 - Direct Fit, IP65 Waterproof

Upgrade worn or fogged factory headlights with a set designed to match original equipment dimensions while improving light transmission and weather resistance. These ROADEAL assemblies correspond to OEM# 15850351 / 15850352 and Partslink# GM2502188 / GM2503188, fitting 1999–2006 GMC Sierra 1500/2500/3500, 2007 GMC Sierra classic 1500/2500/3500, and 2000–2006 GMC Yukon 1500/2500 XL. They are not compatible with 1999 Sierra Old Body Style, 2007 Sierra New Body Style, or GMC Yukon Denali models.

Will these lights physically fit my GMC Sierra?

Yes — the housings are manufactured to the same mounting points and electrical connector layout as the original assemblies, making them a direct replacement. No modifications, drilling, or custom brackets are required for compatible models.

• Exact OEM reference numbers included for verification.
• Plug-and-play connector design for simple swap-out.
• Intended for specific year ranges and body styles only.

How bright and durable are the lenses and reflectors?

ROADEAL uses high-transmittance polycarbonate lenses with UV coating to reduce yellowing and preserve clarity over time. The BMC reflectors tolerate high temperatures (up to about 570°F) and provide stronger light reflection, yielding noticeable brightness gains compared with common reflector materials.

• PC lens with UV protection for long-term clarity.
• BMC reflector rated for high heat and higher reflection.
• Approximately 20% increased brightness versus standard alternatives.

Are these headlights weatherproof and ready for winter use?

They meet an IP65 waterproof standard and use sealing methods that limit moisture and dust intrusion, so they perform reliably in rain, snow, and road spray situations. The build helps reduce internal fogging and keeps electrical components protected.

• IP65-rated sealing against water jets and dust ingress.
• Engineered joints and gaskets to discourage condensation.
• Suitable for seasonal driving and varied climates.

What bulbs come with the assembly and which are not included?

Low and high beams are provided using HB4 (9006) for low beam and HB3 (9005) for high beam, so your lighting is ready on arrival. Turn signal bulbs (3157A) are not included and should be sourced separately if needed.

• Included: HB4 9006 (low) and HB3 9005 (high).
• Not included: 3157A turn-signal bulbs.
• Designed for direct bulb replacement without rewiring.

Who is this for: These ROADEAL headlight assemblies are ideal for owners of compatible GMC Sierra and Yukon XL trucks who want an OEM-size replacement that restores clarity and improves performance without complex installation. Choose these if you need corrosion-resistant reflectors, UV-protected lenses, plug-and-play fitment, and a robust seal for all-season driving. ROADEAL backs the product with a three-year warranty and customer support to assist with fitment or concerns.