LED Side Marker Lights for Sierra 2500HD 3500HD 2020-2025 - Smoked

In this review the focus is on a plug-and-play LED side marker kit designed for 2020-2025 Sierra 2500HD and 3500HD trucks. The bottom line: this four-piece smoked lens set is for owners who want a brighter, modern look and improved visibility without cutting or rewiring. Installers who value a clean OEM replacement and a crisp white Euro-style appearance will appreciate the substantial brightness upgrade and simple swap-in fit. The review finds these lights deliver clear visual impact and much stronger output than factory bulbs.

Key Features

• Compatibility: Built to fit 2020-2025 Sierra 2500HD and Sierra 3500HD, so buyers get a direct replacement for the factory fender marker lamps.
• High brightness LEDs: Each kit uses a dense array of SMD LEDs to produce a strip-style white output that is roughly five times brighter than original bulbs for better daytime and nighttime visibility.
• Custom fit design: The housings match OEM mounting points and sockets, allowing a plug-and-play swap with no trimming or modification required for most trucks.
• Smoked lens appearance: The Euro smoked lens gives the truck a sleeker, cohesive look while still providing noticeable light output when illuminated.
• Durability and approvals: The lamps are IP67 waterproof and DOT/SAE approved, meeting North American regulations for marker lights.
• Complete kit: The package includes two front and two rear side marker lamps with the necessary connectors for a simple replacement in minutes.

Who It's For

This kit is best for Sierra 2500HD and 3500HD owners who want a straightforward cosmetic and visibility upgrade without electrical work; truck enthusiasts who prefer a white LED, smoked-lens look and an OEM-style fit will find it especially appealing. It also suits anyone replacing broken or faded marker housings who wants a brighter, modern light source.

Those who should look elsewhere include drivers who require amber output rather than white, or anyone who prefers OEM amber reflectors. Also, if absolute ultimate ruggedness under extreme offroad abuse is the top priority, consider heavy-duty metal options; these are a plastic, plug-in replacement focused on fit and appearance.

Pros & Cons

Pros

• Very bright white LED strip output improves visibility and modernizes the truck's look.
• OEM-compatible fit and plug-and-play installation makes replacement fast for most users.
• Smoked lens design gives a sleek, cohesive appearance to the fender and wheel-arch area.
• IP67 waterproof rating and DOT/SAE approval provide regulatory compliance and weather resistance.

Cons

• Some installers report mixed ease of installation and minor fitment fuss depending on truck trim and existing hardware.
• A few customers noted concerns about screw size and perceived sturdiness compared with heavier aftermarket housings.

Specifications

Fitment	2020-2025 Sierra 2500HD and 3500HD
Pieces Included	4 pieces (2 front, 2 rear)
LED Count	144 high power White SMD LEDs per set
Lens	Smoked lens, white light output
Approvals	DOT/SAE approved
Ingress Protection	IP67 waterproof
OEM Part Numbers Replaced	84185031, 84806032

Our Verdict

The smoked lens LED side marker kit is a solid value for Sierra 2500HD and 3500HD owners who want a bright, modern replacement that installs with minimal hassle and meets DOT/SAE standards. It upgrades visibility and appearance while preserving factory fitment, though a small number of users may encounter minor fit or fastening differences during installation.

Frequently Asked Questions

Will these plug into the factory socket?
Yes, the lights are designed as a plug-and-play replacement and connect to the factory socket with no trimming required in most installations.

Are the lights weather resistant?
They carry an IP67 rating for water resistance and are DOT/SAE approved for use in North America.

Do they replace specific OEM part numbers?
The kit is listed as a replacement for OEM part numbers 84185031 and 84806032 and fits the 2020-2025 Sierra 2500HD and 3500HD models.