2 in 4LED Round Trailer Side Marker Lights 10Pack - Sealed Flush Mount

In this review the Partsam 10Pack 2 in 4LED round trailer side marker lights are evaluated as a practical lighting upgrade for trailers, trucks, and RVs. The kit is aimed at owners who want reliable, sealed 12V clearance or side marker lights that replace incandescent units and simplify installation; the single biggest reason to buy is the fully sealed, submersible housing and included grommets and pigtails that make a weatherproof installation straightforward. Reviewers will find it useful for routine exterior lighting upgrades and maintenance.

Key Features

• DOT Approved: Meets regulatory standards so it can be used as a compliant clearance or side marker light on most road vehicles.
• Sealed waterproof housing: Sonically sealed lens and housing are submersible and rated IP67, protecting LEDs from water and road debris for long-term use.
• Complete install kit: Each light ships with grommets and pigtails so wiring and flush mounting are included for a finished installation.
• Simple 2-wire hookup: The black negative and red positive wires make wiring quick and intuitive on 12V systems.
• Compact flush mount: The 2 in inner diameter and roughly 2.5 in outer diameter fit tight flush installations when a 2.25 in to 2.3 in hole is drilled for the grommet.
• LED reliability: 4 LEDs per unit replace incandescent bulbs to reduce maintenance and increase expected life under vibration and road use.

Who It's For

This pack is best for owners of trailers, semi trucks, RVs, service vehicles, and utility trucks who need several matching marker lights for a full-side installation or bulk replacement. The kit of five amber and five red lights makes it practical for fleets, repair shops, or DIYers who prefer a complete set and want weatherproof, low-maintenance LEDs.

It is not ideal for those who need variable color options, custom lens shapes, or non-12V systems; also buyers who require an exact OEM grommet fit for uncommon housings should check the rubber grommet dimensions before purchase because fit reports are mixed.

Pros & Cons

Pros

• Durable, sonically sealed construction provides strong weather and water protection for exterior use.
• Complete kit with grommets and pigtails simplifies replacement and reduces additional parts purchases.
• LEDs improve longevity and reduce heat and power draw compared with incandescent bulbs.
• DOT approval gives confidence for legal road use as clearance or side marker lighting.

Cons

• Some users report mixed fit with the rubber grommets, so the supplied grommet may require adjustment or trimming for certain mounting holes.
• Brightness opinions are mixed among users; some find them very bright while others expected higher output for certain applications.

Specifications

Our Verdict

The Partsam 10Pack 2 in 4LED trailer marker lights are a sensible value for anyone needing multiple sealed, DOT approved side markers for trailers, trucks, or RVs. The included grommets and pigtails plus the sonically sealed housing make installation and long-term outdoor use the main strengths, though buyers should verify grommet fit and expected brightness for their specific application. Overall it is a practical, cost-effective upgrade from incandescent lights.

Frequently Asked Questions

Are these lights waterproof?
Yes. The units are sonically sealed and rated IP67, making them submersible and suitable for wet environments.

What wires do I connect?
These lights use a simple 2-wire connection: black is negative and red is positive for 12V systems.

What hole size do I need to drill?
Drill approximately a 2.25 in to 2.3 in hole to fit the supplied grommet and achieve a flush mount.