Best Sealed Side Marker Light Assemblies of 2026

David Davis Avatar
David Davis
Last Updated: Jan 28, 2026

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Sealed side marker light assemblies are essential for ensuring safety on the road. These compact lights are installed on the sides of vehicles to indicate the width and length of the vehicle to other drivers. They come in different colors, including red, amber, and white, and are designed to withstand harsh weather conditions. Sealed side marker light assemblies are typically made with durable materials, such as polycarbonate lenses and ABS housings, to ensure they can withstand the wear and tear of daily use. These lights are easy to install and provide drivers with increased visibility, making them a must-have for any vehicle.

At a Glance: Our Top Picks

Partsam 5pcs 2" Red Round Sealed Clearance Marker Light 4 LED Cover #TOP 1
Partsam 5pcs 2" Red Round Sealed Clearance Marker Light 4 LED
ftb score rating icon 9.8
Nilight TL-03 LED Side Marker Lights Cover #TOP 2
Nilight TL-03 LED Side Marker Lights
ftb score rating icon 9.7
Nilight TL-16 LED Marker Light Cover #TOP 3
Nilight TL-16 LED Marker Light
ftb score rating icon 9.5

Top 10 Sealed Side Marker Light Assemblies

Partsam 5pcs 2" Red Round Sealed Clearance Marker Light 4 LED

2 inch
Partsam 5pcs 2" Red Round Sealed Clearance Marker Light 4 LED Cover
Partsam 5pcs 2 inch Red 4 LED Round Sealed Trailer Clearance Marker Light [DOT Approved] Mount Grommet/Pigtails Hardwired

Partsam offers a 5-pack of red LED sealed 2" round clearance side marker lights, along with grommets and pigtails for easy installation. The flush mount lights are waterproof, submersible and serve as either side marker or clearance lights. The 2-wire connection makes installation simple, with black being the negative and red being the positive. These lights are perfect replacements for incandescent lights, with dimensions of outer diameter 2.5", inner diameter 2", high diameter 0.75" (with grommet), and drilling holes of 2-5/16". They are universally compatible with any DC12V vehicle, including semi trucks and trailers, service trucks, buses, utility trailers, and more.

What We Like
Easy installation
Bright LED lights
OEM quality
No water retention
Good price
#TOP 2

Nilight TL-03 LED Side Marker Lights

TL-03
10pcs Amber
10PCS Amber
Nilight TL-03 LED Side Marker Lights Cover
Nilight TL-03 10 PCS 3/4” Round Clearance LED Front Rear Side Indicator Bullet Marker Light for Truck RV Car Bus Trailer Van Caravan Boat (12V, Amber)

The Nilight LED Marker Lights are designed to enhance your nighttime visibility with their compact size and bright output. Each light features three SMD LEDs that produce 60 lumens, ensuring you stay safe during dark conditions. The surface mount design, accompanied by a rubber grommet, makes installation easy and secure. With a waterproof rating of IP68, these lights are built to last, resisting damage from water and harsh weather. Their versatility allows you to use them on various vehicles, including trucks, RVs, and boats, functioning as clearance or turn signal lights.

What We Like
Very bright illumination
Easy installation
Waterproof design
Compact size
Versatile automotive uses
#TOP 3

Nilight TL-16 LED Marker Light

TL-16
Amber 2Pcs
3.9 inch
Nilight TL-16 LED Marker Light Cover
Nilight 2PCS 3.9 Inch Front Rear Side Marker Lights 3 LED Amber Clearance Indicator Lamp Waterproof Sealed Surface Mounted for 12V Truck Trailer Camper RV

Introducing the Nilight TL-16 LED Marker Light, a perfect solution for your truck, trailer, or any 12V vehicle. With its upgraded LEDs, this marker light provides excellent amber light output, ensuring high visibility on the road. The micro-reflex faceted reflector design enhances the light output and adds an exquisite appearance to your vehicle. Thanks to its highly sealed construction, this marker light is ready to withstand all weather conditions. Installation is a breeze with the simple wiring setup and included screws. Plus, you can enjoy peace of mind with the 2-year warranty offered by Nilight. Upgrade your vehicle with the Nilight Marker Light today!

What We Like
Easy installation process
Bright LED illumination
Weatherproof and durable design
Good value for price
Versatile vehicle compatibility
#TOP 4

Nilight 10PCS 3/4" Mini LED Side Marker Lights

TL-02
Red+Amber 10cs
Nilight 10PCS 3/4" Mini LED Side Marker Lights Cover
Nilight 10 PCS 3/4 Inch Round Mini LED Clearance Light LED Front Rear Side Marker Indicator Light Bullet Marker Light for Truck RV Car Bus Trailer Van Caravan Boat (12V, Red+Amber)

The Nilight Mini LED Markers offer bright and compact lighting, perfect for enhancing your vehicle's visibility at night. Each small 3/4-inch light contains three powerful LEDs that produce a clear, 60-lumen glow, helping you stay safe on the road after dark. These lights are easy to install with a surface mount design and come with a 9-inch two-wire setup, making wiring straightforward. Built to last, their waterproof and sealed construction protects against cracks and damage, so you won’t have to worry about replacements. Plus, they fit a wide range of 12V vehicles, including cars, trucks, trailers, and boats, making them a versatile lighting solution for your needs.

What We Like
Easy installation
Bright LED lights
Sturdy wire pigtails
Good value for price
Waterproof construction
#TOP 5

Partsam 2PCS 3 LED Truck Trailer Marker Lights

Amber
Partsam 2PCS 3 LED Truck Trailer Marker Lights Cover
Partsam 2PCS 3 LED Truck Trailer Front Rear LED Side Marker Lights [DOT Approved] indicator Lamp Sealed & Waterproof Surface Mounted Installation Amber 3.9"

Partsam 2PCS 3 LED Truck Trailer Marker Lights are versatile and can function as LED marker lights, clearance lights, identification lights, and trailer lights. The lights have waterproof and sealed lenses that make them suitable for left, right, front, and rear roof top clearance lighting. The lights are also compatible with various 12V vehicles like pickups, trucks, trailers, SUVs, caravans, campers, motorhomes, boats, and buses. The product comes with stainless screws for easy installation, and the light size is 98mm x 31mm x 26mm. However, it is hardwired and not plug and play.

What We Like
Can function as LED marker lights, clearance lights, identification lights, and trailer lights
Waterproof and sealed lenses make them suitable for various locations on the vehicle
Compatible with various 12V vehicles
#TOP 6

Nilight TL-13 10 PCS Amber Red 3.8” 6 LED Marker Lights

TL-13
Nilight TL-13 10 PCS Amber Red 3.8” 6 LED Marker Lights Cover
Nilight 10 PCS Amber Red 3.8 Inch 6 LED Side Marker Front Rear Indicator Clearance Lamp for 12V Truck Trailer RV Cab Boat Bus Lorry

Nilight LED Marker Lights are an excellent choice for your truck, trailer, RV, boat, or bus. With 6 high-intensity LED lights, they provide excellent brightness of 120LM, ensuring perfect marker lights. These lights are well-sealed, both at the front lens and back wire lead, making them durable and resistant to water and dust. The simple installation process involves a 2-wire connection and easy mounting using the foam tape base provided. The Nilight LED Marker Lights are versatile and widely used, serving as marker lights, clearance lights, and indicator lights. With a 2-year warranty, you can trust in the quality and reliability of these lights.

What We Like
Very bright illumination
Easy installation process
Good value for price
Water-resistant design
Versatile usage options
#TOP 7

TMH 50 pcs 3/4 Inch Amber LED Mini Round Miniature Side Marker Lights

TMH
US-Amber
50pcs Amber
TMH 50 pcs 3/4 Inch Amber LED Mini Round Miniature Side Marker Lights Cover
TMH 50 pcs 3/4 Inch Mount Amber 3 LED Mini Round Trailer Side Marker Indicator Lights Clearance Button Signal Lamps Universal for Trucks Lorry Boat Pickup Bus Caravan RV Waterproof Sealed Bulbs 12V DC

TMH 50 pcs 3/4 Inch Amber LED Mini Round Miniature Side Marker Lights are perfect for trucks, lorries, boats, pickups, buses, and RVs. The pack includes 50 pcs of 3/4 inch Amber Light with Amber Lens Round Bullet Miniature side marker, each light has a brightness of 60 lumen with 3 pcs High Quality SMD LED which have a 100,000hrs Lifetime. The lights are PC lens, waterproof, shockproof, and dustproof. The product comes with a FREE High-Quality Rubber Cover which makes installation easy without any cracks forever.

What We Like
50 pcs in a pack
Waterproof, shockproof, and dustproof
Easy installation with rubber cover
Bright with 3 pcs High Quality SMD LED
Long lifetime of 100,000 hrs
#TOP 8

Nilight TL-14 LED Marker Clearance Light

TL-14
Amber
Nilight TL-14 LED Marker Clearance Light Cover
Nilight TL-14 10PCS 3.8” 6 Amber Indicator Rear Side Truck Trailer RV Cab Boat Bus Lorry LED Marker Clearance Light

The Nilight TL-14 LED Marker Clearance Light is an excellent choice for those looking for a high-quality marker light for their vehicle. Each light comes with 6 high-intensity LEDs that output a bright 120LM light, making it perfect for use as a marker light. The light is also decently sealed to prevent any damage, and the installation process is simple and straightforward. The light is widely used and is ideal for most 12V trailers, buses, trucks, RVs, boats, and more.

What We Like
Bright LED illumination
Easy installation process
Weather and water resistance
Affordable price
Versatile applications
#TOP 9

LED Trailer Fender Marker Lights

Amber, Red
LED Trailer Fender Marker Lights Cover
Partsam 2Pcs RED AMBER LED Trailer Fender Lights Bullet LED Clearance Marker Light Left Right Amber Front Red Rear, DOT Compliant

These LED Trailer Fender Marker Lights by Partsam come in a pre-wired assembly that can be mounted on the top or side of your trailer fender. They are sealed and waterproof with 1 amber front clearance light and 1 red rear clearance light. The amber LED light points towards the front of the trailer to act as a front clearance light while the red LED light faces rearward to act as a rear clearance light. They use a 2-wire design that includes a ground wire and a lead wire for power. These LED lights are durable, attractive, and inexpensive.

What We Like
Pre-wired assembly
Waterproof and sealed
Attractive and inexpensive
#TOP 10

Nilight TL-33 LED Marker Lights

TL-33
Nilight TL-33 LED Marker Lights Cover
Nilight 4PCS 3.9 Inch 3 Led Truck Trailer Light Front Rear LED Side Marker Lights Clearance Indicator Lamp Waterproof Sealed Surface Mounted LED Marker Light

The Nilight TL-33 LED Marker Lights are a set of 4 waterproof, surface mounted lights that can be used as front, rear, or side marker lights on any 12v vehicle. Upgraded with 3 quality piranha LEDs, the lights have a wide lighting angle and high light intensity. The micro-reflex faceted reflector design adds to the light output and appearance, while the sealed lens and housing make them durable in all weather conditions. Installation is simple with just a black and red wire to connect and flat head screws provided.

What We Like
Can be used as front, rear, or side marker lights on any 12v vehicle
Upgraded with 3 quality piranha LEDs for wider lighting angle and higher light intensity
Micro-reflex faceted reflector design for increased light output and appearance
Sealed lens and housing for durability in all weather conditions
Simple installation with just a black and red wire to connect and flat head screws provided
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Do side marker lights have to be Amber?

Color of clearance lamps, side marker lamps, reflectors, and backup lamps. (1) Front clearance lamps and those marker lamps and reflectors mounted on the front or on the side near the front of a vehicle must display or reflect an amber color.

Generally, all lights and retro reflective materials showing to the front of the vehicle must be white and all those showing to the rear must be red. The general exception is direction indicators and side marker lamps, which must be amber.

3. What is the purpose of a side marker light?

The purpose of side marker lamps is to enable a driver to see another vehicle that is approaching at an angle at night—and to see it early enough that the driver can stop in time to prevent a collision or, at least, slow down to reduce the severity of the collision.

Editor's Notes

During our sealed side marker light assembly research, we found 24 sealed side marker light assembly products and shortlisted 10 quality products. We collected and analyzed 77,887 customer reviews through our big data system to write the sealed side marker light assemblies list. We found that most customers choose sealed side marker light assemblies with an average price of $13.47.

The sealed side marker light assemblies are available for purchase. We have researched hundreds of brands and picked the top brands of sealed side marker light assemblies, including Partsam, Nilight, TMH. The seller of top 1 product has received honest feedback from 1,599 consumers with an average rating of 4.9.

Written by
David Davis Avatar

David Davis has rich experience as a mechanic and a general repairman in the automotive industry. It has given him plenty of knowledge in automobile repair, auto parts, and all kinds of tools. In his spare time, he enjoys assembling and disassembling parts for cars.