Partsam 5" x 3.74" 17-LED Amber Cab Roof Marker Light Assembly — DOT-Compliant, Universal Fit

Partsam 5X Super Bright Amber 17LED Cab Marker Top Roof Lights are a DOT-compliant LED replacement assembly that delivers brighter, faster, and more energy-efficient amber marker illumination for heavy-duty trucks and trailers.

If you're upgrading worn incandescent cab marker lights or converting multiple vehicles to LEDs, this Partsam 5X amber roof light assembly offers a compact, universal fit option designed for heavy-duty rigs such as Kenworth, Peterbilt, Freightliner, Mack, International and other Paccar models. The assembly measures 5.00" x 3.74" and uses 17 high-output LEDs to improve visibility while drawing minimal current and producing less heat than traditional bulbs. It's sold as a top-mount cab marker replacement; some models may require minor modifications for perfect fitment — always verify dimensions and mounting hole positions before installation.

Will these LED cab marker lights fit my truck's roof line?

The Partsam 5X assembly is designed as a universal replacement for many heavy-duty trucks and trailers, but fitment varies by make and model. Measure your existing marker location and compare it to the Partsam dimensions to confirm compatibility; Kenworth W900s and other fixed-fit cabs sometimes need small modifications to the mounting area.

• Overall size: 5.00 inches by 3.74 inches — confirm against your stock light.
• Includes a pre-drilled screw hole; screws not included — check screw size and pitch.
• Universal housing works on trucks, trailers, tractors, dump trucks, buses and specialty vehicles.

How does switching to these LEDs benefit my fleet or single rig?

LEDs offer faster illumination, more consistent light output, and lower electrical draw than incandescent bulbs, improving electrical system efficiency and reducing heat generation. That makes them especially useful for fleets aiming to lower maintenance frequency and for operators wanting brighter, clearer marker visibility.

• 17 high-output LEDs provide strong amber visibility for day and night conditions.
• Lower amperage draw reduces stress on vehicle wiring and alternators.
• LEDs run cooler and typically last longer than incandescent alternatives.

Are these roof marker lights legal and safe to use on commercial vehicles?

Partsam advertises this assembly as DOT compliant, satisfying marker light regulations when installed correctly and used as intended. Always verify local and regional vehicle lighting laws and mounting requirements, and ensure installation follows DOT placement guidelines for marker lights on commercial vehicles.

• DOT-compliant amber color and lens styling for marker visibility.
• Designed for standard cab marker positions on heavy-duty trucks and trailers.
• Proper installation maintains compliance—double-check mounting height and spacing rules.

How simple is the installation and what should I prepare?

Installation is straightforward for most retrofit jobs: remove the old unit, test-fit the Partsam assembly, secure with appropriate screws, and connect the wiring. Because screws are not included, have matching fasteners and basic hand tools on hand; some cabs may require minor trimming or hole adjustments for a flush fit.

• Prepare matching screw hardware — mounting hole is provided but screws are not included.
• Basic wiring hookup typically matches standard marker light circuits; use proper connectors and sealants.
• Test light function before final sealing to ensure correct polarity and operation.

Who is this for: The Partsam 5X 17LED amber cab marker assembly is aimed at truck owners, fleet managers and operators who want a durable, energy-efficient LED upgrade for heavy-duty rigs and trailers. It suits those replacing old incandescent markers, standardizing lighting across a fleet, or enhancing nighttime and low-visibility presence without extensive electrical changes. If your vehicle is a Kenworth, Peterbilt, Freightliner, Mack, International or similar Paccar model, measure your existing markers and consider this Partsam assembly when you want brighter, longer-lasting amber marker lights with DOT-compliant styling.