Partsam 17-LED Amber Cab Marker Roof Light — 5-Pack, 5.00 x 3.74 in DOT-Compliant, Low-Draw

Partsam 5X Super Bright Amber 17-LED cab marker roof light assembly is a DOT-compliant amber roof marker designed to replace incandescent cab lights on heavy-duty trucks and trailers.

These low-profile amber marker lights from Partsam use 17 high-intensity LEDs to deliver a brighter, faster-on lighting solution that draws less current and produces less heat than traditional bulbs. The assembly measures 5.00" x 3.74" and mounts with a screw (not included), offering a near-universal fit for long-haul rigs including Kenworth, Peterbilt, Freightliner, Mack, Western Star, and International Paccar models — though some installations such as Kenworth W900 may need minor modification.

How does this LED cab marker improve visibility on the road?

The 17 high-output amber LEDs produce a clearer, more consistent signal than incandescent filaments, helping other drivers notice your truck's profile sooner at night and in low-visibility conditions. LEDs illuminate instantly and maintain brightness over time, improving reliability for marker applications.

• 17 LEDs provide uniform amber illumination across the lens
• Instant-on lighting reduces reaction lag compared with bulbs
• Lower current draw extends vehicle electrical/component life
• Reduced heat output preserves surrounding trim and seals

Will this Partsam light fit my truck or trailer?

The assembly is intended as a universal-style replacement for many heavy-duty vehicles and trailers, sized at approximately 5.00" x 3.74" with a pre-drilled mounting hole. Before purchasing, measure your existing cab marker footprint and check screw location; some popular models like the Kenworth W900 may require slight modification or trimming to fit perfectly.

• Dimensions: 5.00" x 3.74" — confirm with your existing fixture
• Universal mounting hole included; screw not supplied
• Compatible with trucks, trailers, buses, tractors, and specialty vehicles
• Minor modification possible for certain OEM housings

What are the electrical and durability benefits versus incandescent markers?

LED modules like this Partsam 17-LED assembly convert electrical energy more efficiently than incandescent bulbs, producing brighter light while consuming less amperage. LEDs also last significantly longer and tolerate vibration and temperature swings better, which suits commercial vehicle use.

• Lower amperage draw reduces load on wiring and fuses
• Longer expected service life than incandescent bulbs
• Less heat generation helps protect lens and seal materials
• Resilient to road vibration and frequent on/off cycles

Is this Partsam cab marker road-legal and safe for fleet use?

The Partsam assembly is designed to meet DOT marker light requirements for amber roof/side marker applications. Use proper mounting, alignment, and wiring to maintain compliance with local and federal vehicle lighting regulations.

• DOT-compliant design for marker applications
• Follow vehicle codes for placement and wiring to remain legal
• Install with suitable hardware and sealants to prevent moisture ingress
• Inspect connections and gaskets periodically for fleet safety

Who this is for: professional drivers, fleet managers, owner-operators, and DIY mechanics who want a reliable, energy-efficient amber roof marker replacement. If you need a brighter, longer-lasting, DOT-compliant cab marker for long-haul trucks, trailers, buses, or specialty vehicles, the Partsam 5X 17-LED amber assembly is built for that purpose — just verify fitment and mounting before installation.