Clearance Marker Lamps

Clearance Marker Lamps for Commercial Trucks & Trailers

Clearance marker lamps are essential safety lights designed to improve vehicle visibility and meet DOT/FMCSA lighting requirements for trucks, trailers, buses, and utility vehicles. These lamps clearly define the outer edges of large vehicles, helping prevent accidents by signaling width, height, and length to other drivers on the road.

Available in LED and incandescent options, clearance marker lights come in multiple shapes and sizes—such as 3/4″ bullet LEDs, 2″ and 2.5″ round marker lamps, rectangular surface-mount designs, and PC-rated multi-function lights. They can be mounted with grommets, flanges, or screw bases, and are offered in amber and red lenses to meet front, side, and rear visibility requirements.

Many clearance marker lamps feature sealed, waterproof housings for durability in harsh weather conditions, vibration-resistant LED technology for long service life, and quick-connect terminals (PL-10, AMP, or bullet connectors) for easy installation. Popular brands include Truck-Lite, Grote, Peterson, Maxxima, Optronics, and Wesbar, ensuring compatibility with OEM and aftermarket applications.

Whether you’re outfitting a semi-truck, dry van trailer, flatbed, tanker, or utility fleet, clearance marker lights are a critical part of your vehicle’s lighting and safety system. Choosing high-quality DOT-approved clearance lamps ensures compliance, reliability, and maximum road visibility.

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Truck-Lite

  • 10 Series 2.5″ round LED — 10250R (red), 10250Y (amber). P2, “Fit ’N Forget” (PL-10) interface. 

  • 35 Series 1″×4″ slim rectangular LED — 35201R (red), 35201Y (amber). P2, 2-screw mount. 

  • 26 Series 2″×5″ rectangular LED (dome lens) — 26270Y (amber), 26270R (red). Hardwired .180 bullets, kit options. 

Grote

  • 2″ round clearance markers — e.g., 45822 (red). Family page includes amber/red options that fit common grommets/flanges. 

  • Turtle-Back II LED markers — 47072 (red), 47073 (amber). Sealed, horizontal mount. 

  • Two-bulb (incandescent) clearance/marker — 45432 (red), 45433 (yellow). Legacy but still widely referenced; PC when mounted at 45°. 

  • Category landing (LED clearance/marker) — full filterable lineup.

Peterson (PML)

  • 3/4″ LED PC-rated bullets — M177A-HD-BT2 (amber), M177R-HD-BT2 (red). Heavy-duty, .180 bullets. 

  • 2.5″ round LED, PC-rated w/flange (LumenX®) — examples: M190A/M190R family; see product detail (accepts PL-10/AMP). 

  • 2.5″×1.2″ LED sealed markers — 203A (amber), 203R (red) and related M191/M203 variants. 

  • Category landing (LED clearance + side marker) — full 400+ SKU matrix. 

Optronics

  • MCL11 Series 3/4″ sealed LED (PC-rated) — e.g., MCL11RKPVG (red), MCL11AKPVG (amber). Grommet-mount, hard-wired. 

  • LED marker/clearance (all families overview) — MCL08/10/11/110/111 etc. 

  • Mini sealed LED markers — legacy MCL131 variants (some discontinued; see page for replacements). 

Maxxima

  • 2.5″ round P2/P3 LED kits — M11300Y-KIT (amber), M11300R-KIT (red); kit includes grommet & pigtail. 

  • 2.5″ round LED — M16280Y (amber), matching red variant available. 

  • 3/4″ round PC combo LED (clear lens) — M09300YCL (amber), red variant available. 

  • 6″ Peterbilt-style clearance marker — M20332LIGHT (amber/red options). 

  • Brand category pages (STT & Clearance/Marker) — browse entire CM lineup. 

Wesbar (Fulton/Cequent)

  • LED stud-mount waterproof marker (self-grounding) — 47-106857 (amber). P2/P3-rated. 

  • LED rectangular amber w/reflex, black base — 47-222017. 

  • Sealed rectangular marker/clearance (red) — 203368. PC-rated when mounted correctly. 

  • 2″ round amber marker — 203380. 

  • Side marker clearance light (red, white base) — 203234; plus red/black base 203113. 

  • Brand homepage — for additional current SKUs. 

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