Optronics MCL40 LED Rectangular Marker / Clearance Light – Red or Amber – 4" Surface Mount

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The Optronics MCL40 LED Rectangular Marker Light is a compact, high-visibility LED marker and clearance light designed for trailers, trucks, RVs, and utility vehicles. With its 4" x 1.5" rectangular profile and standard 3" mounting centers, it serves as an easy upgrade or replacement for many common trailer marker lights. This durable LED marker light is available in two lens color options to meet DOT trailer lighting requirements: Red Marker Light – typically used for rear or side rear clearance lighting Amber Marker Light – typically used for front or side front clearance lighting Both versions feature a rugged surface-mount white base with a snap-on replaceable lens, making installation and service quick and simple. The light contains two bright LEDs that provide excellent visibility while drawing very little power from your trailer’s 12-volt electrical system. A built-in reflex reflector eliminates the need for a separate reflector, helping keep your trailer DOT compliant. Constructed with a durable acrylic lens and ABS housing, the MCL40 is sonically sealed to protect the electronics from water, road debris, and vibration. Available Variants Variant Lens Color Typical Trailer Location MCL40RB Red Rear / rear side marker light MCL40AB Amber Front / front side marker light Both variants share the same housing, mounting pattern, and wiring configuration. Key Features Bright LED Marker / Clearance LightTwo high-output LEDs provide excellent visibility. Available in Red or AmberChoose the correct color to meet trailer lighting requirements. Built-In Reflex ReflectorLens eliminates the need for a separate reflector. Surface Mount DesignWhite base mounts on standard 3" centers. Two-Wire ConnectionPower and ground wires allow installation on any surface. Snap-On Replaceable LensQuick service without replacing the entire light. Sealed Waterproof HousingProtects against road spray, dust, and vibration. Specifications Specification Details Manufacturer Optronics Series MCL40 Light Type LED Marker / Clearance Light Lens Colors Red or Amber Dimensions 4" x 1.5" x 0.94" Mounting Centers 3" LEDs 2 Voltage 12V DC Power Draw 0.04 Amps Housing ABS Plastic Lens Acrylic Mount Type Surface Mount Wiring Two Wire (Power & Ground) Compliance FMVSS P2 A Cross Reference – Replacement Marker Lights The MCL40 LED marker light replaces several common trailer clearance lights with similar dimensions. Common cross references include: Optronics MC65RB / MC65AB Peterson 426 Series marker lights Bargman 30 Series clearance lights Truck-Lite 10250 marker lights Grote 45263 marker lights These lights share similar 4" x 1.5" thinline dimensions with 3" mounting centers, making the MCL40 a popular LED upgrade for older incandescent lights. Common Applications The Optronics MCL40 LED marker light is commonly installed on: Enclosed cargo trailers Utility trailers Equipment trailers Dump trailers RV campers Commercial trucks Its compact design allows installation where space is limited but reliable marker lighting is required. Why Upgrade to LED Trailer Marker Lights? LED lighting provides major advantages over traditional incandescent lights: ✔ Brighter illumination✔ Longer lifespan✔ Lower power consumption✔ Better vibration resistance✔ Waterproof sealed electronics Available at AAA Trailer AAA Trailer supplies trailer lights, axles, brakes, wheels, electrical components, and trailer hardware for trailer owners across the United States. 📞 Call/Text: 517-225-1991 🌐 AAATrailer.com Show more