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Optronics · Electrical & Lighting
MCL21RB
In stock · ships from Knoxville
The Optronics MCL21RB is a red 2-inch round beehive LED marker/clearance light.
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Verified fitment for 3 applications
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All confirmed applications for this part number.
Other applications
Other applications
Universal fit for trailers requiring a 2-inch red round marker light. Requires industry-standard PL-10 plug and A54GB grommet, sold separately unless purchased as kit MCL-21RBK.
Part data verified against 3 catalog sources
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It's commonly used as a clearance, side marker, or rear tracking light on all types of trailers, including cargo, utility, boat, RV, and semi-trailers. Featuring 8 diodes that draw only 0.061 amps at 12.8V DC, this light is an energy-efficient, long-lasting upgrade or direct replacement for traditional incandescent lights. The sonically sealed polycarbonate lens and housing make it completely waterproof, ensuring reliable performance in harsh road conditions while meeting DOT/SAE/FMVSS/CMVSS 108 requirements.
Part Number: MCL21RB
2 LED BEHIVE RED
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting