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Instant-On Safety Advantage: Rapid LED illumination provides an average of 3 feet of extra stopping distance advantage per 10 mph for trailing motorists.
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Integrated Gray Flange Mount: Built-in gray polycarbonate flange enables direct, flush surface mounting onto truck and trailer bodies.
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Low Amperage Draw: Efficient 42-diode array lowers electrical strain on vehicle alternators and batteries.
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Fit 'N Forget® S.S. Connector: Corrosion-proof stainless steel connection guards terminals against water and chemical degradation.
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Shock & Vibration Proof: Solid-state, filament-free construction resists road impact and severe operating conditions.
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Fully Sealed Epoxy Construction: Polycarbonate lens and housing seal out dirt, salt, and moisture intrusion.
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Compliance Ready: Fully compliant with DOT, FMVSS 108, CMVSS 108, and SAE I6 signal requirements.
Truck-Lite 44221Y – Super 44, 4" Round Yellow LED Rear Turn Signal Light (42 Diode, Gray Flange Mount, Fit 'N Forget S.S., 12V)
Enhance highway signaling safety and operational efficiency with the Truck-Lite 44221Y Super 44 LED Rear Turn Signal Light. Designed for heavy-duty commercial trucks, trailers, utility vehicles, and fleet equipment, this 4-inch round yellow turn signal features a 42-diode LED array that illuminates faster than traditional incandescent lights—providing trailing drivers up to an extra 3 feet of stopping distance for every 10 mph. Complete with an integrated gray polycarbonate flange mount and Truck-Lite's corrosion-resistant Fit 'N Forget® S.S. connection, the 44221Y delivers reliable, low-draw performance for demanding environments.
When safety and stopping distances matter most, the Truck-Lite 44221Y Super 44 LED Rear Turn Light delivers rapid-response visual signaling. Powered by 42 high-intensity amber/yellow LEDs, this solid-state turn signal lamp illuminates instantly when activated. This fraction-of-a-second reaction advantage gives following drivers additional stopping distance, significantly reducing the risk of rear-end collisions in heavy traffic or emergency braking situations.
Featuring an integrated gray polycarbonate flange, the 44221Y mounts cleanly and securely directly onto vehicle bodies, service utility boxes, and trailer walls without requiring separate mounting grommets or brackets. Operating on a 12V DC system, its solid-state LED design consumes significantly less amperage (0.42 Minor / 0.65 Major) than incandescent lamps, reducing alternator load and battery strain while freeing up electrical capacity for other vehicle systems.
Because LEDs have no fragile filaments, the Truck-Lite 44221Y is completely impervious to the severe shock and vibration common in commercial transport. The fully epoxy-sealed polycarbonate lens and housing guard internal components against water, road chemicals, and dirt intrusion. Equipped with Truck-Lite’s signature Fit 'N Forget® Stainless Steel (S.S.) connector, this rear turn light resists terminal oxidation and moisture corrosion, ensuring a long, hassle-free service life backed by a Limited Lifetime Warranty.
