4 Inch Round LED Tail Light โ 39-Diode Red โ Replaces Truck-lite 4050
Regular price
$20.57
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Fitment
Fits these trucks
Heavy-duty trucks and trailers - universal 4 in round grommet-mount S/T/T position
Always confirm your year, make & model before ordering.
Part numbers
OEM & interchange numbers
5 cross-refsTruck-Lite 4050 Truck-Lite 44030R Grote G4002 Optronics STL55RB Peterson 420R-3
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview
Upgrade your vehicle's visibility and safety with the 4 Inch Round LED Tail Light by Automann. This high-output 12V LED lamp is engineered to provide crisp, instantaneous signaling for braking, turning, and tail-light functions. Whether you are outfitting a heavy-duty tractor or a commercial trailer, this 4 Inch Round LED Tail Light offers a modern, energy-efficient alternative to traditional incandescent lighting.
High-Intensity 39-Diode Performance: The 4 Inch Round LED Tail Light Advantage
The 4 Inch Round LED Tail Light (Automann Part # 571.LD40R39) features 39 high-lumen diodes encased in a sonically sealed polycarbonate lens. This rugged construction effectively blocks moisture and road debris, ensuring the internal electronics remain protected in even the harshest environments. Note: The integrated PL3 connector on the back plate allows for a seamless "plug-and-play" installation, reducing maintenance time for both driver and passenger side lighting panels.
As we continue to build the largest inventory of commercial truck parts in Illinois, we prioritize lighting solutions that keep your fleet DOT-compliant. This LED unit is a direct professional-grade replacement for Truck-lite 4050, Grote G4002, and Optronics STL55RB. By switching to LED technology, you eliminate the frequent maintenance associated with burnt-out bulbs and benefit from a faster "rise time," giving following drivers more time to react during braking.
Comprehensive Compatibility & Specifications
To ensure your trailer meets all safety regulations, please verify the technical details and cross-reference numbers below:
- Direct Replacement For: Truck-lite 4050, 44030R, Grote G4002, Optronics STL55RB, Peterson 420R-3
- Functions: Stop, Turn, and Tail Lamp (S/T/T)
- Diode Count: 39 High-Lumen Red LEDs
- Lens Material: Sonically Welded Polycarbonate (Waterproof)
- Connection: Integrated PL3 (3-Pin) Connector
- Mounting: Fits Standard 4-Inch Round Rubber Grommets
- Compliance: Fully meets DOT, SAE, and FMVSS 108 standards
- Position: Universal (Fits LH or RH rear positions)
Specifications
Function
Stop / Turn / Tail (S/T/T)
Size
4 in round (4.31 in lens face)
Light Source
24 LED diodes
Voltage
12V (0.38A major / 0.03A minor)
Connector
PL-3 right-angle
Mounting
Grommet (standard 4 in open-back)
Lens
Red polycarbonate
Position
Universal (LH or RH)
Compliance
DOT, SAE, FMVSS-108
Weight
0.3 lbs
Package Dims
4.375 x 4.375 x 1.5 in
Questions
Will this fit my truck?
This part fits Heavy-duty trucks and trailers - universal 4 in round grommet-mount S/T/T position. Always confirm your year, make and model before ordering.
What part numbers does it replace?
Yes. It is a direct replacement that interchanges with Truck-Lite 4050, Truck-Lite 44030R, Grote G4002, Optronics STL55RB, Peterson 420R-3.
How fast does it ship?
In-stock orders placed before 12 PM Central on business days ship the same day from our Hanover Park, IL warehouse, and typically arrive in 2 to 5 business days anywhere in the USA.
What's your return policy?
Unused items in original packaging can be returned within 30 days, backed by our 30-day money-back guarantee. If we ship the wrong part, we cover the return label and send the correct one.