4-Inch Round 16 LED Truck Tail Light – Bright, Durable & Versatile

Upgrade your truck, trailer, or tractor with this heavy-duty 4-inch round 16 LED tail light. Designed to handle the demands of commercial and heavy-duty vehicles, this compact yet powerful lamp delivers ultra-bright illumination for stop, brake, turn signal, tail, and reverse functions — all in one unit. Compatible with 12V and 24V systems, it's a reliable and affordable lighting solution for a wide range of vehicles.

Made in Mainland China.

Key Features

16 High-Brightness LEDs: Super-bright output ensures excellent visibility in all weather and lighting conditions, keeping you and others safe on the road.
Multi-Function: Serves as a stop light, brake light, turn signal, tail light, and reverse light — a true all-in-one solution.
Wide Voltage Compatibility: Works seamlessly on both 12V and 24V electrical systems, making it suitable for a vast range of trucks and trailers.
Durable Construction: Built with ABS plastic, polycarbonate (PC) lens, and a stainless steel housing for long-lasting performance even in tough environments.
Universal Fit: Ideal for general trucks, semi-trailers, dump trucks, tractors, buses, boats, and other special vehicles.
Easy Installation: Simple 2-wire connection makes installation quick and straightforward — no special tools required.
Compact Size: Outer diameter of 140mm (5.4 in), inner diameter of 105mm (4.1 in), with a slim profile of just 15mm depth — fits neatly without bulk.

Specifications

Voltage: 12V – 24V
Number of LEDs: 16
Material: ABS + PC + Stainless Steel
Outer Diameter: 140mm / 5.4 inches
Inner Diameter: 105mm / 4.1 inches
Overall Size: 13.6 × 13.6 × 1.5 cm (5.35 × 5.35 × 0.59 inches)
Functions: Stop / Brake / Turn Signal / Tail / Reverse
Wire Connection: 2 Wires
Vehicle Placement: Front / Rear, Left / Right

Compatible Vehicles

This versatile tail light fits a wide range of vehicles, including:

General Trucks & Semi-Trailers
Dump Trucks & Tractors
Buses & RVs
Boats & Marine Vessels
Special & Agricultural Vehicles

Package Includes

1× 4-inch Round 16 LED Tail Light

For more information on vehicle lighting safety standards, visit the U.S. Consumer Product Safety Commission (CPSC) for guidance on automotive lighting safety.

Learn more: Automotive lighting

Frequently Asked Questions

Q: Is this 4-inch round LED tail light compatible with both 12V and 24V truck systems?

A: Yes! This tail light is designed to work with both 12V and 24V electrical systems, making it compatible with a wide range of vehicles including semi-trucks, trailers, tractors, dump trucks, and buses.

Q: How many functions does this LED truck tail light perform?

A: This single unit serves five functions: stop light, brake light, turn signal (amber), tail light, and reverse light — making it a cost-effective, all-in-one solution for your commercial vehicle lighting needs.

Q: Is this tail light easy to install on my trailer or semi-truck?

A: Absolutely. The light uses a simple 2-wire connection system, making installation quick and straightforward for most users. No special wiring harnesses or tools are required.

Q: What materials are used in this LED tail light?

A: The housing is constructed from durable ABS plastic and stainless steel, while the lens is made from polycarbonate (PC) — a combination designed to withstand vibration, moisture, and harsh road conditions.