Partsam 4 Inch Round LED Trailer Tail Lights - 4-Pack Red, 12-LED Waterproof Sealed Flush-Mount

These Partsam 4" round red LED lights are a sealed, waterproof 12V trailer tail light kit that combines brake, stop/turn and running light functions in a recessed flush-mount housing.

Designed for trailers, trucks, RVs, boats and utility vehicles, this four-piece kit offers bright, low-current LED illumination in a compact 4-inch package. Each unit features 12 high-efficiency diodes behind a red lens, a sealed housing rated to resist water and dust, and a recessed grommet mount that accepts a standard 3-prong plug for quick installation. The lights operate on 12V DC systems and are constructed to handle vibration and outdoor exposure without bulky bulbs or frequent maintenance.

How do these lights fit my trailer or vehicle?

The fixtures are made for recessed flush mounting and include grommet rings sized to fit a 4" inner diameter cutout. They accept the standard three-prong trailer plug and come with pigtail wires color-coded for simple wiring. If your vehicle uses 12V systems (8–16V compatible), these lights will integrate with most trailers, RVs, utility trucks and boats.

• Approx. 4" inner diameter, 5" outer grommet ring for recessed mounts
• Standard 3-prong plug compatibility with included pigtails
• Works on 8–16V DC systems; optimized for 12V
• Color-coded wiring: white (ground), red (high-brightness), black (low-brightness)

What lighting functions are included and how bright are they?

Each lens houses 12 LED diodes and performs three functions: stop/brake, turn signal, and tail/running light. LEDs reach full brightness instantly, draw less current than incandescent bulbs, and deliver consistent visibility in daylight and low-light conditions. The design increases longevity and reduces the need for frequent replacements.

• 12 LEDs per unit for clear, even illumination
• Instant-on response for turn and brake signaling
• Lower power draw and less heat generation than incandescent lamps
• Sealed construction keeps LEDs protected from moisture and corrosion

Are these lights durable and weatherproof enough for marine or heavy-duty use?

Yes — each light is water-tight sealed and rated to withstand exposure to rain, dust, and road debris. The housings are impact resistant and designed to resist corrosion, making them suitable for marine trailers, utility vehicles, and applications where vibration and salt spray are concerns. Routine cleaning extends optical clarity but frequent maintenance is unnecessary.

• IP65-level protection against dust and low-pressure water jets
• Impact-resistant construction to handle shock and vibration
• Sealed lens and housing to prevent moisture intrusion
• Red polycarbonate lens resists fading and cracking

Who is this for? Installers, fleet managers, trailer owners and DIYers who need a compact, reliable lighting upgrade will benefit from the Partsam four-piece 4" LED kit. It’s aimed at anyone seeking brighter, longer-lasting tail and brake lights that are easy to wire into standard 12V systems and built to resist harsh outdoor conditions. Choose this kit if you want quick installation, improved visibility, and low-maintenance performance for trailers, RVs, trucks, boats and other light vehicles.