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Moisture and road spray can ruin unsealed lights fast, but this one’s built to handle the wet. The Optronics Aero Pro tail light has a sealed, waterproof housing and lens that keep out water and debris. That makes it ideal for trailers that see regular exposure to rain, wash-downs, and even full submersion. The circuit board stays protected, so you won’t lose your lights halfway through a trip.
Keeping wiring simple matters when you’re maintaining a trailer. This rectangular 7-7/8" x 3-1/4" incandescent light covers seven functions in one unit—stop, turn, tail, rear clearance, rear reflex, side marker, and side reflex. You don’t need separate reflectors or clearance lamps because it’s all built in. It’s made for trailers more than 80" wide and mounts easily on the passenger side for full visibility compliance.
Rough roads can shake bulbs loose or rattle filaments apart. This light’s shock-proof sockets help protect the 1157 bulbs from vibration damage while keeping them seated securely. The durable plastic housing with a screw-on lens adds another layer of toughness for long-term reliability in all kinds of use.
No complicated brackets or adapters here. The Aero Pro tail light mounts using the included studs and nuts spaced 2" on center. With its simple 3-wire design—hardwiring directly to a standard 12V DC system—it’s an easy swap for most trailer setups. The passenger side configuration pairs directly with the ST37RB driver side version if you want matching lights.
If you’re replacing older lights, this one’s ready to fit right in. It works as an exact replacement for Wesbar #3571, so you can refresh your trailer lighting without drilling new holes or splicing unfamiliar connectors. With DOT compliance and a 3-year limited warranty, it’s a dependable choice for keeping your trailer safe and visible trip after trip.
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
Don
9/3/2025
Over a thousand freeway miles and thirty launch and retrieves put on these tail lamp without any problems. Thumbs up.
Greg S.
9/30/2022
Trailer taillight replacement is still working good...... No issues
John D.
1/30/2018
Awesome! Happy with my purchase!
Mark
4/3/2018
Working great. No problems.
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Blaine
3/23/2026
Exactly what I wanted!