Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Optronics · Electrical & Lighting
MCL45RB
In stock · ships from Knoxville
This is a red LED marker and clearance light designed for heavy-duty trucks and trailers.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 4 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Universal fit for any commercial or recreational vehicle requiring a surface-mount red marker/clearance light with 3-inch mounting centers. PC-rated for dual function when mounted at a 45-degree angle.
Part data verified against 5 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It’s a surface-mount oblong light that uses 10 LEDs to provide a bright, long-lasting signal to other drivers. The light is PC-rated, meaning it can function as both a clearance light and a 90-degree side marker when mounted at a 45-degree angle. It replaces old or failed incandescent or LED lights and is commonly used on semi-trailers, truck cabs, and cargo trailers.
Part Number: MCL45RB
LED MARKER LIGHT, RED
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting