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
MCL63RB
In stock · ships from Knoxville
The MCL63RB is a red LED marker/clearance light designed for heavy-duty trucks, trailers, and cargo vehicles.
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
Works as a side marker or clearance light. Requires a 2-pin wiring plug and a mounting bracket (sold separately); can be snap-in mounted when used with the ABS base A-65B.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It uses a thin, sealed polycarbonate housing with four bright diodes and a Micro-Flex™ reflector to make the vehicle visible from the side and rear. These lights replace older incandescent bulbs, draw very little current, and are weatherproof, reducing maintenance and improving safety. You typically replace them when a light is cracked, filled with moisture, or no longer illuminates.
Part Number: MCL63RB
LED LIGHT, MICROFLEX THINLINE
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting