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
MCL65RB
In stock · ships from Knoxville
The Optronics MCL65RB is a red LED thin-line marker/clearance light commonly used on heavy-duty trucks, cargo trailers, and recreational vehicles.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 5 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Mounting bracket (A-65B) and 2-pin wiring plug (A-65P) sold separately. Typically used as a front clearance or side marker light.
Part data verified against 5 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It provides a bright, long-lasting signal for side marker and front/rear clearance functions, meeting DOT/SAE P2 requirements. The sealed polycarbonate housing resists moisture and vibration, making it a reliable replacement for cracked, faded, or non-functional incandescent lights. It operates on 12.8V DC with a very low current draw of 0.054 amps.
Part Number: MCL65RB
LED LIGHT
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting