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.

Truck-Lite · Electrical & Lighting
TRU21251Y
In stock · ships from Knoxville
This is a 2-inch by 6-inch rectangular LED marker/clearance light with a yellow lens.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Universal fit
Universal 2-screw mount, 2"x6" rectangular marker/clearance light commonly used on heavy-duty trucks, trailers, and commercial vehicles.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 1 of 1.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It uses two diodes and a reflectorized polycarbonate housing to make the vehicle more visible from the side, serving as a side marker or clearance light on heavy-duty trucks and trailers. It draws very little current and is sealed for long life, so you typically replace it when the lens is damaged or the LEDs stop working. The light mounts with two screws and uses a standard ‘Fit ‘N Forget’ plug connection for 12-volt systems.
Part Number: TRU21251Y
LED LIGHT, MODEL 21
Unit: ea
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting