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
21251Y
In stock · ships from Knoxville
This is a rectangular yellow LED marker and clearance light 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 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
No specific vehicle fitment found; uses industry-standard mounting.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It uses two diodes to provide bright illumination with low power draw, and its sealed polycarbonate lens is reflectorized for visibility. The light mounts with two screws into standard hole patterns and replaces old incandescent lights or upgrades vehicle lighting to LED for longer life and reliability. It meets PC (combination clearance and side marker) and other DOT standards.
Part Number: 21251Y
LED AMBER MARKER LIGHT
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
