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
19721
In stock · ships from Knoxville
A heavy-duty gray polycarbonate mounting base for Truck-Lite Model 19 Series 1"x4" rectangular clearance or marker lights.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 3 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
This is a base for a single marker light. The inventory title 'BASE FOR 3 MARKER LIGHT' likely refers to a pack quantity or is a misdescription; the part itself mounts one lamp.
Part data verified against 5 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 provides a secure two-screw bracket mount for the lamp and includes a pre-wired "hot" lead with a stripped end for direct power connection, while the light grounds through the mounting screws. This base is commonly replaced when it becomes cracked, corroded, or the internal wiring fails, ensuring the marker light stays securely attached and electrically connected on trailers, dry vans, or commercial trucks.
Part Number: 19721
BASE FOR 3 MARKER LIGHT
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
