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
40202Y
In stock · ships from Knoxville
This is a Truck-Lite 40 Series incandescent front/park/turn signal lamp.
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
Generic fitment: commonly installed on many Class 8 trucks, trailers, and vocational vehicles that use 4-inch round combination lights. Exact vehicle-model fitment is not verified and should be confirmed by the installer.
Part data verified against 4 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 features a 4-inch round yellow (amber) polycarbonate lens and a sealed, heavy-duty single-bulb design that runs on 12 volts. The lamp connects via a 3-wire PL-3 plug and mounts in a standard 4.5-inch hole using a grommet (grommet sold separately). It is commonly used as a front turn signal and parking light on heavy-duty trucks and trailers and meets DOT FMVSS 108 requirements for vehicles up to 80 inches wide, while also satisfying reflex, tail, or clearance functions on wider vehicles. The shock-mount design helps extend bulb life by reducing vibration.
Part Number: 40202Y
4 AMBER MARKER LIGHT
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting