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.
Post Onsite · Electrical & Lighting
402089
In stock · ships from Knoxville
A backup lamp is a rear-facing white light that activates when the vehicle is in reverse, providing illumination for the driver and alerting others.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
The Truck-lite 40 Series backup lamp (part numbers 40204, 40204-3, 40204-P) is a 4-inch round sealed incandescent light with a polycarbonate lens and housing, shock-mounted bulb, and a grommet mount. It is designed for 12V systems and meets DOT/SAE standards. The exact part number 402089 was not found in the available search results, but it may be a similar product or an upgraded LED version. The price of $162.50 suggests a different assembly, possibly an LED model or a complete housing specific to certain trucks.
Part Number: 402089
BACK-UP LAMP
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
