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Truck-Lite · Electrical & Lighting
50816
In stock · ships from Knoxville
The Truck-Lite 50816 is a gray junction box cap designed to seal and protect the internal wiring connections of a 50 Series round junction box (commonly installed on heavy-duty trucks and trailers).
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This cap is engineered specifically for the Truck-Lite 50 Series round junction boxes. It is not a universal cover; confirm your junction box model is a 50800 or 50801 before ordering.
Part data verified against 5 catalog sources
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It threads or screws onto the box and includes a rubber O-ring to create a weatherproof seal against moisture, road salt, and dirt. You typically replace this cap when the original is cracked, missing, or damaged to prevent terminal corrosion that can lead to flickering lights or electrical failures on your commercial vehicle.
Part Number: 50816
JUNCTION BOX CAP
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
