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Polar · Trailer Parts
064638
In stock · ships from Knoxville
This is a heavy-duty steel upper coupler plate (often called a fifth wheel plate) that bolts to the underside of a trailer's front structure.
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While branded for Polar, the plate may fit other tank trailer models requiring a 40-5/8 x 2 x 37-1/2 inch upper coupler with 19 bolt holes. Verify hole pattern and dimensions before welding.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
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It mates with the tractor's fifth wheel coupling to support the trailer's load and allow safe articulation. Typically replaced when the plate is cracked, worn, or corroded, especially on tank trailers that see harsh service. This Polar plate measures 40-5/8 inches long, 2 inches thick, and 37-1/2 inches wide, with a 19-bolt hole pattern for secure mounting.
Part Number: 064638
UPPER COUPLER (POLAR) (2 X 401/2)
Unit: ea
Dealer: Post Onsite
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