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Hoosier Tank & Manufacturing, Inc. · Air System
HOSHT1231
In stock · ships from Knoxville
This is a steel air reservoir tank for heavy-duty truck and trailer air brake systems.
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Exact mounting orientation (top mount vs. inverted/bottom) and port configuration may vary; confirm port locations match your existing tank before ordering.
Part data verified against 4 catalog sources
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It stores compressed air from the compressor to ensure a steady supply for brake actuation and other pneumatic accessories. The tank is 12 inches in diameter and 29.5 inches long, providing approximately 2800–2850 cubic inches of air capacity. Replace it if the tank is rusted, leaking, or fails a pressure test, as a compromised reservoir can lead to unsafe brake performance.
Part Number: HOSHT1231
AIR TANK 12
Unit: ea
Dealer: Knox Trailers
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Parts commonly needed alongside air system