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.
Hoosier Tank & Mfg. Inc. · Air System
HOS1243
In stock · ships from Knoxville
This is a top-mount air reservoir tank manufactured by Hoosier Tank for heavy-duty truck and trailer air brake systems.
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
Top-mount design fits many trailer makes and models. Verify port layout, length, and diameter match your existing tank before ordering.
Part data verified against 3 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It holds approximately 2850 cubic inches of compressed air, supplying consistent pressure to the brakes and auxiliary components. The tank is 29-1/2 inches long, 12 inches in diameter, and mounts with four brackets. It features two main ports (1/2" and 3/4" NPT), a 1/4" drain, and a 3/8" end port. Replace the tank if it shows rust-through, pitting, or leaks that cannot be repaired, as air system integrity is critical for safe brake operation.
Part Number: HOS1243
AIR TANK
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
