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Thomas Built Straight Tubing - Auto-jet #400STP38.25
Straight Tubing
Thomas Built
Straight Tubing for Thomas Built school buses with Caterpillar engines.
Model
Year Range
1997 & Up
Material
Stainless Steel
Outside Diameter
Overall Length
OEM Part Number
6224-1288
United Muffler Equivalent
Also Known As

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Auto-jet Part #
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Provide your OEM# when ordering.
Exhaust parts vary by bus configuration even within the same model and year.
Your OEM number is the most reliable way to confirm correct fitment.
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