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Auto-jet Part #
400CATSI
Universal Muffler
Blue Bird, Thomas Built
Catalytic Muffler. 409 Stainless Steel.
Model
Year Range
2007 & Up
Material
409 Stainless Steel
Outside Diameter
Overall Length
OEM Part Number
6124-0910, 6124-0911, 6124-0030
United Muffler Equivalent
Also Known As
Grand Rock: M657CT | Truckex: 4261
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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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