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Auto-jet Part #
400CATCTR
Universal Muffler
Catalytic Muffler. B-Series Cummins engine, 4" inlet, 4" outlet.
Model
Year Range
2007 & Up
Material
Outside Diameter
Overall Length
OEM Part Number
6124-0913
United Muffler Equivalent
Also Known As
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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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