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Auto-jet Part #
TCFOASS
Muffler
Blue Bird
Muffler for Blue Bird school buses with Cummins engines. B-Series engine.
Model
Year Range
1988 & Up
Material
Outside Diameter
Overall Length
OEM Part Number
01668326, 01668383
United Muffler Equivalent
Also Known As
Grand Rock: SB4-8573BB | Truckex: 48573
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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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