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Auto-jet Part #
TP4001015
Muffler
Thomas Built
Muffler for Thomas Built school buses with Caterpillar and Cummins engines. CAT 3116 | CAT 3208 engine.
Model
Year Range
1992 & Up
Material
Outside Diameter
Overall Length
OEM Part Number
6124-0008
United Muffler Equivalent
Also Known As
Donaldson: M120100 | Grand Rock: M125 | Nelson: 86125M | Truckex: 3614 | Walker: 21174
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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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