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Auto-jet Part #
GM10MH
Muffler
Chevrolet/GMC
Muffler for Chevrolet/GMC school buses with Caterpillar engines. CAT 3116 engine.
Model
Year Range
1986 & Up
Material
Outside Diameter
Overall Length
OEM Part Number
15555590, 15694486
United Muffler Equivalent
Also Known As
Grand Rock: HBBM2 | Truckex: 9131
Related Parts
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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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