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Auto-jet Part #
TD400 SS
Universal Diffuser
Diffuser for school bus exhaust systems.
Model
Year Range
Material
Outside Diameter
Overall Length
OEM Part Number
United Muffler Equivalent
Also Known As
Cross-Reference Numbers
Related Parts
Auto-jet Part #
NAVDIFF2
Part Type:
Diffuser
Brand:
Navistar International
Auto-jet Part #
GMDIFF
Part Type:
Diffuser
Brand:
Chevrolet/GMC
Auto-jet Part #
DAIMIT
Part Type:
Diffuser
Brand:
Universal
Auto-jet Part #
FRLDIFF
Part Type:
Diffuser
Brand:
Freightliner
Auto-jet Part #
TD300
Part Type:
Diffuser
Brand:
Universal
Auto-jet Part #
NAVDIFF1
Part Type:
Diffuser
Brand:
IC Bus
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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