top of page
Auto-jet Part #
6-4 ID-OD
Reducer
Reducer for school bus exhaust systems. 6" inlet, 4" outlet, Aluminized Steel.
Model
Year Range
Material
Aluminized Steel
Outside Diameter
Overall Length
OEM Part Number
United Muffler Equivalent
Also Known As
Cross-Reference Numbers
Related Parts
Auto-jet Part #
3-250 OD-OD
Part Type:
Reducer
Brand:
Auto-jet Part #
5-4 OD-ID
Part Type:
Reducer
Brand:
Auto-jet Part #
450-4 ID-OD
Part Type:
Reducer
Brand:
Auto-jet Part #
5-450 OD-OD
Part Type:
Reducer
Brand:
Auto-jet Part #
5-4 ID-OD
Part Type:
Reducer
Brand:
Auto-jet Part #
5-450 ID-OD
Part Type:
Reducer
Brand:
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.
bottom of page