Freightliner School Bus Exhaust Parts
FS65, FC2
Auto-jet manufactures Freightliner school bus exhaust parts for FS65 and FC2 chassis. Most FS65 configurations use the Mercedes MBE 900 engine, which requires application-specific exhaust components that standard heavy-duty truck parts will not fit.
Freightliner School Bus Exhaust Parts by Chassis and Engine
FS65 and FC2 are separate chassis. Do not cross-reference parts between them.
Engine choice sets front pipe fitment, since the front pipe connects directly to the turbo outlet. FS65 configurations run Mercedes MBE 900 or Cummins ISB, and each uses a different front pipe. Mufflers and most tailpipes are shared more widely across engines once past the front pipe.
Confirm chassis, engine, and model year before ordering.
Freightliner School Bus Exhaust Parts We Stock
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Mufflers, FS65 application-specific for MBE 900 and ISB
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Flex pipes, FS65 turbo-to-downpipe connection
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Hangers and bracket hardware, MBE 900 and ISB configurations use different bracket locations
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Seal clamps for the FS65 muffler inlet, call to confirm the correct size for your application
How to Confirm the Right Freightliner Exhaust Part
Chassis (FS65 or FC2), engine (MBE 900 or ISB), and model year. FS65 and FC2 are separate chassis. Do not order FS65 parts for FC2 applications. When in doubt, call 800-247-5391.
Frequently Asked Questions
Can I use a standard heavy-duty truck muffler on a Freightliner FS65?
Not on MBE 900 applications. The Mercedes engine has specific connection dimensions that differ from standard HD truck configurations.
Are Freightliner school bus exhaust parts in stock?
Yes. Auto-jet stocks Freightliner exhaust parts with same-day shipping from Clive, Iowa on most items.
What information do I need to order a Freightliner exhaust part?
Chassis, engine, and model year. Have those ready and call 800-247-5391 for a same-day quote.