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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 with Mercedes MBE 900 uses application-specific inlet and outlet dimensions. It is not a standard HD truck muffler. Wrong-fit parts create leak points and back pressure.

FS65 with Cummins ISB uses a different inlet configuration from the MBE 900. Confirm the engine before ordering.

FC2 is a different chassis from the FS65. Do not cross-reference parts.

Freightliner School Bus Exhaust Parts We Stock

  • Mufflers, FS65 application-specific for MBE 900 and ISB

  • Flex pipes, FS65 turbo-to-downpipe connection

  • Hangers and bracket hardware, MBE 900 and ISB configurations use different bracket locations

  • 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.

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