GENESIS-AMTRAN BUS EXHAUST
Introduced as the replacement for the long-running International Harvester 1853FC forward-control chassis, the 3900 was first produced in 1990. Along with its IHC predecessor, many body manufacturers sourced the 3900 as the replacement for the discontinued General Motors S7 and Asia-Smith Motors forward-control chassis. By the mid-1990s, Navistar subsidiary AmTran became the sole user of the 3900. In 2010, production of front-engine bus chassis was discontinued.
All 3900 chassis were powered by variations of the DT engine family.
While a bare chassis instead of a cowled chassis, the 3900/3000 maintained mechanical commonality with the 3800 conventional. This included shared powertrain and suspension components, while interior parts included Navistar instrument panels and steering columns. The 3800 itself was based on the International 4700/4900
MaxxForce 9 (IC RC only)
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