Cummins 400 ISL diesel particulate filter
I am getting a new to me 2007 Itasca Horizon DP with the 8.9 Cummins ISL 400hp engine. The EPA 2007 rules required a diesel particulate filter. Was that a requirement on 2008 model year or 2007 engine...
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Is that a Freightliner chassis? If so, you can call them with the VIN. They'd have tons of information.
