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January 12, 2023 Service bulletin

The emissions exemption expired on 12/31/2022 for certain pre-production vehicles equipped with PACCAR...

Kenworth technical service bulletin R2202 for 2023 Kenworth T680, 2023 Peterbilt 579 and 2023 Kenworth T880 and others.

Bulletin number
R2202
Component
Engine and engine cooling
Summary
The emissions exemption expired on 12/31/2022 for certain pre-production vehicles equipped with PACCAR Model Year 2023 MX engines. Production-level engine, VECU, and Digital Display software is now available to make these vehicles compliant. New Engine Emissions and Clean Idle labels will be installed.

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