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June 10, 2020 Service bulletin

Fix as Fail: For all conventional models, except 387/587, equipped with Side-of-Cab (“SOC”) exhaust and...

Peterbilt technical service bulletin 43-067 for 2007-2016, 2021 Peterbilt 379, 2007-2021 Peterbilt 579 and 2007-2021 Peterbilt 389 and others.

Bulletin number
43-067
Component
Engine and engine cooling: exhaust system
Summary
Fix as Fail: For all conventional models, except 387/587, equipped with Side-of-Cab (“SOC”) exhaust and built from 03/6/2006 to 1/20/2020, the clamps that secure the SOC exhaust stacks may not be tightened properly. This may allow the exhaust stack to rotate and contact the cab or sleeper.

Owners of these vehicles have filed 24 complaints in the engine category.

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