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September 28, 2022 Service bulletin

Service Solution for Calendar Year 2022 Espar D2 and D4 Heater Shortages

Western Star technical service bulletin SS731-WST2022 for 2023 Western Star 49X.

Bulletin number
SS731-WST2022
Component
Equipment
Summary
Service Solution for Calendar Year 2022 Espar D2 and D4 Heater Shortages. Eberspacher has experienced ongoing shortages of the microprocessor that is used in the controller board for many different Espar heaters, including the D2 and D4 Airtronic heaters used in 49X.

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