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Service bulletin SF619

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10189616
Published by NHTSA2021-03-31
Manufacturer's numberSF619
Manufacturer's date2021-03-30
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Field Service Campaign for Cascadia Cummins Natural Gas Engine Exhaust Shield. On certain vehicles, there may be early heat degradation at the front right cab mount due to excessive heat exposure. An exhaust shield will be installed on all vehicles involved.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
FREIGHTLINER CASCADIA2019, 2020, 2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
21V0730002021-02-12. ENGINE
18V5810002018-08-30. ENGINE AND ENGINE COOLING:ENGINE:DIESEL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
FleetCom_Heater Core2026-01-08. Other. Fleet Communications for Heater Core Plugging
FleetCom_SS 3163-FTL2025-12-06. Other. Fleet Communications for Power Steering Reservoir Fill Cap Venting
FleetCom_Low Coolant2025-12-05. Other. Fleet Communications for Low Coolant Sensor
CXA_10_25_Low Coolant2025-11-05. Other. CX Advocate for P4, WST X-Series, DD Engines Low/Critical Low Coolant Warnings
CXA_10_25_Conmet Oil Pan2025-11-05. Other. CX Advocate for ConMet Oil Pan Insert Additional Issues
CXA_9_25_Tech Questions2025-10-03. Other. CX Advocate for technical questions/issues raised
CXA_8_25_Tech Questions2025-09-02. Other. CX Advocate for technical questions/issues raised
CXA 3_25_NOx2025-04-02. Other. CX Advocate for NOx conversion low faults
CXA 2_25_Turbo Oil Drain2025-03-04. Other. CX Advocate for turbo oil drain cracking
CXA 2_25_NOx2025-03-04. Other. CX Advocate for NOx conversion low faults