Safety Recall, SC0411, Jost Fifth Wheel - 2019 Mack Anthem

NHTSA Campaign Number: 18V543
Manufacturer Mack Trucks, Inc.
Potential Number of Units Affected 13


Trailer may Separate from Fifth Wheel

If the trailer separates from the tractor, it can increase the risk of a crash.



Mack Trucks, Inc. (Mack) is recalling certain 2019 Mack Anthem trucks equipped with Jost fifth wheel couplings. The fifth wheel may have an outboard slider bracket that is too narrow, possibly allowing the trailer to separate from the tractor.



Mack will notify owners, and dealers will inspect the fifth wheel slider bracket, replacing it as necessary, free of charge. The recall is expected to begin September 14, 2018. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0411.



Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to


To: U.S. and Canada Distributors
Dealer Principals
Service Managers
Warranty Managers
Parts Managers
Sales Managers
Bulletin: SRA-M-0411
Date: Sept. 11, 2018
Action Required? YES


From: Regulatory Affairs Department

Subject: Safety Recall, SC0411, Jost Fifth Wheel


Jost International (Jost) may have sent a fifth wheel (1 in total) with a prototype component to Mack Truck’s manufacturing facility. Specifically, the slide bracket width is too narrow. The potential consequence is that the fifth wheel may fail and cause the trailer to separate from the tractor.


Models/ Model Years Affected:

Certain 2018 Anthem model vehicles manufactured from June 9, 2018 to June 29, 2018 with a Jost brand fifth wheel


Vehicle Quantities:

9 vehicles (all U.S.)


Dealer’s Responsibility:

The National Traffic and Motor Vehicle Safety Act and Canadian Motor Vehicle Safety Act requires dealers to ensure that all new and used vehicles are free of safety defects and comply with all relevant safety standards at the time of delivery to the consumer.

Dealers should make their personnel aware of the safety recall. In the event that a dealer has a vehicle included in the safety recall in their inventory to be sold, the condition must be corrected before releasing it to a customer.


Release Schedule: 

September 11, 2018 Notify dealers.

  • Safety recall alert posted on dealer portal

By October 1, 2018 Notify Owners

  • Warranty coverage loaded in UCHP
  • Inspection/ replacement literature available to dealers and service centers.
  • Letters mailed to owners



Contact the Regulatory Affairs Department at [email protected] if you have questions.



© 2018 Mack Trucks, Inc For internal use only.

For the most current and accurate information, always refer to Trucks Dealer Portal for the electronic version of this document.

Safety Recall, SC0411, Jost Fifth Wheel

Sept. 11, 2018

Download (PDF, 59KB)

Recall Acknowledgement

September 11, 2018

Download (PDF, 240KB)


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