NHTSA campaign 21V574000 · Mack campaign SC0428
Mack Recall 21V-574: Loose Front Suspension Bolts
NHTSA recall 21V574000 (Mack campaign SC0428) was reported by Mack Trucks, Inc. on July 27, 2021, with 60 vehicles potentially affected (per NHTSA). NHTSA's record lists the Mack MD for the 2022 model year. Owners were notified on August 17, 2021, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 21V574000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 21V574000 (also written 21V-574 or 21V574)
- Filed by
- Mack Trucks, Inc.
- Mack campaign number
- SC0428
- Report received
- Potentially affected
- 60 vehicles (per NHTSA)
- Component
- Suspension — Front — Springs — Leaf Spring Assembly — Hanger,Bracket
- Owners notified
Repair completion: 93.33% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 21V574000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Mack
Mack MD
NHTSA's recall notice
As NHTSA's recall record states it for campaign 21V574000.
Defect description
Mack Trucks, Inc. (Mack) is recalling certain 2022 Medium-Duty Trucks. The spring hanger brackets on the front suspension may have loose bolts.
Safety consequence
Loose suspension bolts can detach, possibly resulting in a loss of vehicle control and increasing the risk of a crash.
Manufacturer remedy
Dealers will tighten the spring hanger bracket bolts, free of charge. Owner notification letters were mailed on August 17, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0428.
Notes
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 www.nhtsa.gov.
Sources
Official NHTSA notice for recall 21V574000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.