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NHTSA campaign 21V428000

Heartland Recreational Vehicles, LLC Recall 21V-428: Propane Regulator May Fail and Cause Fire

NHTSA recall 21V428000 was reported by Heartland Recreational Vehicles, LLC on June 4, 2021, with 22,326 vehicles potentially affected (per NHTSA). NHTSA's record lists the Heartland Mallard, Heartland Prowler, Heartland Sundance and more for model years 2018–2021. Owners were notified on August 3, 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 21V428000 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
21V428000 (also written 21V-428 or 21V428)
Filed by
Heartland Recreational Vehicles, LLC
Report received
Potentially affected
22,326 vehicles (per NHTSA)
Component
Equipment — Recreational Vehicle/Trailer — LPG Systems
Owners notified

Repair completion: 18.8% (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 21V428000. 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.

Cruiser

All Cruiser recalls

Cruiser RV

All Cruiser RV recalls

Heartland

All Heartland recalls

NHTSA's recall notice

As NHTSA's recall record states it for campaign 21V428000.

Defect description

Heartland Recreational Vehicles, LLC. (Heartland) is recalling certain 2018-2021 Mallard, Shadow Cruiser, Sundance XLTTT, Wilderness, Prowler, Trail Runner, 2018-2019 Pioneer, Terry Classic, 2020-2021 Lithium, and 2021 North Trail trailers equipped with a Winntec model 6020 two-stage propane regulator. The regulator may fail, causing an increase in propane pressure.

Safety consequence

Increased propane pressure can enlarge the flames in gas appliances, increasing the risk of a fire.

Manufacturer remedy

Dealers will replace the regulator and test the propane system for leaks, free of charge. Owner notification letters were mailed August 3, 2021. Owners may contact Heartland customer service at 1-877-262-8032.

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 21V428000

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.