2017–2021 Newmar Dutch Star, 2017–2019 Newmar Mountain Aire, 2020–2021 Newmar New Aire and 1 other model Recall: Sealing washer may not seat correctly in the pilot boreholes, allowing the…
NHTSA campaign 21V506000 · Fuel System, Diesel · filed Jul 2, 2021 · verified Jul 30, 2026
The defect
Newmar Corporation (Newmar) is recalling certain 2019 Mountain Aire, 2020-2021 New Aire, 2020-2022 Super Star, 2018-2021 Ventana, and Dutch Star vehicles equipped with certain Cummins diesel engines. The sealing washer may not seat correctly in the pilot boreholes, allowing the high-pressure fuel rail assembly to leak.
The risk
A fuel leak in the presence of an ignition source increases the risk of a fire.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Cummins service centers will inspect the rail threads and fuel lines, and replace the rail as necessary, free of charge. Owner notification letters were mailed on August 24, 2021. Owners may contact Newmar customer service at 1-800-731-8300. Newmar's number for this recall is Cummins 21E-32.
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.
Affected vehicles
Related recalls
More Newmar Dutch Star recalls
- 2022–2023 Newmar Dutch Star and 3 other models — Pedestal mounting plate may be improperly welded, causing…
- 2023 Newmar Dutch Star — Adjustable brake pedal may come into contact with the dash…
- 2022–2023 Newmar Dutch Star and 5 other models — These heaters could have an incorrect fuel line installed…
- 2021–2023 Newmar Bay Star and 6 other models — Service valves on the LPG tanks may be improperly…
- 2019–2022 Newmar Bay Star and 11 other models — Wiring under the seats may be incorrectly secured, which…
Other campaigns involving Newmar vehicles
Source: NHTSA recall database, campaign 21V506000 (manufacturer number Cummins 21E-032). Data last verified Jul 30, 2026.