RecallNotify
Sign up Check my VIN
Home/ Recalls/ Newmar/ 21V372
Campaign 21V372 Posted May 20, 2021 1,294 units

2017-2022 Newmar Motorhomes Recall 21V372: Fuel Rail

RN
Reviewed by the RecallNotify editorial team
Published May 23, 2026

Recall 21V372 covers 1,294 2017-2022 Newmar Dutch Star, Mountain Aire, Ventana and New Aire motorhomes with leaking fuel rails. Free repair at franchised Newmar dealers.

Newmar is recalling 1,294 2017-2022 Dutch Star, Mountain Aire, Ventana, and New Aire motorhomes because a sealing washer in the high pressure fuel rail assembly can seat incorrectly and allow a fuel leak. A fuel leak near an ignition source increases the risk of fire, and Newmar dealers will complete the recall repair free of charge.

Does this recall apply to your specific vehicle?

The official, free per-VIN recall check is run by NHTSA. Enter your VIN and we'll forward you directly — and add you to a free watchlist so you hear about new recalls for your vehicle.

Check my VIN at NHTSA

RecallNotify doesn't check your VIN — NHTSA's official tool does. We use your email only to alert you to new recalls.

What's wrong?

On 2017-2022 Newmar Mountain Aire, Dutch Star, Ventana, and New Aire motorhomes in recall 21V372, the issue is in the diesel engine fuel rail assembly. The fuel rail holds diesel fuel under high pressure and sends it to the engine injectors so the engine receives the right amount of fuel at the right time.

On affected motorhomes, a sealing washer in the fuel rail assembly does not seat correctly in the pilot bore holes. That bad seal lets pressurized diesel fuel leak from the rail. If the leak turns into a spray or mist and reaches an ignition source, it raises the risk of fire.

There is no warning sign before failure. The filing describes the diesel fuel spray as undetected, so owners should not count on a light, sound, smell, or drivability change before the leak becomes dangerous.

Who's affected?

Spans 4 Newmar diesel motorhome lines across the 2017-2022 model years, all tied to the same fuel rail component.

2018 Newmar Mountain Aire fuel system
2019 Newmar Mountain Aire fuel system
2017 Newmar Mountain Aire fuel system
2017 Newmar Dutch Star fuel system
2018 Newmar Dutch Star fuel system
Units affected1,294
Field incidentsNHTSA has logged no field incidents to date.

A matching year and model does not confirm inclusion. Check your VIN to confirm whether your specific motorhome is included.

What's the safety risk?

A fuel leak near an ignition source increases the risk of a fire. There is no warning sign before failure, so schedule the inspection soon and avoid ignition sources if you notice fuel odor or fuel on the ground. Repair is free at any franchised Newmar dealer.

What should I do?

  1. Check your VIN to confirm your 2017-2022 Newmar Mountain Aire, Dutch Star, Ventana, or New Aire motorhome is included in this recall.
  2. Contact a franchised Newmar dealer to schedule the free high pressure fuel rail inspection and rail replacement that fixes the sealing-washer leak path.
  3. Bring the recall notice if Newmar has mailed one. If not, reference recall number 21V372 when you call.
  4. Ask the dealer whether the motorhome is safe to drive before inspection if you see or smell fuel near the engine area.
  5. Call Newmar customer service at 1-800-731-8000 with questions about scheduling or dealer handling.

What happens at the repair

At the dealer, a Newmar technician inspects the high pressure fuel rail threads and replaces the rail if the threads or sealing area need correction. The recall repair is free, including parts and labor. Newmar also has a general reimbursement plan on file. If you've already paid for this same rail repair before the recall notice, contact Newmar customer service at 1-800-731-8000 and ask what documentation they need for a reimbursement claim.

ReimbursementReimbursement available

Timeline

May 20, 2021 NHTSA published the recall
July 19, 2021 Dealer notification began
July 19, 2021 Dealer notification ended
July 19, 2021 Interim owner notification (was planned for this date)
August 30, 2021 Owner notification mailed

Frequently asked questions

What is recall 21V372?

Recall 21V372 covers 1,294 2017-2022 Newmar Mountain Aire, Dutch Star, Ventana, and New Aire motorhomes with high-pressure fuel rail sealing washers that can seat incorrectly and let fuel leak. Newmar dealers will inspect the rail threads and replace the rail as necessary for free.

What should I do if my 2017-2022 Newmar Mountain Aire, Dutch Star, Ventana, or New Aire is on this recall?

Check your VIN to confirm your specific motorhome is included in recall 21V372. If it is included, call a franchised Newmar dealer or Newmar customer service at 1-800-731-8000 to schedule the fuel rail inspection. Reference recall 21V372 and Newmar's Cummins 21E-032 number when you call.

Is the recall repair free?

Yes. Federal recall law requires manufacturers to repair safety defects at no cost. Newmar dealers will inspect the fuel rail threads and replace the fuel rail as necessary free of charge, including parts and labor.

What is the safety risk?

The safety risk is fire. If the high-pressure fuel rail assembly leaks fuel and the fuel reaches an ignition source, the chance of a fire increases. Confirm your VIN, then arrange the free dealer inspection and repair if your motorhome is included.

What if I bought this Newmar motorhome used?

The free recall repair still applies. Federal recall law follows the vehicle, not the first owner. Check your VIN to confirm whether your specific motorhome is included, then contact a franchised Newmar dealer and reference recall 21V372 when you schedule service.

More information

NHTSA campaign pagenhtsa.gov/vehicle-recalls/21V372000
Newmar customer service1-800-731-8000
NHTSA recall #21V372
NHTSA recall # (full)21V372000

Source documents

This article is generated from NHTSA's primary recall filings and reviewed against the source on May 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →