Pierce recall 21V394 covers 2,416 2017-2021 Arrow Xt, Enforcer, Velocity, Impel, Quantum, and Saber vehicles for fuel rail leaks. Free dealer repair.
Pierce is recalling 2,416 2017-2021 Arrow Xt, Enforcer, Velocity, Impel, Quantum, and Saber vehicles because a sealing washer can fail to seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak. A fuel leak near an ignition source increases the risk of fire, and Pierce dealers will complete the recall repair free of charge.
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What's wrong?
The high pressure fuel rail on these 2017-2021 Pierce Arrow Xt, Enforcer, Velocity, Impel, Quantum, and Saber vehicles is part of the Cummins L9 or ISX12 diesel fuel injection system. It holds pressurized diesel fuel and feeds that fuel to the injectors so the engine receives the right amount at the right time. A sealing washer at the end of the rail helps close the joint and keep fuel inside the assembly.
On affected vehicles, the rail end sealing bores have pilot bores that are too small for the sealing washer. When the washer cannot sit correctly in the bore, the joint does not get the load it needs to stay sealed while the engine is in service. Diesel fuel can then leak from the high pressure fuel rail assembly.
Operators can see or smell diesel fuel before failure. The check engine lamp can also illuminate. Treat either sign as related to the fuel rail leak and keep people away from leaking fuel until the vehicle is inspected.
Who's affected?
The scope spans Arrow Xt, Enforcer, Velocity, Impel, Quantum, and Saber fire trucks from 2017-2021, all tied to the same fuel-system component.
| 2021 Pierce Arrow Xt | fuel system |
|---|---|
| 2020 Pierce Enforcer | fuel system |
| 2017 Pierce Enforcer | fuel system |
| 2019 Pierce Enforcer | fuel system |
| 2018 Pierce Velocity | fuel system |
| 2019 Pierce Velocity | fuel system |
| 2020 Pierce Arrow Xt | fuel system |
| 2019 Pierce Impel | fuel system |
| 2018 Pierce Impel | fuel system |
| 2017 Pierce Impel | fuel system |
| 2020 Pierce Quantum | fuel system |
| 2018 Pierce Quantum | fuel system |
| 2018 Pierce Saber | fuel system |
| 2017 Pierce Saber | fuel system |
| 2020 Pierce Saber | fuel system |
| 2021 Pierce Velocity | fuel system |
| 2017 Pierce Velocity | fuel system |
| 2020 Pierce Velocity | fuel system |
| 2017 Pierce Quantum | fuel system |
| 2021 Pierce Enforcer | fuel system |
| 2021 Pierce Impel | fuel system |
| 2021 Pierce Quantum | fuel system |
| 2021 Pierce Saber | fuel system |
| 2019 Pierce Saber | fuel system |
| 2019 Pierce Quantum | fuel system |
| 2020 Pierce Impel | fuel system |
| 2018 Pierce Enforcer | fuel system |
| 2019 Pierce Arrow Xt | fuel system |
| 2017 Pierce Arrow Xt | fuel system |
| 2018 Pierce Arrow Xt | fuel system |
| Units affected | 2,416 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
A fuel leak near an ignition source increases the risk of fire. If you see or smell diesel fuel, or the check engine lamp comes on, stop using the truck and call the dealer before the next trip. Repair is free at any franchised Pierce dealer.
What should I do?
- Check your VIN to confirm your 2017-2021 Pierce Arrow Xt, Enforcer, Velocity, Impel, Quantum, or Saber vehicle is included in this recall.
- Contact a franchised Pierce dealer to schedule the free fuel-rail inspection and repair that addresses the high-pressure fuel rail leak.
- Bring the recall notice if Pierce mailed one. If not, reference recall number 21V394 when you call.
- Stop using the vehicle and call the dealer if you smell diesel fuel or see a fuel leak.
What happens at the repair
At the dealer, a Pierce technician inspects the fuel rail threads and fuel lines, then replaces the high pressure fuel rail if the inspection shows it is needed. The recall repair is free, including parts and labor. Pierce also has a recall specific reimbursement plan for units not covered by the manufacturer's limited warranty. If you have already paid for a related fuel rail or fuel line repair, contact Pierce customer service and ask what documentation the reimbursement plan requires.
| Reimbursement | Reimbursement available |
|---|
Timeline
| May 26, 2021 | NHTSA published the recall |
|---|---|
| June 23, 2021 | Dealer notification began |
| June 23, 2021 | Interim owner notification (was planned for this date) |
| June 30, 2021 | Dealer notification ended |
| January 24, 2022 | Owner notification mailed |
Frequently asked questions
What is recall 21V394?
Recall 21V394 covers 2,416 2017-2021 Pierce Arrow Xt, Enforcer, Velocity, Impel, Quantum, and Saber vehicles with a high pressure fuel rail assembly that can leak fuel. A fuel leak near an ignition source increases fire risk. Pierce dealers will inspect the rail threads and fuel lines, and replace the rail as needed for free.
What should I do if my 2017-2021 Pierce Arrow Xt, Enforcer, Velocity, Impel, Quantum, or Saber is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 21V394. If it is, contact a franchised Pierce dealer to schedule the fuel rail and fuel line inspection. Reference recall 21V394 when you call. The inspection and required rail replacement are free.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost, and Pierce will inspect the rail threads and fuel lines free of charge. If the dealer finds the fuel rail needs replacement, that work is also covered at no cost.
What is the safety risk?
The safety risk is fire. The sealing washer in the high pressure fuel rail assembly can fail to seat correctly, which allows fuel to leak. If leaking fuel reaches an ignition source, fire risk increases. The dealer repair path is to inspect the fuel rail area and replace the rail as needed.
When were owners notified about recall 21V394?
Pierce mailed interim owner letters on June 24, 2021, and owner notification letters on July 30, 2021. If you never received a letter, the VIN still decides whether the recall applies. Check your VIN, then contact a franchised Pierce dealer if your vehicle is included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V394000 |
|---|---|
| Pierce customer service | 1-888-974-3723 |
| NHTSA recall # | 21V394 |
| NHTSA recall # (full) | 21V394000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Report (PDF)
- Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →