Recall 23V631 covers 660 2021-2024 Spartan Fire emergency vehicles with delayed park brake engagement. Repair is free at any franchised Spartan Fire dealer.
Spartan Fire is recalling 660 2021-2024 Gladiator, Metrostar, FC-94, Redundant Panther, and Redundant Predator emergency vehicles because an inversion valve defect can delay park brake engagement. The vehicle can move unintentionally and increase crash or injury risk, and Spartan Fire dealers will complete the repair free of charge.
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What's wrong?
The inversion valve on these 2021-2024 Spartan Fire Metrostar, Redundant Predator, Gladiator, FC-94, and Redundant Panther emergency vehicles is part of the air parking brake system. It manages air pressure in the brake circuit so the parking brake sets when the driver applies the park brake control. On an emergency vehicle, that parking brake needs to engage predictably when the truck is stopped.
In affected vehicles, the inversion valve is out of specification. Spartan Fire was still investigating the exact root cause, but the defect can delay park brake engagement after the control is applied. During that delay, the vehicle can move unintentionally instead of staying held in place by the parking brake.
The warning sign is the missing audible set when the parking brake is applied. If the expected sound is not heard, the parking brake has not confirmed normal engagement.
Who's affected?
Covers 5 fire apparatus model lines from the 2021-2024 model years, all tied to the same parking brake component.
| 2022 Spartan Fire Metrostar | Parking brake |
|---|---|
| 2024 Spartan Fire Metrostar | Parking brake |
| 2023 Kme Redundant Predator | Parking brake |
| 2024 Spartan Fire Gladiator | Parking brake |
| 2022 Spartan Fire Gladiator | Parking brake |
| 2021 Spartan Fire Gladiator | Parking brake |
| 2024 Spartan Fire FC-94 | Parking brake |
| 2023 Spartan Fire Metrostar | Parking brake |
| 2022 Kme Redundant Panther | Parking brake |
| 2023 Kme Redundant Panther | Parking brake |
| 2023 Spartan Fire FC-94 | Parking brake |
| 2021 Spartan Fire Metrostar | Parking brake |
| 2023 Spartan Fire Gladiator | Parking brake |
| 2022 Spartan Fire FC-94 | Parking brake |
| Units affected | 660 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not confirm inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
The safety risk is unintentional vehicle movement, which increases crash or injury risk. If the audible set signal is missing, treat the vehicle as unsecured and contact service before moving it. Schedule the inversion valve replacement soon. Repair is free at any franchised Spartan Fire dealer.
What should I do?
- Check your VIN to confirm your 2021-2024 Spartan Fire Metrostar, Redundant Predator, Gladiator, FC-94, or Redundant Panther is included in this recall.
- Contact a franchised Spartan Fire dealer to schedule the free inversion-valve replacement that fixes delayed park brake engagement.
- Bring the recall notice if Spartan Fire mailed one. If not, reference recall number 23V631 when you call.
- Use extra care when parking until the repair is complete because delayed park brake engagement can allow unintentional vehicle movement.
What happens at the repair
At the dealer, a Spartan Fire technician replaces the inversion valve that can delay park brake engagement. The replacement parts and labor are free under recall 23V631. Spartan Fire has a general reimbursement plan on file for owners who already paid for a related inversion valve or park brake repair before the recall notice. Keep the repair invoice and proof of payment, then contact Spartan Fire customer service or ask the service desk how to submit the claim.
| Reimbursement | Reimbursement available |
|---|
Timeline
| September 12, 2023 | NHTSA published the recall |
|---|---|
| October 23, 2023 | Dealer notification began |
| October 27, 2023 | Dealer notification ended |
| October 30, 2023 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| October 30, 2023 | Interim owner notification (was planned for this date) |
| November 2, 2023 | Owner notification mailed |
Frequently asked questions
What is recall 23V631?
Recall 23V631 covers 660 2021-2024 Spartan Fire Metrostar, Redundant Predator, Gladiator, FC-94, and Redundant Panther emergency vehicles with an inversion valve defect. The park brake engagement can be delayed, which can let the vehicle move unintentionally. Spartan Fire dealers will replace the inversion valve for free.
What should I do if my 2021-2024 Spartan Fire Metrostar, Redundant Predator, Gladiator, FC-94, or Redundant Panther is on this recall?
Check your VIN to confirm your specific emergency vehicle is included in recall 23V631. If it is, contact a Spartan Fire dealer to schedule the inversion valve replacement. Reference recall 23V631 or Spartan Fire recall number 23017 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair this defect at no cost. Spartan Fire dealers will replace the inversion valve free of charge, including parts and labor, for vehicles included in recall 23V631.
What is the safety risk?
The safety risk is unintended vehicle movement. A delayed park brake engagement can let the emergency vehicle move after the park brake is applied. That raises the risk of a crash or injury. The dealer repair replaces the inversion valve that causes the delay.
When were owners notified about recall 23V631?
Spartan Fire mailed owner notification letters on November 2, 2023. If you own or operate one of these emergency vehicles and never received a letter, check your VIN and call Spartan Fire customer service at 1-800-867-6478 with recall number 23017.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V631000 |
|---|---|
| Spartan Fire customer service | 1-800-867-6478 |
| NHTSA recall # | 23V631 |
| NHTSA recall # (full) | 23V631000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notice (PDF)
- Download Misc. Document (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →