2017–2021 Custom Fire Spartan Gladiator, 2017–2021 Custom Fire Spartan Metrostar Recall: Sealing washer may not seat correctly in the pilot boreholes, allowing the…
NHTSA campaign 21V630000 · Fuel System, Diesel · filed Aug 9, 2021 · verified Jul 30, 2026
The defect
Custom Fire Apparatus, Inc. (Custom Fire) is recalling certain 2017-2021 Spartan Gladiator, MetroStar, and MetroStarX emergency vehicles equipped with Cummins L9 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 will inspect the rail threads and fuel lines, and replace the rail as necessary, free of charge. Owner notification letters were mailed on August 8, 2021. Owners may contact Custom Fire's customer service at 1-715-294-2555.
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
| Make | Model | Model years |
|---|---|---|
| Custom Fire | Spartan Gladiator | 2017, 2018, 2019, 2020, 2021 |
| Custom Fire | Spartan Metrostar | 2017, 2018, 2019, 2020, 2021 |
Related recalls
More Custom Fire Spartan Gladiator recalls
- 2021–2022 Custom Fire Spartan Gladiator and 2 other models — Rear axle drive pinion may fracture
- 2009–2021 Custom Fire Spartan Gladiator and 1 other model — Fire water pump solenoid may corrode internally, causing a…
- 2019–2021 Custom Fire Spartan Gladiator and 1 other model — Pressure may build in the power steering pump and break the…
Other campaigns involving Custom Fire vehicles
- 2023 Custom Fire Spartan Metrostar RT — After the fire truck is reversed, the transmission control…
- 2018 Custom Fire Peterbilt 348 — Dana D-series axle steering arm fasteners that attach the…
- 2017–2021 Custom Fire Freightliner M2 and 3 other models — Sealing washer may not seat correctly in the pilot…
All Custom Fire Spartan Gladiator recalls → · All Custom Fire recalls →
Source: NHTSA recall database, campaign 21V630000 (manufacturer number 21009 (21V-323)). Data last verified Jul 30, 2026.