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Vehicle recall 21V630000 · August 9, 2021

Custom Fire Spartan Gladiator and Spartan Metrostar

The sealing washer may not seat correctly in the pilot boreholes, allowing the high pressure fuel rail assembly to leak.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary
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.
Consequence
A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy
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.
Notes
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.

Recall details

NHTSA campaign
21V630000
Reported to NHTSA
August 9, 2021
Filed by
Custom Fire Apparatus, Inc.
Manufacturer campaign
21009 (21V-323)
Owner notification
August 8, 2021
Vehicles potentially affected
48
Initiated by
the manufacturer
Components
Fuel system, diesel › Fuel injection system › Fuel rail
Recall 21V630000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Has your Custom Fire been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Custom Fire dealer can also check your VIN. Recall repairs are free.