2020 Custom Fire Freightliner M2 Recalls

Recalls on record Updated July 2026

The 2020 Custom Fire Freightliner M2 has 1 NHTSA recall campaign affecting an estimated 9 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 1 complaint with NHTSA, most often about the unknown or other. Last updated July 5, 2026.

Recall campaigns

FUEL SYSTEM, DIESEL 21V620000 2021-08-06 9 affected
Defect

Custom Fire Apparatus, Inc. (Custom Fire) is recalling certain 2017-2021 Peterbilt 348, Freightliner M2, Kenworth T370, and T880 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 9, 2021. Owners may contact Custom Fire's customer service at 1-715-294-2555.

Complaints by component

UNKNOWN OR OTHER
1
Total complaints1

What owners report

Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.

“The def header failed on this truck and it causes the vehicle to be disabled. The def header is an emissions part. Part number 04-31354-004 header-ssi,conc,6 bolt,cmns”

UNKNOWN OR OTHER · reported 2024-04-22
Sources & methodology

Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2020 Custom Fire Freightliner M2 as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.