Use cautionVehicle recall · NHTSA · Published June 8, 2021
Custom Fire Freightliner M2 2020 Fuel Leak Recall: Fire Risk
Custom Fire recalls 2020 Freightliner M2 trucks with Cummins diesel engines due to potential fuel leaks near ignition sources, risking fire. Owners must have rail inspected and repaired free.
“Custom Fire Freightliner M2 2020 Fuel Leak Recall: Fire Risk.” GovInfoNow, updated August 18, 2026. https://govinfonow.com/recall/79356-custom-fire-freightliner-m2-2020-fuel-leak-recall-fire-risk. Based on NHTSA recall #21V620000 (https://www.nhtsa.gov/recalls?nhtsaId=21V620000).
Custom Fire Apparatus, Inc. recalled 2017-2021 Peterbilt 348, Freightliner M2, Kenworth T370, and T880 emergency vehicles with Cummins L9 diesel engines due to a fuel leak fire risk, according to the National Highway Traffic Safety Administration (NHTSA) on June 8, 2021. Owners should contact Custom Fire at 1-715-294-2555 for inspection and replacement services.
How to tell if you have it
Custom Fire Peterbilt 348, 2017-2021
Custom Fire Freightliner M2, 2017-2021
Custom Fire Kenworth T370, 2017-2021
Custom Fire Kenworth T880, 2017-2021
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 9, 2021. Owners may contact Custom Fire's customer service at 1-715-294-2555.
The hazard
A fuel leak in the presence of an ignition source increases the risk of a fire. The sealing washer may not seat correctly in the pilot boreholes, allowing the high-pressure fuel rail assembly to leak.
Context
GovInfoNow's records show other recent recalls of similar products include Freightliner FCCC XBS Recall: Fuel Leak Fire Risk (2026-10-07), Ford 2024 Bronco Fuel Leak Recall: Fire Risk (2025-11-09), and Tiffin Phaeton Recall: Fuel Leak Fire Risk (2026-10-08). NHTSA has 1 owner complaint on file for the 2020 CUSTOM FIRE FREIGHTLINER M2, with the latest received on 2024-05-03. Manufacturers have sent NHTSA 2 technical service bulletins or other communications covering the 2020 CUSTOM FIRE FREIGHTLINER M2, with the latest dated 2022-05-26.
How to tell if you have this one
Check for a 2020 Freightliner M2 truck with Cummins L9 diesel engine. The recall covers vehicles sold from 2017 to 2021.
Brand
Custom Fire
Category
Vehicle
Based on the official NHTSA remedy
What to do — step by step
Contact Customer Service
Call Custom Fire at 1-715-294-2555 to schedule a free inspection of the fuel rail.
Get Fuel Rail Inspected
Custom Fire will inspect the rail threads and fuel lines for leaks and replace parts if needed at no cost.
Official remedy
What NHTSA says 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 9, 2021. Owners may contact Custom Fire's customer service at 1-715-294-2555.
How this recall unfolded
Recall timeline
Owners were mailed letters 2 months after NHTSA received the defect report.
1NHTSA received the defect report
2Owner letters mailed
Dates from the agency record only; steps without a date are left out.
Take action
Contact Custom Fire
We’ve drafted a message you can send Custom Fire to request your refund or repair — edit it as you like.
Subject: Recall 21V620000 — Custom Fire Freightliner M2 2020 Fuel Leak Recall: Fire Risk
Hello,
I own a Custom Fire Freightliner M2 2020 Fuel Leak Recall: Fire Risk that is covered by recall 21V620000 from Custom Fire.
The official recall notice states: 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.
I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this?
Thank you.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Plain-language summary written by qwen3:4b on August 18, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.