Daimler Trucks North America recalls 2018-2021 Thomas Built Buses Saf-T-Liner HDX school buses with potential fuel leaks that could cause fire if ignition sources are present.
A fuel leak in the presence of an ignition source increases the risk of a fire.
Daimler Trucks North America is recalling certain 2018-2021 Thomas Built Buses Saf-T-Liner HDX school buses due to a risk of fuel leaks near ignition sources that could cause fire. Owners should contact dealers for free repairs before the issue worsens. Read more at govinfonow.com/recall/1224402-thomas-built-buses-2019-saf-t-liner-hdx-school-buses.
Source Summary by GovInfoNow · govinfonow.com/recall/1224402-thomas-built-buses-2019-saf-t-liner-hdx-school-buses · Updated October 4, 2026 · Official notice: NHTSA #21V327000
“Thomas Built Buses 2019 Saf-T-Liner HDX School Buses: Fuel Leak Fire Risk.” GovInfoNow, updated October 4, 2026. https://govinfonow.com/recall/1224402-thomas-built-buses-2019-saf-t-liner-hdx-school-buses. Based on NHTSA recall 21V327000 (https://www.nhtsa.gov/recalls?nhtsaId=21V327000).
The sealing washer may not seat properly in the fuel rail assembly, causing fuel to leak. If this leak is near an ignition source like a spark or hot engine part, it could ignite and cause a fire.
School bus owners with 2018-2021 Thomas Built Buses Saf-T-Liner HDX models are most at risk. Drivers and passengers could face fire hazards if fuel leaks occur near ignition sources.
Check if your school bus has a Thomas Built Buses Saf-T-Liner HDX model from 2018 to 2021. The recall was notified to owners via mail starting June 21, 2021.
Dealers will replace the fuel rail and fuel lines at no cost to you.
You may have received an interim owner notification letter from DTNA mailed on June 21, 2021.
Dealers will replace the fuel rail and fuel lines, free of charge. Interim owner notification letters were mailed on June 21, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-886.
The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.
Check if your Thomas Built Buses Saf-T-Liner HDX school bus was manufactured between 2018 and 2021.
Contact a dealer for free replacement of the fuel rail and fuel lines.
We’ve drafted a message you can send Thomas Built Buses to request your refund or repair — edit it as you like.
Subject: Recall 21V327000 — Thomas Built Buses Thomas Built Buses Hello, I own a Thomas Built Buses that is covered by recall 21V327000 from Thomas Built Buses. The official recall notice states: Dealers will replace the fuel rail and fuel lines, free of charge. Interim owner notification letters were mailed on June 21, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-886. 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.
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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.
