Recall 21V576 affects 30 2021 New Flyer XD35 and XD40 buses for fuel-hose leaks. Repair is free at any franchised New Flyer dealer.
New Flyer is recalling 30 2021 XD35 and XD40 buses equipped with Cummins L9 diesel engines because the pressurized fuel hose between the fuel pump and remote Stage 2 fuel filter head can leak. A fuel leak near an ignition source increases the risk of a fire, and the New Flyer dealer repair will be free once available.
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What's wrong?
The fuel system on 2021 New Flyer XD35 and XD40 vehicles with Cummins L9 diesel engines uses pressurized hoses to move fuel from the fuel pump to the remote Stage 2 fuel filter head. That filter setup removes contamination before fuel continues through the engine system. The hose between the pump and filter head has to stay sealed while fuel is under pressure.
In this recall, that hose is the weak point. Fuel can leak from the line between the fuel pump and the remote fuel filter head. A leak in a pressurized diesel fuel line means fuel leaves the system where it should stay contained, which creates a repair issue that a New Flyer dealer needs to handle.
There is no warning sign before failure. Do not rely on smell, dashboard messages, or visible fluid as advance notice that the hose is about to leak.
Who's affected?
Covers the XD35 and XD40 bus models with the same fuel system component.
| 2021 New Flyer XD35 | fuel system |
|---|---|
| 2021 New Flyer XD40 | fuel system |
| Units affected | 30 |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific bus.
What's the safety risk?
A fuel leak near an ignition source increases the risk of a fire. Keep the bus in service only under guidance from New Flyer or the servicing dealer, and schedule the recall repair soon. Repair will be free at any franchised New Flyer dealer once available.
What should I do?
- Check your VIN to confirm your 2021 New Flyer XD35 or XD40 is included in this recall.
- Call New Flyer customer service at 1-204-224-6706 to confirm the current repair instructions for recall number 21V576.
- Contact a franchised New Flyer service center once New Flyer confirms service is ready for your vehicle.
- Schedule the fuel-hose replacement that fixes the leak point between the fuel pump and the remote fuel filter head.
- Bring the owner notice if you have it, and reference recall number 21V576 when you call.
What happens at the repair
New Flyer has identified the repair path, but this record does not mark the final remedy as available. Once the repair opens, a New Flyer technician will replace the fuel hoses connected to the Cummins L9 Diesel engine's remote Stage 2 fuel filter setup. The recall repair will be free, including covered parts and labor. The fuel hose between the fuel pump and remote fuel filter head is the focus, so ask the service desk to confirm the recall hose replacement is tied to campaign 21V576.
Timeline
| July 28, 2021 | NHTSA published the recall |
|---|---|
| August 3, 2021 | Owner notification mailed |
Frequently asked questions
What is recall 21V576?
Recall 21V576 covers 30 2021 New Flyer XD35 and XD40 buses with Cummins L9 Diesel engines, remote Stage 2 fuel filters, and pressurized hoses. The fuel hose between the fuel pump and remote fuel filter head can leak. Cummins will replace the fuel hoses for free.
What should I do if my 2021 New Flyer XD35 or XD40 is on this recall?
Check your VIN to confirm whether your specific bus is included in recall 21V576. If it is, contact a franchised New Flyer dealer or New Flyer customer service at 1-204-224-6706 to arrange the free fuel-hose replacement.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and this recall states that Cummins will replace the fuel hoses free of charge. Use recall 21V576 when you contact the dealer or New Flyer customer service.
What is the safety risk?
A fuel leak near an ignition source increases the risk of a fire, according to NHTSA campaign 21V576. Until the fuel hoses are replaced, ask the service desk whether the bus needs operating limits or inspection before its next route.
When were owners notified?
Owner notification letters were mailed on August 3, 2021. If you manage a 2021 New Flyer XD35 or XD40 and never received a notice, check the VIN and contact New Flyer customer service at 1-204-224-6706 with recall 21V576.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V576000 |
|---|---|
| New Flyer customer service | 1-204-224-6706 |
| NHTSA recall # | 21V576 |
| NHTSA recall # (full) | 21V576000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →