Recall 11V570 affects 12 2010-2011 Sutphen SL75 and Pumpers/Rescue firefighting vehicles for DOC/DPF clamp failure. Repair is free at authorized Cummins dealers.
Sutphen is recalling 12 2010-2011 SL75 and Pumpers/Rescue firefighting vehicles because a V-band clamp T-bolt on the diesel exhaust aftertreatment system can fracture. If the clamp loosens, hot exhaust gases can vent before the tailpipe, which creates fire risk and a detached DOC/DPF housing can become a road hazard; the dealer repair will be free once Sutphen makes it available.
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What's wrong?
The V-band clamp assembly on affected 2010-2011 Sutphen SL75 and Pumpers/Rescue firefighting vehicles holds parts of the diesel exhaust treatment system together. It connects the inlet and outlet cone sections to the diesel oxidation catalyst and diesel particulate filter housing, the exhaust unit that helps clean diesel exhaust before it leaves the vehicle. A T-bolt tightens the clamp so those sections stay locked to the housing.
On these vehicles, the T-bolt in the clamp assembly can fracture when it is put under stress or load. Once that bolt breaks, the clamp loses tension. The inlet or outlet section attached to the DOC/DPF housing can then disconnect from the housing instead of staying secured in place.
There is no warning sign before failure. Owners and fleet managers should treat any loose exhaust hardware, unusual exhaust noise, or visible separation near the DOC/DPF housing as a reason to stop using the vehicle and arrange service.
Who's affected?
Includes the SL75 and Pumpers/Rescue fire trucks across the 2010 and 2011 model years, with the same engine and cooling system category involved.
| 2010 Sutphen SL75 | Engine and engine cooling |
|---|---|
| 2010 Sutphen Pumpers/Rescue | Engine and engine cooling |
| 2011 Sutphen Pumpers/Rescue | Engine and engine cooling |
| Units affected | 12 |
The year and model narrow the recall, but the VIN decides. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Hot exhaust gases can vent before the tailpipe if the inlet or outlet sections disconnect, creating a fire risk. If both clamps fail, the DOC/DPF housing can detach and become a road hazard. Schedule the recall repair soon. If an exhaust section disconnects, stop using the vehicle and call the dealer. Repair will be free at any franchised Sutphen dealer once available.
What should I do?
- Check your VIN to confirm your 2010-2011 Sutphen SL75 or Pumpers/Rescue vehicle is included in this recall.
- Contact Sutphen or Cummins to confirm the repair path before scheduling service.
- Schedule the free Cummins dealer repair for the V-band clamp assembly that keeps the DOC/DPF exhaust sections attached.
- Bring the recall notice if Sutphen or Cummins sent one. If not, reference recall number 11V570 when you call.
- Keep the vehicle away from fire-risk areas until the exhaust clamp repair is complete.
What happens at the repair
Sutphen is working with Cummins to identify and notify owners. Because the final remedy status is not listed in this record, confirm availability before arranging service. The filing says repairs are handled by authorized Cummins dealers and will be free once available. The repair addresses the V-band clamp assemblies that connect the inlet and outlet cone sections to the diesel oxidation catalyst and diesel particulate filter housing, including the T-bolt hardware that is tied to the failure.
Timeline
| October 10, 2011 | Owner notification mailed |
|---|---|
| December 1, 2011 | NHTSA published the recall |
Frequently asked questions
What is recall 11V570?
Recall 11V570 covers 12 2010-2011 Sutphen SL75 and Pumpers/Rescue firefighting vehicles with Cummins diesel engines. The V-band clamp T-bolt can fracture, loosening the DOC/DPF exhaust connection. Authorized Cummins dealers perform the repair for free.
What should I do if my 2010-2011 Sutphen SL75 or Pumpers/Rescue is on this recall?
Check your VIN to confirm your specific firefighting vehicle is included in recall 11V570. If it is, contact Sutphen or an authorized Cummins dealer and reference recall number 11V570. The repair is free through the authorized Cummins dealer network.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to correct the safety defect at no cost. For recall 11V570, the repair is performed by authorized Cummins dealers free of charge, covering the affected V-band clamp assembly.
What is the safety risk in recall 11V570?
The safety risk is fire and road-hazard exposure. If the inlet or outlet exhaust sections disconnect, hot exhaust gases can vent before reaching the tailpipe, creating a fire risk. If both clamps fail, the DOC/DPF housing can detach completely in some applications.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/11V570000 |
|---|---|
| Sutphen customer service | 1-812-377-5000 |
| NHTSA recall # | 11V570 |
| NHTSA recall # (full) | 11V570000 |
Source documents
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →