Recall 11V519 covers 106 2011-2012 Thor Motor Coach Tuscany, Astoria, and Avanti recreational vehicles for DOC/DPF clamp failure. Repairs are free at authorized Cummins dealers.
Thor Motor Coach is recalling 106 2011-2012 Tuscany, Astoria, and Avanti recreational vehicles because a T-bolt in the V-band clamp assembly on Cummins diesel exhaust components can fracture. The failure can loosen exhaust connections, vent hot gases before the tailpipe, and create fire risk or a road hazard if the DOC/DPF housing detaches; the dealer repair will be free once available.
Does this recall apply to your specific vehicle?
The official, free per-VIN recall check is run by NHTSA. Enter your VIN and we'll forward you directly — and add you to a free watchlist so you hear about new recalls for your vehicle.
Check my VIN at NHTSARecallNotify doesn't check your VIN — NHTSA's official tool does. We use your email only to alert you to new recalls.
Watch this vehicle for recalls
Add it to your free watchlist and we will alert you as new federal recalls are posted for your year, make and model. New-recall alerts are rolling out now.
You are on the watchlist.
We will email you as new federal recalls are posted for your vehicle.
What's wrong?
On the 2011-2012 Thor Motor Coach Tuscany, Astoria, and Avanti motorhomes in NHTSA campaign 11V519, the affected part is a V-band clamp assembly in the diesel exhaust aftertreatment system. The clamp holds the inlet and outlet cone sections to the diesel oxidation catalyst and diesel particulate filter, which help treat exhaust before it leaves the vehicle. That clamp has to stay tight while the engine and exhaust system heat up, vibrate, and carry load.
The weak point is the T-bolt inside the clamp assembly. Under stress or load, that bolt can fracture. Once the bolt breaks, the clamp loses tension and loosens. The inlet or outlet section attached to the catalyst and filter housing can then disconnect from the housing.
There is no warning sign before failure. A driver should not expect a dashboard alert or a gradual change before the clamp lets go.
Who's affected?
Tuscany, Astoria, and Avanti appear across the 2011 and 2012 model years, all tied to engine and engine cooling.
| 2011 Thor Motor Coach Tuscany | Engine and engine cooling |
|---|---|
| 2012 Thor Motor Coach Tuscany | Engine and engine cooling |
| 2011 Thor Motor Coach Astoria | Engine and engine cooling |
| 2011 Thor Motor Coach Avanti | Engine and engine cooling |
| 2012 Thor Motor Coach Avanti | Engine and engine cooling |
| 2012 Thor Motor Coach Astoria | Engine and engine cooling |
| Units affected | 106 |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific motorhome.
What's the safety risk?
Disconnected exhaust sections can vent hot gases before they reach the tailpipe, raising the risk of combustion and fire. A full clamp failure also creates a road-hazard risk if the DOC/DPF housing separates. Schedule the repair soon and avoid operating the coach if exhaust parts look loose. Repair will be free at any franchised Thor Motor Coach dealer once available.
What should I do?
- Check your VIN to confirm your 2011-2012 Thor Motor Coach Tuscany, Astoria, or Avanti is included in this recall.
- Watch for the Thor Motor Coach recall notice if you have not received one, then use recall number 11V519 when you call.
- Contact an authorized Cummins dealer to ask about the free V-band clamp and T-bolt repair that keeps the DOC/DPF exhaust sections secured.
- Bring the recall notice and ask the dealer to confirm that parts and labor are covered.
- Avoid operating the RV if you smell hot exhaust, see exhaust components hanging loose, or suspect the DOC/DPF housing has shifted.
What happens at the repair
The source repair path sends affected motorhomes to an authorized Cummins dealer. The dealer repairs the Cummins engine exhaust aftertreatment connection covered by the recall, where the V-band clamp assembly can loosen if the T-bolt fractures. The repair is performed free of charge. Thor Motor Coach worked with Cummins to identify and notify owners for campaign 11V519. Reimbursement is not addressed in the source material, so ask the service desk only about the free recall repair and any open work tied to this campaign.
Timeline
| October 10, 2011 | Owner notification mailed |
|---|---|
| October 19, 2011 | NHTSA published the recall |
Frequently asked questions
What is recall 11V519?
Recall 11V519 covers 106 2011-2012 Thor Motor Coach Tuscany, Astoria, and Avanti recreational vehicles with Cummins ISX or ISL diesel engines. A V-band clamp T-bolt can fracture, loosen the exhaust connection, vent hot exhaust gases, and raise fire or road-hazard risk.
What should I do if my 2011-2012 Thor Motor Coach Tuscany, Astoria, or Avanti is on this recall?
Check your VIN to confirm your specific recreational vehicle is included in recall 11V519. If it is, contact Thor Motor Coach or Cummins customer service at 1-812-377-5000 and ask for the free V-band clamp recall repair through an authorized Cummins dealer.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to fix the safety defect at no cost, and Thor Motor Coach states that authorized Cummins dealers perform this repair free of charge. Ask the service desk to reference recall 11V519 when scheduling the work.
What is the safety risk in recall 11V519?
The safety risk is fire or a road hazard. If the V-band clamp loosens, hot exhaust gases can vent before they exit the tailpipe, raising the risk of combustion and fire. If both clamps fail, the DOC or DPF housing can detach completely.
What if I bought this Thor Motor Coach recreational vehicle used?
The free recall repair still applies. Recall coverage follows the VIN, not the first owner. Check your VIN to confirm whether your Tuscany, Astoria, or Avanti is included, then call Thor Motor Coach or Cummins customer service with recall number 11V519.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/11V519000 |
|---|---|
| Thor Motor Coach customer service | 1-812-377-5000 |
| NHTSA recall # | 11V519 |
| NHTSA recall # (full) | 11V519000 |
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 →