Tiffin Allegro Bus, Tiffin Phaeton, model year 2011. Filed by Tiffin Motorhomes, Inc. and reported to NHTSA on 23 September 2011. 179 vehicles potentially affected.
What the notice says Tiffin motorhomes is recalling certain model year 2011 allegro bus and phaeton recreational vehicles built on the powerglide chassis equipped with a cummins isx or isl diesel engine. the v-band clamp assembly, part numbers q187684, q187685, and q187686, used to connect the inlet and outlet cone sections to the diesel …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
What owners ask about this recall
- Which vehicles does recall 11V485 cover?
- Tiffin Allegro Bus, Tiffin Phaeton, model year 2011.
- What is wrong with them?
- TIFFIN MOTORHOMES IS RECALLING CERTAIN MODEL YEAR 2011 ALLEGRO BUS AND PHAETON RECREATIONAL VEHICLES BUILT ON THE POWERGLIDE CHASSIS EQUIPPED WITH A CUMMINS ISX OR ISL DIESEL ENGINE.
- What can happen if it is not put right?
- IF THE INLET OR OUTLET SECTIONS DISCONNECT, HOT EXHAUST GASES CAN VENT PRIOR TO EXITING THE TAILPIPE, CREATING THE RISK OF COMBUSTION AND A FIRE. IF BOTH CLAMPS FAIL, THERE IS A RISK IN SOME APPLICATIONS THAT THE DOC/DPF HOUSING MAY DETACH COMPLETELY, CREATING A ROAD HAZARD.
- Is there a fix yet?
- Yes, and it is free. TIFFIN MOTORHOMES IS WORKING WITH CUMMINS TO IDENTIFY AND NOTIFY OWNERS OF THE RECALL CAMPAIGN. REPAIRS WILL BE PERFORMED BY AUTHORIZED CUMMINS DEALERS FREE OF CHARGE. THE SAFETY RECALL BEGAN ON OCTOBER 10, 2011. OWNERS MAY CONTACT CUMMINS AT 1-812-377-5000 OR TIFFIN MOTORHOMES AT 1-256-356-8661.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “IF THE INLET OR OUTLET SECTIONS DISCONNECT, HOT EXHAUST GASES CAN VENT PRIOR TO EXITING THE TAILPIPE, CREATING THE RISK OF COMBUSTION AND A FIRE. IF BOTH CLAMPS FAIL, THERE IS A RISK IN SOME APPLICATIONS THAT THE DOC/DPF HOUSING MAY DETACH…”
affected
in the notice
caught
| Campaign | 11V485 |
|---|---|
| Filed by | TIFFIN MOTORHOMES, INC. |
| System at fault | Engine And Engine Cooling |
| Reported to NHTSA | 23 September 2011 |
| Model years | 2011-2011 |
| Vehicles named | TIFFIN ALLEGRO BUS, TIFFIN PHAETON |
What the notice says today
The consequence
IF THE INLET OR OUTLET SECTIONS DISCONNECT, HOT EXHAUST GASES CAN VENT PRIOR TO EXITING THE TAILPIPE, CREATING THE RISK OF COMBUSTION AND A FIRE. IF BOTH CLAMPS FAIL, THERE IS A RISK IN SOME APPLICATIONS THAT THE DOC/DPF HOUSING MAY DETACH COMPLETELY, CREATING A ROAD HAZARD.
The remedy
TIFFIN MOTORHOMES IS WORKING WITH CUMMINS TO IDENTIFY AND NOTIFY OWNERS OF THE RECALL CAMPAIGN. REPAIRS WILL BE PERFORMED BY AUTHORIZED CUMMINS DEALERS FREE OF CHARGE. THE SAFETY RECALL BEGAN ON OCTOBER 10, 2011. OWNERS MAY CONTACT CUMMINS AT 1-812-377-5000 OR TIFFIN MOTORHOMES AT 1-256-356-8661.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 588 notices in the record whose component field names engine and engine cooling. Across that group the median wait before owners were written to was 47 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 11V485, wording as read on 17 September 2026. https://carsmultiverse.com/recall/11v485/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Tiffin notices we hold
- 12V526: model year 2010-2013 Allegro Bus motorcoaches, manufactured from March 2010, through September 2012 and equipped with a Cummins EPA 2010 ISL engine
- 11V452: MODEL YEAR 2007-2011 PHAETON, MY 2008-2010 BUS, AND MY 2010 ALLEGRO MOTORHOMES EQUIPPED WITH KONGSBERG AUTOMOTIVE ADJUSTABLE BRAKE PEDALS
- 11V327: MODEL YEAR 2006-2010, ALLEGRO AND ALLEGRO BAY RECREATIONAL
- 11V082: RECREATIONAL
- 10V512: MODEL YEAR 2011 ALLEGRO, ALLEGRO BUS, AND PHAETON RVS EQUIPPED WITH ATWOOD 35 SERIES RANGE OVENS
All 6 Tiffin campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 11V485 on 17 September 2026, they were:
- Defect summary
a4547177 - Consequence
1491100f - Remedy
5aa894da
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 11V485 · how the whole register is watched
This notice names one vehicle among several registers that have written about it. Every notice this site holds for the Tiffin Allegro Bus, in all seven, is kept on that vehicle's own page, with the newest in each.
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