2011 Tiffin Allegro, 2011 Tiffin Phaeton Recall: TIFFIN MOTORHOMES, INC
NHTSA campaign 11V547000 · Engine and Engine Cooling · filed Nov 10, 2011 · verified Jul 30, 2026
The defect
TIFFIN MOTORHOMES, INC. (TIFFIN) IS RECALLING CERTAIN MODEL YEAR 2011 ALLEGRO AND PHAETON RECREATIONAL VEHICLES BUILT ON FREIGHTLINER CHASSIS AND EQUIPPED WITH A CUMMINS ISC, ISX, ISM, 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 OXIDATION CATALYST (DOC)/DIESEL PARTICULATE FILTER (DPF) INCLUDE A T-BOLT WHICH CAN FRACTURE AND FAIL WHEN SUBJECTED TO STRESS OR LOAD. A FRACTURE OR FAILURE OF THE T-BOLT MAY CAUSE THE CLAMP TO LOOSEN AND THE INLET OR OUTLET SECTIONS ATTACHED TO THE DOC/DPF HOUSING TO DISCONNECT.
The risk
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.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
TIFFIN 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 AT 1-256-356-8661.
OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO <A HREF=HTTP://WWW.SAFERCAR.GOV>HTTP://WWW.SAFERCAR.GOV</A> .
Affected vehicles
Related recalls
More Tiffin Allegro recalls
- 2023 Tiffin Allegro and 5 other models — Fitting on the non-leaching hose connected to the LPG…
- 2021–2023 Tiffin Allegro and 4 other models — Output line on the LPG tanks may not connect properly to…
- 2021–2022 Tiffin Allegro and 1 other model — Slide-room may extend out 6 to 8 inches while parked or…
- 2018–2022 Tiffin Allegro and 1 other model — Buss bar may be improperly secured, which can cause…
- 2018–2022 Tiffin Allegro and 5 other models — Sofa seat belts may not have been installed correctly…
Other campaigns involving Tiffin vehicles
Source: NHTSA recall database, campaign 11V547000. Data last verified Jul 30, 2026.