The defect
Tiffin Motorhomes, Inc. (Tiffin) is recalling certain 2022-2025 Allegro Bus, and Phaeton motorhomes, equipped with certain L9 diesel engines, part number D563027BX03. The remote fuel filter hoses may separate from the fitting, causing a fuel leak and an engine stall.
The risk
A fuel leak in the presence of an ignition source increases the risk of a fire. An engine stall increases the risk of a crash.
The remedy
Cummins dealers will replace the fuel hoses, free of charge. Owner notification letters are expected to be mailed November 20, 2026. Owners may contact Tiffin customer service at 1-256-356-8661. Tiffin's number for this recall is TIF-150
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Tiffin Allegro Bus | 2022, 2023, 2024, 2025 |
| Tiffin Phaeton | 2022, 2023, 2024, 2025 |
Components: FUEL SYSTEM, DIESEL:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Tiffin Allegro Bus | 2022 | 0 | 7 |
| Tiffin Allegro Bus | 2023 | 2 | 5 |
| Tiffin Allegro Bus | 2024 | 0 | 3 |
| Tiffin Allegro Bus | 2025 | 0 | 2 |
| Tiffin Phaeton | 2022 | 6 | 10 |
| Tiffin Phaeton | 2023 | 0 | 6 |
| Tiffin Phaeton | 2024 | 0 | 2 |
| Tiffin Phaeton | 2025 | 1 | 2 |
Other fuel system, diesel recalls in 2026
12 of the 666 recall campaigns reported to NHTSA in 2026 concerned the fuel system, diesel; Tiffin Motorhomes, Inc. filed 71 campaigns in all.
| 26V679000 15 Oct 2026 | Shyft Group |
| 26V669000 12 Oct 2026 | Temsa |
| 26V661000 8 Oct 2026 | Sutphen Corporation |
| 26V660000 7 Oct 2026 | Daimler Trucks North America, LLC |
| 26V603000 21 Sept 2026 | Forest River, Inc. |
| 26V522000 10 Aug 2026 | Daimler Trucks North America, LLC |
| 26V523000 10 Aug 2026 | Daimler Trucks North America, LLC |
| 26V497000 30 Jul 2026 | Wanco, Inc. |
NHTSA recalls (public domain) · all recalls of 2026