NHTSA Recall 21V971000: Fuel rail (fuel system)
Motor Coach Industries reported this safety recall to NHTSA on , covering an estimated 1,125 vehicles. It affects 8 models including the Mci D4000.
| NHTSA campaign | 21V971000 |
|---|---|
| Manufacturer campaign | R21-028 |
| Component | FUEL SYSTEM, DIESEL › FUEL INJECTION SYSTEM › FUEL RAIL |
| Report received | December 15, 2021 |
| Owner notification | March 11, 2022 |
| Initiated by | Manufacturer |
Defect
Motor Coach Industries (MCI) is recalling certain 2019-2022 D4000 ISTV, D4500, 2021 D4000, D4520, 2020-2021 D4505, D4005, 2020-2022 D45CRTLE, and 2019-2021 J4500 vehicles equipped with certain Cummins X12 diesel engines. The fuel tubes between the fuel rail and the injectors for cylinders four, five, and six may fatigue and crack, which can result in a high pressure fuel leak.
Safety risk
A high pressure fuel leak in the presence of an ignition source can increase the risk of a fire.
Remedy
On engines with 75 miles or less, Cummins dealers will install vibration isolators to the fuel tubes. Engines with more than 75 miles will receive new fuel tubes with vibration isolators. Repairs will be performed free of charge. Owner notification letters were mailed March 11, 2022. Owners may contact MCI customer service at 1-800-241-2947. MCI's number for this recall is R21-028.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Vehicles covered by recall 21V971000
| Make and model | Model years |
|---|---|
| Mci D4000 | 2021 |
| Mci D4000 Istv | 2019, 2020, 2021, 2022 |
| Mci D4005 | 2020, 2021 |
| Mci D4500 | 2019, 2020, 2021, 2022 |
| Mci D4505 | 2020, 2021 |
| Mci D4520 | 2021 |
| Mci D45CRTLE | 2020, 2021, 2022 |
| Mci J4500 | 2019, 2020, 2021 |
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.