Cummins X12, model year 9999. Filed by Cummins, Inc. and reported to NHTSA on 1 December 2021. 10,938 vehicles potentially affected.
What the notice says Cummins, Inc. (Cummins) is recalling certain X12 Diesel Engines, with part numbers D0S3005BX03 and D0S3009BX03. 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.
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.
Cummins's own number for this recall: C2532. That is the number on the owner letter and on the dealer paperwork. 21E099 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 21E099 cover?
- Cummins X12.
- What is wrong with them?
- Cummins, Inc. (Cummins) is recalling certain X12 Diesel Engines, with part numbers D0S3005BX03 and D0S3009BX03. 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.
- What can happen if it is not put right?
- A high pressure fuel leak in the presence of an ignition source can increase the risk of a fire.
- Is there a fix yet?
- Yes, and it is free. On engines with 75 miles or less, 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.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Cummins calls this recall C2532, which is the number on the owner letter and the dealer paperwork.
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: “A high pressure fuel leak in the presence of an ignition source can increase the risk of a fire.”
affected
in the notice
caught
| Campaign | 21E099 |
|---|---|
| Filed by | Cummins, Inc. |
| System at fault | Fuel System, Diesel:Fuel Injection System:Fuel Rail |
| Reported to NHTSA | 1 December 2021 |
| Model years | 9999-9999 |
| Vehicles named | CUMMINS X12 |
What the notice says today
The consequence
A high pressure fuel leak in the presence of an ignition source can increase the risk of a fire.
The remedy
On engines with 75 miles or less, 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 Cummins customer service at 1-800-286-6467. Cummins' number for this recall is C2532.
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 197 notices in the record whose component field names fuel system, diesel. Across that group the median wait before owners were written to was 43 days.
Last checked . No change has been recorded in the wording.
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 21E099, wording as read on 16 September 2026. https://carsmultiverse.com/recall/21e099/
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 Cummins notices we hold
- 26E011: PD7000 Electric Drive, part number BES CM0904 EV104B
- 25E018: the high voltage battery packs in certain PowerDrive 7000 electric drivetrains
- 25E004: L9 diesel engines, part number D563027BX03
- 24V934: 2022-2024 Power Generation C275D2RE trailer-mounted generators
- 24V192: 2023-2024 Power Generation C275D2RE trailers
- 24E106: B6.7 Diesel Engines part numbers RA11741 and RA11769, and F3
- 24E038: Cummins L9 diesel engines with part number D563027BX03
- 23E080: L9N Natural Gas Engines, part number D883007BX03
All 45 Cummins 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 21E099 on 23 August 2026, they were:
- Defect summary
e088ccf0 - Consequence
fc5dc741 - Remedy
b63f4ddf
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 21E099 · how the whole register is watched
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