Service bulletin TSIB 25-08
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11024489 |
| Published by NHTSA | 2025-10-25 |
| Manufacturer's number | TSIB 25-08 |
| Manufacturer's date | 2025-10-15 |
| NHTSA component | STEERING |
NHTSA's summary
MCI noticed that some customers operating in severe duty environments were experiencing the exterior U-Joints of the lower steering shaft binding due to corrosion. Because of this, MCI has developed a new re-greaseable U-Joint service kit (NF PN: 6505981) to replace the existing greased for life U-Joint on lower steering shafts. Rework instruction and preventive maintenance guide are provided below. Following this procedure and preventive maintenance will increase the life of MCI lower steering shafts.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Steering
| MCI D4020ISTV | 2024 to 2025 |
|---|---|
| MCI D4500 | 2024 |
| MCI D4505 | 2024 |
| MCI D4520 | 2024 to 2025 |
| MCI D45CRT | 2024 to 2025 |
| MCI D45CRTE | 2024 |
| MCI D45CRTELE | 2024 |
| MCI D45CRTLE | 2024 to 2025 |
| MCI J3500 | 2024 to 2025 |
| MCI J4500 | 2024 to 2026 |
| MCI J4500E | 2025 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.