Recall 10V259 affects 1,220 2010-2011 International 4300M, Prostar, Lonestar, and 8600 trucks for loose pitman-arm fasteners. Repair is free at any franchised International dealer.
International is recalling 1,220 2010-2011 4300M, Prostar, Lonestar, and 8600 trucks under recall 10V259 because the fastener clamping the pitman arm to the steering gear shaft was under-torqued at assembly. Wear at that joint can let the pitman arm slip, reducing steering control and increasing crash risk; the dealer repair will be free once available.
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What's wrong?
The Pitman arm on 2010-2011 International 4300M, Prostar, Lonestar, and 8600 trucks is part of the steering linkage. It clamps to the steering gear shaft, then passes movement from the steering gear to the parts that turn the front wheels. That connection has to stay tight so the driver's steering input reaches the road wheels accurately.
On the affected trucks, the fastener that clamps the Pitman arm to the steering gear shaft was not tightened enough during assembly. A loose clamp lets the matching splines on the arm and shaft wear against each other instead of locking together. As that wear grows, the Pitman arm can slip over the shaft, which reduces steering control.
There is no warning sign before failure. If the connection slips, the steering response changes at the moment the driver needs control.
Who's affected?
Covers four International truck models across the 2010 and 2011 model years, all tied to the steering gear.
| 2010 International 4300M | steering gear |
|---|---|
| 2010 International Prostar | steering gear |
| 2010 International Lonestar | steering gear |
| 2010 International 8600 | steering gear |
| 2011 International 8600 | steering gear |
| 2011 International Lonestar | steering gear |
| 2011 International Prostar | steering gear |
| Units affected | 1,220 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Reduced steering control gives the driver less ability to keep the truck in its lane or respond to a hazard, increasing the risk of a crash. Schedule the recall repair soon and treat any steering-control concern as a reason to stop safely and call the dealer. Repair will be free at any franchised International dealer once available.
What should I do?
- Check your VIN to confirm your 2010-2011 International 4300M, Prostar, Lonestar, or 8600 is included in this recall.
- Check any International owner notice dated July 9, 2010, for repair instructions before you call.
- Contact a franchised International dealer to ask about the free pitman-arm fastener repair that restores the clamp between the pitman arm and steering gear shaft.
- Reference recall number 10V259 when you call so the service desk can find the campaign.
- Drive cautiously until the repair is complete. Leave extra room for steering response and avoid unnecessary trips.
What happens at the repair
At the dealer, an International technician repairs the steering connection affected by the recall. The filing identifies an undertorqued fastener that clamps the pitman arm to the steering gear shaft, so service focuses on securing that connection and correcting the steering gear attachment. Navistar's remedy states that dealers repair the vehicles free of charge. Parts and labor are covered under the recall.
Timeline
| June 14, 2010 | NHTSA published the recall |
|---|---|
| July 9, 2010 | Owner notification mailed |
Frequently asked questions
What is recall 10V259?
NHTSA campaign 10V259 covers 1,220 2010-2011 International 4300M, Prostar, Lonestar, and 8600 trucks with a pitman-arm fastener that was undertorqued during assembly. Wear at the splines between the pitman arm and steering gear shaft can reduce steering control and increase crash risk.
What should I do if my 2010-2011 International 4300M, Prostar, Lonestar, or 8600 is on this recall?
Check your VIN to confirm your specific truck is included in recall 10V259. If it is, contact a franchised International dealer to schedule the steering repair. Reference NHTSA campaign 10V259 when you call. The dealer repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and International dealers repair the affected steering components free of charge. Parts and labor are covered for trucks included in recall 10V259.
What is the safety risk in recall 10V259?
The safety risk is reduced steering control. NHTSA campaign 10V259 says the undertorqued pitman-arm clamp fastener can allow wear between the arm and steering gear shaft, which can let the arm slip over the shaft and increase crash risk.
What if I bought my International truck used?
The free recall repair still applies. Recall eligibility follows the VIN, not the original owner. Check your VIN to confirm whether your specific truck is included, then contact a franchised International dealer and reference recall 10V259 when you schedule service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/10V259000 |
|---|---|
| International customer service | 1-800-448-7825 |
| NHTSA recall # | 10V259 |
| NHTSA recall # (full) | 10V259000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 3, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →