Recall 15V457 affects 334 2016 Kenworth T-series and W900 trucks for reversed brake air lines. Repair is free at a franchised Kenworth dealer.
Kenworth is recalling 334 2016 T440, T470, T660, T680, T800, T880, and W900 trucks because an SR-7 spring brake valve assembly was installed with service brake applications reversed. If one brake circuit fails, the backup circuit would not provide adequate service braking, and loss of braking ability increases crash risk; Kenworth dealers will repair the trucks free of charge.
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What's wrong?
The air brake system on 2016 Kenworth T660, T680, T880, T440, T470, T800, and W900 trucks uses an SR-7 spring brake valve assembly to manage service brake air pressure. In normal operation, primary and secondary brake circuits give the truck a backup path, so braking remains available if one air circuit fails.
On affected trucks, the factory installed the primary and secondary service brake application connections in reverse at the SR-7 valve. That incorrect piping means the redundant circuit does not provide adequate service braking after a primary or secondary circuit failure. The truck also does not meet the FMVSS 121 emergency stopping distance requirement tied to that backup braking function.
There is no warning sign before failure. The problem is in how the air lines are connected, so a driver is unlikely to feel a difference during normal braking until a primary or secondary air system failure exposes the reduced backup braking.
Who's affected?
Covers multiple Kenworth T-series models plus the W900, all tied to the brake system.
| 2016 Kenworth T660 | brake system |
|---|---|
| 2016 Kenworth T680 | brake system |
| 2016 Kenworth T880 | brake system |
| 2016 Kenworth T440 | brake system |
| 2016 Kenworth T470 | brake system |
| 2016 Kenworth T800 | brake system |
| 2016 Kenworth W900 | brake system |
| Units affected | 334 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Loss of braking ability increases the risk of a crash. If braking feels abnormal, slow down, stop in a safe place, and call a Kenworth dealer before driving farther. Repair is free at any franchised Kenworth dealer.
What should I do?
- Check your VIN to confirm your 2016 Kenworth T660, T680, T880, T440, T470, T800, or W900 is included in this recall.
- Contact a franchised Kenworth dealer to schedule the free air-line inspection and correction that fixes the reversed service-brake installation.
- Bring the recall notice if Kenworth mailed one. If not, reference recall number 15V457 and Kenworth recall 15KWK when you call.
- Drive cautiously until the repair is complete. Leave extra following distance and avoid hard braking when traffic allows.
What happens at the repair
At the dealer, a Kenworth technician inspects the SR-7 spring brake valve air line installation and corrects any reversed primary and secondary service brake connections. The repair is free under the recall, with parts and labor covered. The goal is to restore the redundant brake circuit so the truck has proper service brake function if one brake circuit fails. If your VIN is included, schedule the recall work with a Kenworth dealer and ask the service desk whether the inspection and correction are completed in the same visit.
Timeline
| July 22, 2015 | NHTSA published the recall |
|---|---|
| September 16, 2015 | Owner notification mailed |
| September 17, 2015 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| September 17, 2015 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 15V457?
Recall 15V457 covers 334 2016 Kenworth T660, T680, T880, T440, T470, T800, and W900 trucks with SR-7 spring brake valve assemblies requiring inspection for reversed primary and secondary service brake air-line installation. Kenworth dealers will inspect and correct the air line installation for free.
What should I do if my 2016 Kenworth T660, T680, T880, T440, T470, T800, or W900 is on this recall?
Check your VIN to confirm your specific truck is included in recall 15V457. If it is, contact a franchised Kenworth dealer to schedule the brake air-line inspection and correction. Reference recall 15V457 or Kenworth recall number 15KWK when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the safety defect at no cost. Kenworth dealers will inspect the affected trucks and correct the air line installation as required, free of charge.
What is the safety risk?
The safety risk is reduced backup braking after a primary or secondary air-brake circuit failure. In that failure condition, the redundant circuit would not provide adequate service brake function. A loss of braking ability increases the risk of a crash.
What if I bought this Kenworth truck used?
The free recall repair still applies. Recall coverage follows the truck, not the first owner. Check your VIN to confirm whether your specific 2016 Kenworth T660, T680, T880, T440, T470, T800, or W900 is included, then call a franchised Kenworth dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/15V457000 |
|---|---|
| Kenworth customer service | 1-425-828-5000 |
| NHTSA recall # | 15V457 |
| NHTSA recall # (full) | 15V457000 |
Source documents
-
Download Owner Notification Letter (PDF) - Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 31, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →