Recall 15V309 covers 4,823 2008-2016 Kenworth trucks with Cummins ISL G engines for crankcase vent elbow detachment. Repair is free at any franchised Kenworth dealer.
Kenworth is recalling 4,823 2008-2016 T800, W900, T440, 348, 365, 384, 382, 337 and 320 trucks with certain Cummins Westport ISL G engines. Excessive crankcase pressure can detach a 90-degree vent-tube elbow, letting oil contact hot surfaces and raising fire risk; Kenworth dealers will complete the repair free of charge.
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What's wrong?
The open crankcase ventilation breather on the 2008-2016 Kenworth trucks filters oil out of pressurized combustion gases that escape from the engine crankcase during normal operation. A vent tube assembly connects to that breather and directs those gases down toward the bottom of the engine, away from hot engine surfaces.
In campaign 15V309, excessive crankcase pressure can force the 90-degree elbow of that vent tube assembly off the crankcase breather. Once the elbow detaches, engine oil is no longer routed as designed. Oil can reach hot surfaces in the engine compartment, which increases the risk of fire.
There is no warning sign before failure. The filing does not identify a warning light, sound, or drivability change that tells an owner the elbow is about to detach.
Who's affected?
Spans 9 truck models across the 2008 to 2016 model years, all tied to the engine component.
| 2012 Kenworth T800 | Engine |
|---|---|
| 2012 Kenworth W900 | Engine |
| 2012 Kenworth T440 | Engine |
| 2013 Kenworth T800 | Engine |
| 2013 Kenworth W900 | Engine |
| 2014 Kenworth T800 | Engine |
| 2014 Kenworth W900 | Engine |
| 2014 Kenworth T440 | Engine |
| 2015 Kenworth T440 | Engine |
| 2015 Kenworth T800 | Engine |
| 2015 Kenworth W900 | Engine |
| 2015 Peterbilt 348 | Engine |
| 2016 Kenworth T440 | Engine |
| 2016 Kenworth T800 | Engine |
| 2016 Kenworth W900 | Engine |
| 2008 Peterbilt 365 | Engine |
| 2013 Peterbilt 365 | Engine |
| 2014 Peterbilt 365 | Engine |
| 2015 Peterbilt 365 | Engine |
| 2009 Peterbilt 384 | Engine |
| 2011 Peterbilt 384 | Engine |
| 2008 Peterbilt 348 | Engine |
| 2009 Peterbilt 348 | Engine |
| 2012 Peterbilt 348 | Engine |
| 2008 Peterbilt 382 | Engine |
| 2010 Kenworth T440 | Engine |
| 2011 Kenworth T440 | Engine |
| 2013 Kenworth T440 | Engine |
| 2008 Peterbilt 384 | Engine |
| 2011 Peterbilt 337 | Engine |
| 2015 Peterbilt 382 | Engine |
| 2009 Peterbilt 365 | Engine |
| 2011 Peterbilt 365 | Engine |
| 2012 Peterbilt 365 | Engine |
| 2015 Peterbilt 337 | Engine |
| 2013 Peterbilt 337 | Engine |
| 2013 Peterbilt 384 | Engine |
| 2014 Peterbilt 384 | Engine |
| 2014 Peterbilt 382 | Engine |
| 2013 Peterbilt 348 | Engine |
| 2014 Peterbilt 348 | Engine |
| 2014 Peterbilt 320 | Engine |
| 2013 Peterbilt 320 | Engine |
| 2012 Peterbilt 320 | Engine |
| 2009 Peterbilt 320 | Engine |
| 2008 Peterbilt 320 | Engine |
| 2012 Peterbilt 337 | Engine |
| 2012 Peterbilt 384 | Engine |
| 2015 Peterbilt 384 | Engine |
| 2009 Peterbilt 382 | Engine |
| 2010 Peterbilt 382 | Engine |
| 2011 Peterbilt 382 | Engine |
| 2012 Peterbilt 382 | Engine |
| 2013 Peterbilt 382 | Engine |
| 2010 Peterbilt 365 | Engine |
| 2010 Peterbilt 348 | Engine |
| 2011 Peterbilt 348 | Engine |
| 2008 Peterbilt 337 | Engine |
| 2009 Peterbilt 337 | Engine |
| 2010 Peterbilt 337 | Engine |
| 2010 Peterbilt 384 | Engine |
| 2014 Peterbilt 337 | Engine |
| 2015 Peterbilt 320 | Engine |
| 2010 Peterbilt 320 | Engine |
| 2011 Peterbilt 320 | Engine |
| 2010 Kenworth T800 | Engine |
| 2010 Kenworth W900 | Engine |
| 2011 Kenworth T800 | Engine |
| 2011 Kenworth W900 | Engine |
| Units affected | 4,823 |
| Field incidents | NHTSA has logged no field incidents to date. |
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?
Engine oil on a hot surface increases the risk of a fire. This recall is about fire risk, so schedule the repair soon and treat smoke or active oil loss as a reason to stop and call for service. Repair is free at any franchised Kenworth dealer.
What should I do?
- Check your VIN to confirm your 2008-2016 Kenworth T800, W900, T440, 348, 365, 384, 382, 337, or 320 is included in this recall.
- Contact a franchised Kenworth dealer or Cummins service center to schedule the free vent-tube elbow securement and ECM software update that limits crankcase pressure and helps keep engine oil off hot surfaces.
- Bring the recall notice if Kenworth has mailed one. If not, reference recall number 15V309 when you call.
- Call Kenworth customer service at 1-425-828-5000 with questions before the appointment.
- Watch for oil smell, visible oil leaks, or smoke, and stop operating the truck until the dealer or service center gives instructions.
What happens at the repair
At the service center, a Kenworth technician secures the ends of the 90-degree elbow on the crankcase ventilation breather and reprograms the electronic control module with software that adjusts engine output under misfire conditions to limit crankcase pressure. Parts and labor are covered under the recall. PACCAR has a general reimbursement plan on file, so owners who already paid for a related repair can ask the service desk how to submit documented expenses under that plan.
| Reimbursement | Reimbursement available |
|---|
Timeline
| May 26, 2015 | NHTSA published the recall |
|---|---|
| June 12, 2015 | Owner notification mailed |
Frequently asked questions
What is recall 15V309?
Recall 15V309 covers 4,823 2008-2016 Kenworth trucks with certain Cummins Westport ISL G engines. Excessive crankcase pressure can detach the vent tube elbow, letting engine oil reach hot surfaces and increasing fire risk. The free repair secures the elbow ends and updates the engine control software.
What should I do if my 2008-2016 Kenworth T800, W900, T440, 348, 365, 384, 382, 337, or 320 is on this recall?
Check your VIN to confirm your specific truck is included in recall 15V309. If it is, contact a Kenworth service desk or Cummins service center and reference recall 15V309, plus Kenworth recall number 15KWH or Cummins number 515-G. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to fix the safety defect at no cost, and this recall says the Cummins service center repair is free. The work includes securing the vent tube elbow ends and reprogramming the electronic control module.
What is the safety risk?
The safety risk is fire. If the crankcase ventilation elbow detaches, engine oil can contact hot surfaces, increasing the risk of a fire. Until your VIN is checked and the repair is completed, watch for oil leaks, oil smell, smoke, or other signs that need service attention.
When did the recall repair become available?
The recall repair began on June 12, 2015. Because that date has passed, owners with included VINs should ask a Kenworth service desk or Cummins service center to verify recall 15V309 and schedule the free repair work.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/15V309000 |
|---|---|
| Kenworth customer service | 1-425-828-5000 |
| NHTSA recall # | 15V309 |
| NHTSA recall # (full) | 15V309000 |
Source documents
-
Download Owner Notification Letter (PDF) - Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 1, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →