Navistar Inc.  Heavy-Duty Engine
                   Recall
                     In May 2013, Navistar Inc. began recalling approximately 4,400
                     trucks that exceed pollution standards for nitrogen oxides, which
                   help protect the public from respiratory illnesses such as emphysema
                   and bronchitis. The affected models include 2011, 2012, 2013 and
                   2014 model year International trucks equipped with the 2010, 2011
                   and 2012 model year Navistar MaxForce 11 liter diesel engine.
                   California models are also included in this 50 state recall.

                   Navistar was required to recall some of the 2012 model year engines
                   because they exceeded a limit established for engines certified under
                   an EPA rule that allows manufacturers to produce and sell engines not
                   conforming to emission standards upon payment of a none onf or mane e
                   penalty (NCP).  Navistar agreed to recall the remaining engines,
                   certified and produced through an emissions averaging, banking,
                   and trading (ABT) program, because they exceeded their applicable
                   emission standards and contained the same cause of the exceedance as
                   the NCP engines. Navistar developed and tested a revised emissions
                   software calibration for the 2012 MY NCP engines so that they meet
                   the applicable emission standards.   The same calibration fix will be
                   applied to the ABT engines to bring them into compliance with the
                   cap established by that program.

                   Navistar has mailed notification letters to affected truck owners indicat-
                   ing they should contact a Navistar dealership for servicing.  Navistar
                   has indicated that the recall will not harm fuel economy. The repairs
                   change the software calibration and can be completed in approximately
                   30 minutes. However, to ensure mechanic availability and minimize
                   waiting, owners are encouraged to  contact a dealer to schedule an
                   appointment.
SEPA
United States
Environmental Protection
Agency
Office of Transportation and Air Quality
                EPA-420-F-13-038
                      June 2013

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Background
After failing to meet federal NOx emissions standards in MY 2012 engines, Navistar certified
their engines under an EPA NCP rule.  The NCP rule sets an upper limit on the amount emis-
sions can exceed standards and requires emission testing on production engines to demonstrate
compliance. Prior to and during the 2012 MY, Navistar certified and produced the same engine
design through an emissions averaging, banking, and trading (ABT) program, which established
an equivalent cap on emission standard exceedances to the NCP upper limit. Navistar agreed
that all ABT engines containing the same cause of the exceedance as the NCP engines should
also be recalled. Therefore, the 2010, 2011, and 2012 MY ABT engines were added to the
recall.
For More Information
For more information, please visit the Office of Transportation and Air Quality's website at:

          www.epa.gov/otaq/climate/regs-heavy-duty.htm

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