ENGINESYSTEMS7
EngineIdentication
EngineSerialNumber
Figure1Engineserialnumber
1.EngineSerialNumber(ESN)location
2.Engineemissionlabel
3.Cylinderhead
4.Flywheelhousing
5.Crankcase
TheEngineSerialNumber(ESN)islocatedonthe
frontofthecrankcase(leftside),belowthecylinder
head.
EngineSerialNumberExamples
Navistar
®
N13:126HM2YXXXXXXX
EngineSerialNumberCodes
126–N13withSCRengines
H–Diesel,turbocharged,ChargeAirCooler(CAC),
andelectronicallycontrolled
M2–Motortruck
Y–Huntsville,Alabama
7digitsufx–Engineserialnumbersequence
EngineEmissionLabel
Figure22010U.S.EnvironmentalProtection
Agency(EPA)exhaustemissionlabel(example)
TheU.S.EnvironmentalProtectionAgency(EPA)
exhaustemissionlabelisontopofthevalvecover
(frontleftside).TheEPAlabeltypicallyincludesthe
following:
•Modelyear
•Enginefamily,model,anddisplacement
•Advertisedbrakehorsepowerandtorquerating
•Emissionfamilyandcontrolsystems
•Valvelashspecications
•EngineSerialNumber(ESN)
•EPA,OnboardDiagnostics(OBD),EURO,and
reservedeldsforspecicapplications