Section 1 - Engine Systems; Engine Serial Number; Engine Emission Label - Navistar MaxxForce 7 Operation And Maintenance Manual

Engine Serial Number

Figure 1 Engine Serial Number
The engine serial number is stamped on the crankcase pad, on
the rear left side below the cylinder head.
Engine Serial Number Example
6.5HM2YXXXXXXX
6.5 – Engine family code
H – Diesel, turbocharged, Charge Air Cooler (CAC), and
electronically controlled
SECTION 1 – ENGINE SYSTEMS
M2 – Motor truck or U2 power unit and OEM (sold to original
equipment manufacturer)
Y – United States, Huntsville Alabama
7–digit suffix – Engine serial number sequence

Engine Emission Label

Figure 2 The U.S. Environmental Protection Agency (EPA)
Exhaust Emission Label (Example)
The U.S. Environmental Protection Agency (EPA) exhaust
emission label is located on top of the Exhaust Gas Recirculation
(EGR) manifold mixer, on the front of the engine. The label
includes the following:
• Advertised brake horsepower ratings
• Engine model code
• Service applications (light heavy or medium heavy)
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