VT 275 OVERVIEW Engine Serial Number The Engine Serial Number (ESN) for the VT 275 is located on a machined surface at the left rear corner of the crankcase just below the cylinder head. The ESN identifies the engine family, the build location, and the sequential build number. Engine Serial Number Example 4.5HM2Y0135617 4.5 = Engine displacement H = Diesel, Turbocharged M2 = Motor Truck Y = Huntsville 0135617 = Build Sequence Emissions Label The Environmental Protection Agency (EPA) emissions label is on top of the breather, toward the front, on the left valve cover. The label includes the following:
-Advertised horsepower rating -Engine model code -Service application -Emission family and control system -Year the engine was certified to meet EPA emission standards. Cylinder Numbering • The cylinders on the VT 275 are numbered from the front of the right bank 1, 3, 5 and from the front of the left bank 2, 4 and 6. Front L R 2 1 The engine firing order is 1-2-5-6-3-4 4 3 6 5 International ® VT 275 V6 Engine 7