An Easy Way to Get Engine Information，Model numbers are located on the cylinder block. Input your number below to learn more about your 2-Cycle or other Detroit-built engine. Model numbers consist of up to nine digits/letters that signify engine series, number of cylinders, application, rotation and type, design variations and specific model number.

Examples:  1 03 3 7 0 31

Your engine details:
1  Engine Series:71

03 Number of Cylinders:3 Cylinder

3  Application:FF Ind.

7  Rotation & Type:RC

0  Design Variations:N

31 Specific Model:Marine-Maximum-HE-Wet

MTU part numbers are very useful. This is an important basis for us to identify MTU parts and purchase MTU parts.