turbo188The G188 is, I think, is Cases gaso engine. The D188 is the diesel version of the same thing. They were used extensively in Case backhoes and in the small dozersPart Number: 171770: Previous Part Number: 178472 : OE Number: 1885156, 188-5156, 10R0371: Year: 2000-11: Description: Earth Moving: Application : D6 Tractor : CHRA