The Cummins/Onan 6BTAA5.9 engine line groups 6 variant designations. Parts and
fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
Generator sets using this engine family
10AKSA ACD 165Atlas Copco QES 125Atlas Copco QES 140Atlas Copco XAHS 166CAtlas Copco XAVS 206CCummins/Onan 100DGDKCummins/Onan 125DGDKCummins/Onan 6BTAA5.9G2Cummins/Onan B5.9 Series C100D5PCummins/Onan B5.9 Series C125D5P