Used on constant speed motor for apu on hu25a falcon jet aircraft. 3.822 nom in l x 2.780 nom in w by 1.010 nom in h; 4 mounting holes 0.280 nom in dia; rectangle opening in center 1.842 nom in l by 1.642 nom in w; 2 half moon shaped grooves for roller bearings 0.313 nom in w by 3.290 nom in l