Fatty acyl-CoA omega-hydroxylase essential for the production of omega-hydroxy fatty acids and the biosynthesis of triacylglycerol-/diacylglycerol-based estolide polyesters in the stigma. Substrate preference is 16:0-CoA > 18:1-CoA > 18:0-CoA. (9Z)-octadecenoyl-CoA + O2 + reduced [NADPH--hemoprotein reductase] = (9Z)-18-hydroxyoctadecenoyl-CoA + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] (9Z,12Z)-octadecadienoyl-CoA + O2 + reduced [NADPH--hemoprotein reductase] = (9Z,12Z)-18-hydroxyoctadecadienoyl-CoA + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] Mostly expressed in the developing stigma of floral buds. Weakly detected in leaves, stems and flowers. Belongs to the cytochrome P450 family.