Involved in the central benzoyl-CoA catabolism. Catalyzes the addition of one molecule of water to the double bond and the hydrolytic cleavage of C-C bond in the alicyclic ring, 6-oxocyclohex-1-ene-1-carbonyl-CoA (6-OCH-CoA) to yield 3-hydroxypimelyl-CoA. 6-oxocyclohex-1-ene-1-carbonyl-CoA + 2 H2O = 3-hydroxy-6-carboxyhexanoyl-CoA + H(+) Aromatic compound metabolism; benzoyl-CoA degradation. Homohexamer. Belongs to the enoyl-CoA hydratase/isomerase family.