Catalyzes the reversible conversion of (R)-2-benzylsuccinate to (R)-2-benzylsuccinyl-CoA. Inactive with (S)-benzylsuccinate. (R)-2-benzylsuccinate + succinyl-CoA = (R)-2-benzylsuccinyl-CoA + succinate Inhibited by (S)-benzylsuccinyl-CoA. Xenobiotic degradation; toluene degradation. Heterotetramer composed of 2 BbsE subunits and 2 BbsF subunits. Induced by toluene. Belongs to the CoA-transferase III family.