Enables acetyl-CoA hydrolase activity and palmitoyl-CoA hydrolase activity. Involved in acyl-CoA metabolic process; long-chain fatty acid metabolic process; and short-chain fatty acid metabolic process. Located in mitochondrial matrix. Is expressed in dorsal root ganglion; trigeminal ganglion; and vagus ganglion. Orthologous to human ACOT9 (acyl-CoA thioesterase 9). [provided by Alliance of Genome Resources, Apr 2022]