BorgWarner VM-320 Vacuum Modulator is a vacuum‑based control device used in automatic transmissions, identified by the VM‑320 designation within BorgWarner’s VM series. It uses engine manifold vacuum to influence the transmission's hydraulic control signals, helping adjust shift timing in response to changing engine load. The VM‑320 is a mountable component with vacuum connections designed for compatibility with BorgWarner‑equipped transmission configurations.
