This part may be either a vacuum, hydraulic, or electric booster. CTS 10-13 V-Series. CTS 14 Cpe, V-Series. CTS 14 Sdn, VIN D (4th digit, V-Series). CTS 14 SW, V-Series. CTS 15 Cpe. AUTOMATIC TRANSMISSIONS WILL HAVE THE FILTER REMOVED AND IT MUST HAVE A NEW FILTER INSTALLED WITH NEW FLUID TO FUNCTION.