Transmission housing ventilation component description - GF27.40-P-2008GZ
TRANSMISSION 722.9 in MODEL 164.1 /8, 204.0, 216, 221, 251.0 /1 up to Model Year 8
Location
A duct cast in the torque converter housing connects the gear set chamber with the breather.
Task
The transmission housing breather ensures that a pressure equilibrium is maintained in the transmission housing in the event of temperature-related volume changes in the transmission fluid and air.