Front Ball Joint: Removal

Disconnect the ground cable from the battery.
Lift up the vehicle, and remove the front wheels.
Disconnect the front vehicle height sensor connector (models with auto headlight beam leveler, left side only).

Fig 1: Identifying Front Vehicle Height Sensor Connector
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Remove the front vehicle height sensor (models with auto headlight beam leveler, left side only).

Fig 2: Locating Front Vehicle Height Sensor
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Remove the both sides of stabilizer bracket.

Fig 3: Locating Stabilizer Bracket
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Pull out the pin from ball stud, remove the castle nut, and extract the ball stud from front arm.
Remove the bolt installing ball joint to housing.

Fig 4: Locating Bolt And Ball Joint To Housing
Courtesy of SUBARU OF AMERICA, INC.
Extract the ball joint from housing.