Impreza 20414FL00B 20414FL01B
Outback 20414XC00B 20414AL00B
Fix for Subaru knocking sound over bumps, squeaking sound from stabilizer bushing
Vehicles covered by Subaru service bulletin #05-88-21R
New stabilizer bushing part numbers to correct Subaru knocking sound or squeaking sound
©, 2023 Rick Muscoplat
Posted on by Rick Muscoplat
Subaru has issued a service bulletin #05-88-21R to address a Subaru knocking sound, squeaking sound from the stabilizer bushings. The bulletin applies to the vehicles listed below. Subaru has made a design change to the front stabilizer bushings by enhancing the the bushing material to address the knocking and squealing sounds when driving on rough roads.