The rings or "bushings" of the original differential are of poor quality, with the years and/or sudden accelerations they end up drying out or cracking. These 3 rings contain oil so consequently once cracked the ring will lose its rigidity. In certain cases a dry knocking when engaging the clutch will then be heard! Any owner who uses his car a minimum will undoubtedly appreciate this improvement!!

SYMPTOMS:
-Oil residue under the rear ring
-Crack in the ring often visible
-Clutch creaking is to be expected in advanced conditions.
-The rear axle bounces are caused by the original bushings, even if they are in good condition!