Age and use cause the stock rubber bushings to degrade and cause excessive wear potentially breaking the housing and or driveshaft.
These upgraded polyurethane bushings hold the differential tighter than the stock bushings but not rigid where things have a propensity to break. If you notice clunking or excessive rocking in the diff consider picking up a set.
Check out this install video before purchase so you can see how these go in. https://youtu.be/ASVf_Yscsqo
Check out the rear h3 crossmember bushing install in this video
$155.00 Regular Price