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When we consider that the Mercedes 190E's spring perch, also known as the rear control arm to knuckle bushings, is a high load/ high wear bushing that sits very close to the ground as are consistently exposed to road debris causing the OEM rubber bushings to be well known to fail over time. Once the OEM rubber seals have deteriorated on the original style bushings, the main center section will begin to gather grime and will eventually cause the entire bushing to fail, as well as cause your steering to feel mushy, disconnected, and sloppy overall.
To get around the failure-prone OEM rubber bushings, our 190E rear control arm to knuckle (spring perch) bushings are made of solid Delrin and therefore are not nearly as suspectable to failure as the OEM units are. Solid Delrin spring perch bushings have a tighter overall fit and feel keeping your rear end in check and limiting the amount of deflection within your suspension when under load, similar to the 190E DTM cars of the 90s. Unlike OEM units, these Delrin units should never need to be replaced, and as always, all of our bushings have a lifetime warranty, so there will never be a need to purchase another control arm bushing again!