General Information: Validity

These guidelines for assessing the wheel suspension are only relevant for vehicles with forged control arms.  Die-cast and forged control arms can be differentiated based on the following illustrations:

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Lower trailing arm (part identifier 4017)

1. Die-cast lower trailing arm
2. Forged lower trailing arm

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Control arm (part identifier 4018]

1. Die-cast control arm
2. Forged control arm