Eccentric Disc Ball Joint PORSCHE 928 S4 GT '87- Control Arm Remanufactured Original Part, Non-Exchange Description: This eccentric disc is used to bolt the ball joint to the lower control arm. The axle geometry can be adjusted by rotating it. Four eccentric discs are required per vehicle. We also stock the matching control arms and brackets. Brand Information: This product is an original Porsche spare part that has been professionally remanufactured for you by specialized industrial partners. Reference numbers: 928.341.466.01 Scope of delivery: As shown in the illustration Suitable for: 928 from '87-Show moreShow less