Track Control Arm. Please check the eBay 'Compatibility' section to see the manufacturers fitment data. If you wish to confirm whether a part will fit your vehicle please send us an eBay message including your vehicle reg number, vehicle details and the part you require and our expert staff will get back to you within 24 hours. All of the products we sell conform to European regluations and specifications. Interchange part numbers: OE: 3520S2S1, 3520S2, 3520K8S1, 3520K8, 3520, 3520…. We send our products by the selected delivery method within 24 hours and usually aim to dispatch same day if purchased before 12PM.