Febi Bilstein Ball Joint ProKit Front Axle Left Lower - 01521 - High Quality Fit. This product is a high-quality ball joint from Febi Bilstein, designed for the front axle's lower left side. The part number is 01521. Key Features: - Brand: Febi Bilstein - Quantity: 1 Unit - Cone Size: 17 mm - Fitting Side: Front Axle Left, Lower - Weight: 0.458 kg OE numbers for comparison: Audi 855 407 365 A, VW 855 407 365 A. Suitable for: Audi: 80 (81), 80 (89), 80 quattro (81), 80 quattro (89), 90 (81), 90 (89), 90 quattro (89), Coupe (85), Coupe quattro (85). VW: Passat 1 (32), Passat 2 (32), Passat 2 (33), Passat 2 syncro (33), Santana (32).