Required for installation is special tool [4019](https://www.fcpeuro.com/products/volvo-ball-joint-installation-tool-s60-v70-s80-xc70-xc90-cta-4019), without this tool you will not be able to press the ball joint and may permanently damage the knuckle. The fitment of this part includes VIN splits, a method Volvo uses to classify specific vehicle fitment when a part changes mid-year. If you need help regarding a fitment note, please contact customer service with your VIN.