Hello! It appears that the other part of this control arm is no longer available. You may have to purchase second hand or use a one piece aftermarket alternative

Hi, Control arms are different in vehicles. This a 2 piece design. For accuracy of fitment, please follow the guidelines below. To check the fitment please use our Vehicle Selector — which can be found towards the top of the homepage as well as all category, search results, and product pages — can help verify if a part will fit your specific application. To enter your application, simply select your vehicle’s year, make, model, sub-model, and engine type and click “Go.” Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page.