Cusco service pillowball nut listed for S13/14/15 and Subaru rear applications with a 12mm x 1.25 thread provides a direct replacement fastener for specific coilover top mounts. It restores proper clamping and secure pillowball attachment where those thread dimensions apply, making it useful during suspension servicing or component replacement on supported chassis.
Cusco Service Pillowball nut S13/14/15 & Subaru Rear 12mm x 1.25