STD Engine Piston Ring Set for Mondeo 2.0 Auto Parts Car Accessories 1S7G-6K100-DG 6M51-6148-BA Automotive Piston Pin Clip This piston ring set is designed for use with Mondeo 2.0 engine models.It includes a complete set of piston rings and piston pin clips, compatible with part numbers 1S7G-6K100-DG and 6M51-6148-BA. Compatibility Statement: This is not an manufacturer part.Brand/model references are used for fitment guidance.