4 Set Piston Rings Kit for 2002-2012 Starex Porter Bongo D4CB 2.5 234104A920 Car Engine Replacement Parts This piston rings kit is designed for use with 2.5L D4CB engines found in Starex, Porter, and Bongo models manufactured between 2002 and 2012.The set includes four piston rings engineered to fit the specified engine model and replace the components during engine maintenance or rebuild.The kit supports proper compression and oil control within the engine cylinders.It is intended for use as a direct replacement part identified by OEM number 234104A920.Installation requires standard mechanical tools and knowledge of engine assembly procedures. This is an independent replacement component.References to brands or models are solely for compatibility indication.