OEMTOOLS 25039 Piston Ring Compressor (3 1/2"-7")

The OEMTOOLS Piston Ring Compressor is self-locking with double-tension band and heavy-duty pawl. It is designed to handle most types of rings in the majority of passenger cars, including those that are channeled and segmented. It has a beaded edge so that the compressor can't enter a cylinder with a piston. The 1/2 inch wide spring bands equalize the tension over the entire belt width so that the spring assembly may be compressed into the groove until it's flush with the piston.