Suitable for W221 S550 CL550 V8 5.5L Engine Piston Ring 2730302117 A2730302117 This piston ring is designed to fit engines compatible with part numbers 2730302117 and A2730302117.It is engineered for use in V8 5.5L engine applications associated with the W221 chassis models.The component supports proper compression sealing between the piston and cylinder wall, contributing to efficient engine.manufactured to meet specifications, it under standard conditions.Installation requires adherence to standard mechanical procedures and compatibility verification with the specific engine unit. Compatibility Disclaimer: This is an part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.