Engine Parts Piston Rings Set 103mm Fit 6.1 L For Cherokee 300 Challenger SRT8 6.1L V8 Gas 2M4907 Piston rings set with a 103mm diameter designed for use in 6.1L V8 engines.Compatible with specific models including Cherokee, 300, and Challenger SRT8.This set supports proper compression and oil control within the engine cylinder.The rings are engineered to fit standard 103mm bore applications and are intended for replacement or rebuilding engine blocks.Suitable for use in vehicles requiring 2M4907.