Std Piston Ring Eq474i.1004030 For Dfsk Dongfeng Sokon Engine Eq474 1.3l Bus Spare Parts Piston ring model Eq474i.1004030 designed for use with the Eq474 1.3L engine. Compatible with DFSK Dongfeng Sokon vehicles and bus applications. This spare part is engineered to maintain proper compression and oil control within the engine cylinder. Constructed to meet standard specifications for fit and function. Intended for replacement in piston assemblies during engine maintenance or repair. Compatibility Disclaimer: This is an aftermarket replacement part. Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.