Durable Low fuel consumption Reasonable price used for YANMAR 6RAL-160 engine In GB5264-85 ... quality of plunger and plunger sheath, 0.0005mm used to group them,then put the suitable diameter of ... , after taking it out, daubing the abrasive paste for dynamic mutual abrasion . Cleaning the abrasive paste and sliding ... ,or dynamic mutual abrasion again. P3 plunger used for YANMAR 6RAL-160 engine