The Improvement of Learning Outcome for the subject of Power Tain Automative System by Implementing Cooperative Learning. The aim of this research is to apply cooperative learning strategy for the subject of Power Train Automative System (PTAS) by using the internet as activator which can improve communications and interaction betwen the students and the lecturer as well as cooperative attitude among student within group task in PTAS subject. The expected result of this research is that there will be ajn alternative learning model of which can improve the quality of learning process for PTAS subject attain better academic outcome and sharpen the ability of coorporative work. Particularly the student will also have a new strategy on how to learn and a new role on how to conduct coooporative learning and being active within group as participator. This new strategy will also influence students activities on how they are accestomed to finish some given problems. The results of the research shows that the cooperative learning strategy enables the student to explore their ability in various aspects cognitive social and affective as well.