The fourth-technology 4A-GE engine was produced from 1991 to 1995. It's got silver cam covers with chrome lettering, therefore the nickname "silver prime". This engine another time functions a totally new cylinder head which takes advantage of 5 valves for each cylinder instead of 4. It employs Toyota's Variable Valve https://edwinariyo.blogunteer.com/38529458/details-fiction-and-4age-20v-for-sale