The fourth-era 4A-GE engine was manufactured from 1991 to 1995. It has silver cam covers with chrome lettering, that's why the nickname "silver major". This engine another time options a completely new cylinder head which employs five valves for each cylinder instead of four. It takes advantage of Toyota's Variable https://4age-20v-turbo-engine-for79900.blogpostie.com/53010475/the-definitive-guide-to-4age-for-sale