The fourth-era 4A-GE engine was developed from 1991 to 1995. It's silver cam covers with chrome lettering, hence the nickname "silver major". This engine another time capabilities a totally new cylinder head which takes advantage of 5 valves per cylinder rather than 4. It works by using Toyota's Variable Valve https://4age20vblacktopforsale90134.blog-eye.com/40123113/top-guidelines-of-jdm-toyota-4a-ge