The fourth-technology 4A-GE engine was created from 1991 to 1995. It's silver cam covers with chrome lettering, as a result the nickname "silver best". This engine another time options a completely new cylinder head which employs five valves per cylinder in place of 4. It uses Toyota's Variable Valve Timing https://connernykpm.blog2freedom.com/31133001/little-known-facts-about-jdm-toyota-4a-ge