You can download Google Installer 4.0 APK from trusted sources like:
: The storefront for downloading further applications. google installer 4.0 apk
The is a third-party utility application designed to automatically install Google Mobile Services (GMS) on Android devices that lack them. This includes Google Play Store, Google Play Services, Google Account Manager, and the Google Services Framework. You can download Google Installer 4
Please ensure that you download the APK file from a reputable source to avoid any potential risks. Google Play Services