How can I add Parts Finder block on homepage?
In order to add and employ the Product Parts Finder block on the homepage, it is required to add the finder block code:
block class="Amasty\Finder\Block\Form" block_id="finder_form" location="cms" id="2"
in the Content text field of the CMS page "Homepage". After that flush your Magento cache and check how it works for you.