Draft

add_action( ‘woocommerce_before_single_product_summary’, ‘add_custom_content_for_specific_product’, 25 );
function add_custom_content_for_specific_product() {
global $product;

// Limit to a specific product ID only (Set your product ID below )
if( $product->get_id() != 65 ) return;

// The content start below (with translatables texts)
?>
    <div class="custom-content product-id-<?php echo $product->get_id(); ?>">
        <h3><?php _e("My custom content title", "woocommerce"); ?></h3>
        <p><?php _e("This is my custom content text, this is my custom content text, this is my custom content text…", "woocommerce"); ?></p>
    </div>
<?php
// End of content

}

add_action(‘woocommerce_single_product_summary’, ‘customizing_single_product_summary_hooks’, 2 );
function customizing_single_product_summary_hooks(){
remove_action(‘woocommerce_single_product_summary’,’woocommerce_template_single_title’, 5 );

}

remove_action(‘woocommerce_single_product_summary’, ‘woocommerce_template_single_title’, 5);

add_action(‘woocommerce_before_single_product_summary’, ‘woocommerce_template_single_title’, 5);