Product 404 Redirect byStenild

When you delete a product from your store, visitors who follow old links see a 404 error page. This hurts your search engine rankings and creates a poor shopping experience. Product 404 Redirects solves this by automatically creating a 301 redirect to the product's collection page the moment a product is deleted. There is nothing to configure. Install the app, and every deleted product is handled for you. Redirects use Shopify's built-in URL redirect system, so no theme changes are needed.