Redirect to 404 (wordpress)

Redirect any template to 404 page.

<?php
  global $wp_query;
  $wp_query->set_404();
  status_header(404);
  nocache_headers();
  $template = get_query_template('404');
  if ($template) {
    include $template;
  }
  exit;
?>

template.php

< toolbox