How to override headers (h1,h2,h3..) in av-share-box or other theme parts

Hi,
I would like to add a filter to override the helper-social-media.php to rewrite this part of code, and change h5 for h4.
I tried doing it adding the same code to my enfold-child functions.php with the litte change ( it works), but I thinking is so much better If I do it with a filter. (only about 5 lines of code).

$this->html .= "<div class='av-share-box'>";
	if($this->title){
		$this->html .= 		"<h5 class='av-share-link-description'>";
		$this->html .= 		apply_filters('avia_social_share_title', $this->title , $this->args);
		$this->html .= 		"</h5>";
}

I would like to know if I can do the same procedure for other parts of the enfold theme

So much thanks.