Home › Forums › Coking › Technical › Heaters & Furnaces › ask Mule ear plug headers This topic contains 0 replies, has 1 voice, and was last updated by Freddy Martinez 7 years, 11 months ago. Author Posts December 20, 2012 at 7:48 pm #1775 Freddy MartinezParticipant I am looking for mule ear plug for air fin cooler. please recommend supply vendor. by my e-mail () best regard. Peter An. Author Posts You must be logged in to reply to this topic.