I have replaced the coolent elbows so many times I have it down to a 10 min job. All the plastic ones from any parts store are crap..... You shouldnt have a problem with the alum ones from zzp. I had a set that was only about a month old blow out after passing a 85 ford f150. Its just a shame he had all that fluid on his windshield. Then he passed me as I was broke down on the side of the road.