Following an inspection underneath my car to see what kind of nut n bolt corrosion i was in for before installed my tanabe axle back, i spotted my bottom insulators (#5 on diagram) all loose and chunks missing from them. I wiggled the tops (#3 on diagram) and they were just as bad. I didnt check the middle upper (#4 on diagram) but i can assume its like the others



Im in NY so is it really worth the $200+ to replace all of them just for them to get rusty and corrode again? What do they insulate heat? If i need them should i spray them with undercoating or something? So they dont corrode into the air, literally.