🔥 SWI Parts Spark Plug Boot Heat Shield - Thermal Insulator for Protection, 1" ID x 6" Long (Pack of 8) Review

Local auto parts store price for TWO was $20! This set was a great value and works as I hoped it would. Good quality and also good workmanship.

Thermal bushings seem to do a good job of reducing engine thermal damage, but the material quickly breaks down if the bushings come into contact with anything near them during operation. Use only when your cables are free of obstructions.

I have nothing to compare them to but they're pretty easy to put on 90 degree connectors, just a little fiddle and pull and they'll pull through . not really many people have touched my headers as they are quite bulky but they haven't burnt out and don't really show heat related wear, a lot overall. I wish I could put them on before I fry my 2 new connector wires.

is used on my 09 g8 with long kooks tubes and msd wires. It's been 6 months now and it's still holding up great. did not burn out even though both cylinder 3 and 4 wires touch the exhaust. The contact part has turned white but not burned out.

Doesn't fit my spark plug wires as the inside diameter is small, but you can make a small discreet cut in the spark plug cap and remove the inner metal ring, this will prevent it from slipping on the wire if it's too big. Besides, it's great. My wires don't burn anymore.

I don't have any comparisons but they fit the 90 degree plugs fairly easily, just a little tinkering and pulling and they'll pull through. I actually touched my headers as they are quite bulky but have not burned out and generally do not show heat related wear. I wish I could put them on before I fry my 2 new connector wires.