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Review on πŸ”₯ SWI Parts Spark Plug Boot Heat Shield - Thermal Insulator for Protection, 1" ID x 6" Long (Pack of 8) by Micheal Wright

Revainrating 5 out of 5

Not expensive and not bad.

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.

Pros
  • Great design
Cons
  • Not sure