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ACDelco 16021 Professional Coil on Spark Plug Boot

Sale price $11.99 Regular price $34.99

  • Weather tight boot seal for protection against moisture intrusion
  • High temperature resistant silicone for protection against thermal overload
  • Stainless steel internal spring with resistor to suppress RFI and deliver maximum voltage to the spark plug
  • Premium, high-quality aftermarket spark plug boot