State-of-the-art manufacturing technology and quality control systems ensure that Bosch Premium Wire Sets meet, and often exceed, the performance of the original equipment wire sets that they replace. That's true for all of the components, including the wire set boots and connectors.
  • Fiberglass braiding for flexibility and support
  • Latex silicone bonding for longer performance life
  • Snap-lock terminals or OEM-style connectors tightly crimped to the wires to exceed OEM standards for worry-free installation and re-installation
  • 100% pure silicone jacketing for lifetime protection
  • EDPM inner insulating layer to stop power-robbing voltage leaks

Bosch 09621 Premium Spark Plug Wire Set


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