Moroso BBC Under Header 90 Deg Plug End HEI Sleeved Ultra Spark Plug Wire Set - Black

This is a Moroso BBC Under Header 90 Degree Plug End HEI Sleeved Ultra Spark Plug Wire Set in black. It's specifically made for big-block Chevrolet (BBC) engines where the spark plug wires need to route underneath the exhaust headers. This setup helps keep the wires away from the extreme heat of the headers, which can prevent premature failure and ensure consistent ignition performance.

The wires themselves are constructed with a high-resistance core and a silicone jacket, offering good durability and heat resistance. The 90-degree plug ends make installation easier in tight spaces, especially when working around headers. The HEI designation means they are designed to work with High Energy Ignition systems commonly found on these engines. The sleeving provides an extra layer of protection against heat and abrasion.

When installing these, pay attention to routing them carefully to avoid any kinks or sharp bends. Proper routing is key to getting the most life out of the wires and ensuring they don't touch hot exhaust components.