MSD Silicone 90 Degree HEI Spark Plug Boots and Terminals 2 Per Card 3320

Worn or cracked spark plug boots compromise ignition efficiency and can cause misfires under boost or high RPM. MSD's silicone HEI boots deliver superior heat resistance and reliable spark transfer, keeping your ignition system sealed and performing consistently. Whether you're running a carbureted classic or a tuned street engine, these 90-degree boots provide the flexibility and durability needed for demanding applications.

The 90-degree angle design eliminates tight wire routing and reduces stress on connections, while the HEI socket terminals ensure a secure fit on compatible ignition systems. Installation is straightforward—simply slide them onto your 8.5 mm spark plug wires and secure with the terminal. Sold in pairs, so you get two boots ready to go out of the box.

• Silicone construction
• 8.5 mm wire compatible
• 90-degree angle design
• HEI socket terminals
• Superior heat resistance
• Prevents spark loss
• Quantity: 2 per card
• Bolt-on installation