MSD 34575 90-Degree Gray Silicone Spark Plug Boots, Non-Logo, 50-Pack

The MSD 34575 is a bulk pack of 50 gray silicone 90-degree spark plug boots, ideal for building custom spark plug wire sets or replacing worn boots on existing ignition wires. These are non-logo versions, making them a clean, professional choice for custom builds where branding is not desired.

Key Features:

• 90-degree angled design — optimized for tight engine bays where straight boots won't clear headers, valve covers, or other components
• Gray silicone construction — provides superior heat resistance and long-term durability compared to standard rubber boots
• Excellent heat resistance — engineered to withstand the extreme underhood temperatures common in performance and racing applications
• Maximum spark loss protection — maintains a tight, secure seal around the terminal to prevent misfires and energy loss
• Non-logo style — clean appearance for custom wire builds without MSD branding
• Bulk pack of 50 — ideal for shops, builders, or anyone assembling multiple wire sets
• Compatible with MSD Super Conductor and 8.5mm spark plug wire
• Emissions compliant — legal for use on emissions-controlled, non-emissions-controlled, and racing-only vehicles

MSD spark plug boots are engineered with longevity in mind, delivering reliable performance from street-driven vehicles to all-out racing builds. Part number 34575 pairs with MSD's matching 90-degree terminals (sold separately) for a complete custom plug wire assembly.