MSD 90 Degree Silicone Spark Plug Boots and Terminals 3311
Getting a spark plug wire to exit the spark plug at a tight 90-degree angle keeps the boot away from hot exhaust pipes and frame rails on custom motorcycle builds. MSD silicone spark plug boots are molded from high-temperature silicone with crimp terminals included so the wire connects securely without voltage loss at the spark plug end.
Key Features
- 90-degree angle routes wires away from exhaust heat and through tight clearances at the spark plug end
- Includes crimp terminals – large tabs grasp the wire and wide contacts grip the spark plug receptacle
- High-temperature gray silicone construction maintains flexibility and dielectric properties near exhaust heat
- Sold as a pair – two boots and two terminals per package
Technical Specifications
- Angle: 90 degree
- Style: Spark plug end
- Wire Diameter Compatibility: 8.5mm
- Material: Silicone
- Color: Gray
- Terminals Included: Yes (2 per package)
- Quantity: 2 per package (sold as a pair)
Fitment Notes
- Fits any ignition system using 8.5mm diameter spark plug wire – universal application; no motorcycle model selection required
- Use at the spark plug end; use MSD 3321 (90ยฐ) or 3322 (straight) socket coil boots at the coil or distributor end
- Use MSD 3503 mini stripper crimper to prepare wire ends before crimping the included terminals





James h. –
Perfect fit and quality