Motorcraft STB15 Spark Plug Boot Ignition Wire Insulator

The Motorcraft STB15 is a replacement spark plug boot designed to restore proper insulation and connectivity in your vehicle's ignition system. Motorcraft is Ford Motor Company's original equipment (OE) parts brand, and this boot is engineered to meet the same fit, form, and function standards as the factory-installed component.

Spark plug boots play a critical role in the ignition system by providing a secure, insulated connection between the spark plug wire and the spark plug itself. A cracked, worn, or heat-damaged boot can lead to misfires, rough idle, reduced fuel efficiency, and hard starting. Replacing a failed boot with a genuine Motorcraft part ensures reliable ignition performance and protects the spark plug wire terminal from corrosion and arcing.

Key Features:

• Genuine Motorcraft OE-quality replacement part
• Provides electrical insulation between spark plug wire and spark plug
• Resistant to heat, oil, and engine bay contaminants
• Designed to meet or exceed original equipment specifications
• Direct replacement for a proper, secure fit

The Motorcraft STB15 spark plug boot is a dependable choice for restoring ignition system integrity and is backed by Ford's commitment to quality and engineering precision.