Pro-Boot Shield

American Made Since 1985

Pro-Boot Shield

Next-Gen Spark Plug Protection, Track-Tested Tough

Spark plug boot protectors help prevent ignition miss-fires by shielding spark plug boots from excessive heat damage.

Protects spark plug boots from extreme heat, dirt, and debris
Superior to OEM metal heat shields
Tac Armor® liner adds extra thermal insulation and durability
Made from 25% stronger Basalt Lava® fiber—outperforms standard fiberglass
Installs easily over straight or 135° plug boots—no special tools required
Based on 40 years of proven heat protection performance
Made in the USA

1200

649 °C

Continuous

2000

1093 °C

Intermittent

Brochure

Product Types

400122

Lava - 1-in id x 6 in (x2)

400128

Lava - 1-in id x 6 in (x8)

400130

Lava - 90 deg (x2)

400132

Lava - 90 deg (x8)

400142

Stealth - 1-in id x 6 in (x2)

400148

Stealth - 1-in id x 6 in (x8)

400150

Stealth - 90 deg (x2)

400152

Stealth - 90 deg (x8)

Pro-Boot Shield – High-Performance Spark Plug Boot Protector

Protect your ignition system with the Pro-Boot Shield, a next-generation spark plug boot protector engineered for modern engines. Proven since 1991, this design now meets the demands of today’s high-performance ignition systems.

Reliable Heat Protection with a Clean, Professional Look

The Pro-Boot Shield is longer than our original Insul-Boot and specifically designed for DIS ignition systems and modern engine layouts. Made from basalt Lava® fiber, it’s 25% stronger than traditional fiberglass and built to handle extreme heat and harsh conditions. The rugged design resists abrasion, chemicals, oil, and acid for long-term durability. Tac Armor® liner adds extra thermal protection and heat resistance. A hook-and-loop fastener keeps out heat, dirt, and debris. It installs easily and delivers a clean, professional-grade finish.

Easy Installation – No Special Tools Required

Installing your spark plug boot heat shield is quick and simple. Just slide the Pro-Boot Shield over a straight or 135° spark plug boot, press it down fully, then install the boot onto the spark plug until it clicks into place. Finish by wrapping and sealing the hook-and-loop fastener around the wire for a secure, heat-resistant fit.

Modern Protection for Modern Engines

Don’t rely on outdated solutions for today’s high-performance ignition systems. Upgrade to the Pro-Boot Shield spark plug protector and get long-lasting durability, superior heat insulation, and a clean, factory-quality look—right from your garage.