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Spark Plug Boot Heat Shield Sleeves
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Spark Plug Protection Koolsox

Koolsox Spark Plug Boot Protectors – 1200°F Heat Shield for Headers | Prevent Burn Damage

If you’re running headers, protecting your spark plug boots and wires from extreme heat isn’t optional—it’s critical. Koolsox delivers high-performance heat protection designed specifically for racing and high-heat engine environments.

Engineered with a double-layered fiberglass construction rated up to 1200°F, Koolsox shields spark plug boots from intense radiant and direct heat, helping prevent costly burn damage and misfires. Whether you're on the track or pushing performance on the street, Koolsox provides a reliable barrier where it matters most.

Designed for real-world performance, Koolsox features a flexible, stretchable sock that easily fits over irregular shapes, making installation quick and hassle-free. The adjustable ring design allows you to rotate the sock, giving you a visual indicator of potential hot spots, leaks, or developing burn areas—so you can catch issues before they become failures.

Built for durability and reuse, Koolsox is washable, long-lasting, and trusted by top racing teams for consistent protection under extreme conditions.

If you run HEADERS, you MUST run a set of KOOLSOXS. PREVENT SPARK PLUG BOOT BURNS!

Natural Color Up To 1200°F Degrees.

Key Benefits:

Protects spark plug boots from extreme header heat (up to 1200°F)
Prevents burn damage, misfires, and premature wire failure
Double-layer fiberglass construction for superior thermal protection
Flexible, stretch-fit design for easy installation over irregular surfaces
Adjustable ring allows rotation for inspection and extended product life
Reusable and washable for long-term value
Ideal for racing, performance builds, and high-heat engine applications

NOTE: Color Spark Plug Koolsox Sleeves Provide 900°F Protection

KOOLSOX Natual Color / 1200 °F Fiberglass SLEEVING

The Koolmat Difference

Koolsox double sewn inside. Better Option!

Competition poorly sewn inside. This will come apart. Just try to remove in one time.

Product Description – Koolsox Universal (Item #07500)

Koolsox Universal offers dependable heat protection for spark plug boots and wires in high-temperature engine environments. Designed in a flexible 1″ x 6″ fiberglass sock, this version provides the same trusted thermal protection.

Product Details:

Item: #07500
Size: 1″ x 6″
Fitment: Universal – fits most spark plug boots and wires
Material: High-temperature fiberglass sock
Design: No ring – streamlined, easy slip-on installation
Use: Shields boots and wires from intense header heat

Temperature Ratings:

Natural (1200°F): Maximum heat protection for extreme conditions
Colors (900°F): Suitable for moderate high-heat applications

Quantity Options

Single (1 piece)
Packs of 4
Packs of 6
Packs of 10

Available Options:

#07500-Natural – Rated to 1200°F
#07500C-Red – Rated to 900°F
#07500C-Black – Rated to 900°F
#07500C-Blue – Rated to 900°F

Buy individually or in convenient packs based on your setup.

Simple. Reliable. Built to protect your ignition components from heat damage.

Colored Koolsox - Red and Blue Shown (Available in Red, Black and Blue)

Item #07501 – Koolsox LS Natural 3/4″ x 8″

Qty’s available (1pcs), or can purchase in a pack of (8pcs)

Available through WestCoast Corvettes also

Item #07520 – Koolsox – TK/RV Natural (Also Fits Jacobs)

Size: 1-1/2″ x 7″
Quantity Available: Sold individually (1 pc)

Koolsox are specifically designed for 90° applications on truck and RV engines. Featuring an open-ended design on both sides, they allow for easy installation over spark plug boots and wires.