Moroso Ultra 40 Spark Plug Wire Set Big Block Chevy HEI 8.65mm 135° Boots

Moroso Ultra 40 Spark Plug Wire Set Big Block Chevy HEI 8.65mm 135° Boots

The Moroso Ultra 40 Spark Plug Wire Set is designed specifically for Big Block Chevy engines equipped with HEI (High Energy Ignition) systems. These high-performance spark plug wires are engineered to enhance ignition efficiency while providing a robust connection to the spark plugs. The 8.65mm diameter wire ensures optimal conductivity, allowing for improved energy transfer from the ignition coil to the spark plug, resulting in better combustion and engine performance.

Constructed with high-quality materials, the Ultra 40 wires resist heat and abrasion, enabling them to withstand the rigors of high-performance environments. Their 135° boots are designed to facilitate easy routing and installation, while also offering protection against heat and interference. This ensures that the ignition system functions reliably under various operating conditions, reducing the risk of misfires or performance drops.

Additionally, the Moroso Ultra 40 Spark Plug Wire Set features an ultra-low resistance design, which contributes to quicker throttle response and increased horsepower. By minimizing electrical resistance, these wires allow the ignition system to operate more effectively, ultimately leading to improved overall vehicle performance and efficiency.

FITMENT: Compatible with Big Block Chevy engines with HEI ignition systems.

Key Features & Benefits

• 8.65mm diameter for enhanced conductivity.
• 135° boots for optimal routing and installation.
• High-quality construction for heat and abrasion resistance.
• Ultra-low resistance design for improved throttle response.
• Prevents misfires and ensures reliable ignition performance.

Shipping. Free on every order, US only. Orders arrive in 2–4 days.

Returns. 60-day free returns, except in extreme cases.

Support. Our team is available 24/7 for fitment mismatches or any other reason.

Warranty. Full manufacturer guarantee.