ACDelco 10166846 Spark Plug Wire Heat Shield

The ACDelco 10166846 Spark Plug Wire Heat Shield is a GM Genuine Parts component designed to protect spark plug boots and wires from damaging heat in high-temperature engine environments. This OE-quality heat shield provides essential protection against both conductive and radiant heat, helping to prevent premature ignition component failure and ensuring reliable engine performance.

Key Features:

• GM Original Equipment specification for precise fit and function
• Maximum protection from conductive and radiant heat sources
• Provides strain relief and vibration resistance for spark plug wires
• Designed, engineered, and tested to rigorous GM standards
• Extends the service life of spark plug boots and wires
• Direct OE replacement for worn or damaged heat shields

This genuine ACDelco part (formerly marketed as ACDelco GM Original Equipment) meets factory specifications and is backed by General Motors quality assurance. Commonly used on GM trucks and SUVs with high-output engines where spark plug wire protection is critical for maintaining ignition system integrity.