Airtex 4C2041 Direct Ignition Coil-on-Plug Boot

The Airtex 4C2041 is a direct-fit Coil-on-Plug (COP) ignition coil boot designed to restore the critical connection between the ignition coil and spark plug in coil-on-plug ignition systems. COP boots serve as the insulating and conducting interface that transfers high-voltage spark energy directly to the spark plug, and a worn or cracked boot can result in misfires, rough idle, and reduced fuel efficiency.

Key Features:

• Direct replacement for OE-style coil-on-plug boot — no modification required
• Constructed from heat-resistant materials engineered to withstand the extreme thermal cycling of the engine bay
• Includes an internal conductive spring to ensure consistent, reliable spark transfer from coil to spark plug
• Resists degradation from oil, fuel, and coolant contamination common in the engine environment
• Designed to maintain a secure, moisture-resistant seal to prevent voltage leakage and cross-fire
• Manufactured by Airtex Automotive Division, a trusted name in fuel and ignition system components

COP ignition boots are a commonly overlooked maintenance item. Over time, heat, abrasion, and chemical exposure cause the boot material to crack or harden, leading to high-voltage spark leakage and engine misfires. Replacing the boot restores proper ignition performance and helps protect the ignition coil from damage. Cross-reference part numbers for this boot include: ICB45, SPP69E, 58941, 906S, and CC38.