Restore dependable spark insulation across the engine with the ThunderCore PRO Coil Boot Kit 900-P2042-6, an OE-replacement kit built for coil-on-plug (COP) and coil-near-plug (CNP) ignition systems. It fits a wide range of applications, including the 2001-2006 and 2008 Ford Escape, 2005-2007 Ford Five Hundred, 2005-2007 Ford Freestyle, 2000 and 2004-2005 Ford Taurus, 2003-2008 Mazda 6, 2006 Mazda MPV, 2001-2006 and 2008-2009 Mazda Tribute, 2005-2006 and 2008 Mercury Mariner, 2005-2007 Mercury Montego, and 2000-2005 Mercury Sable — see the "Vehicles it fits" section for engine-specific coverage.
Coil boots form the insulative path between the ignition coil and the spark plug. Over time they can degrade from heat, vibration, or chemical exposure, which can lead to arc-through, misfires, or hard starting. If worn or cracked boots are the cause, this kit replaces them.
- OE Replacement Quality: engineered to match OE dielectric strength, boot length, and connector geometry.
- Heat & Chemical Resistant: constructed from high-temperature silicone and reinforced materials to resist oil, fuel, and under-hood heat.
- Restores Ignition Insulation: fresh boots re-establish proper spark isolation and secure coil-to-plug contact.
- Complete Kit Coverage: includes the boots, springs, and insulators needed for full-cylinder service — ideal for tune-ups and preventative maintenance.
Interchange: 126048 · CPBK220
Frequently Asked Questions
What does the ThunderCore PRO 900-P2042-6 kit include?
It includes the coil boots, springs, and insulators needed for full-cylinder service, making it suitable for ignition tune-ups or preventative maintenance.
What does a coil boot do?
In coil-on-plug and coil-near-plug systems, the coil boot forms the insulative path between the ignition coil and the spark plug, providing high-voltage insulation and secure coil-to-plug contact.
What are signs the coil boots may need replacing?
Boots degraded by heat, vibration, or chemical exposure can cause arc-through, misfires, or hard starting. Diagnose the cause first, since these symptoms can have other sources.
Will this kit fit my vehicle?
It's a direct-fit replacement for the listed applications, such as the 2001-2006 Ford Escape, 2003-2008 Mazda 6, and 2000-2005 Mercury Sable. Check the "Vehicles it fits" section for the full list.
What materials are the boots made from?
The boots are constructed from high-temperature silicone and reinforced materials designed to resist oil, fuel, and under-hood heat.
