Restore clean spark insulation across the ignition system with the ThunderCore PRO Coil Boot Kit (P/N 900-P2085-6). This ThunderSpark OE-Replacement kit drops in for the 2011-2014 Chrysler 200, 2011-2016 Chrysler 300, 2011-2015 Chrysler Town & Country, 2011-2014 Dodge Avenger, Challenger, Charger, Durango and Journey, 2011-2015 Dodge Grand Caravan, 2011-2015 Jeep Grand Cherokee, 2012-2015 Jeep Wrangler and 2012-2013 Ram C/V — see the "Vehicles it fits" section for the full list and engine coverage.
In coil-on-plug (COP) and coil-near-plug (CNP) setups, the coil boot forms the insulative path between the ignition coil and the spark plug. Over time these boots can degrade from heat, vibration, or chemical exposure — signs the boots may need replacing include arc-through, misfires, or hard starting. If worn 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: high-temp silicone and reinforced materials help resist oil, fuel, and under-hood heat.
- Restores Ignition Insulation: replaces worn or cracked boots to support proper spark isolation and limit voltage loss.
- Complete Kit Coverage: includes the boots, springs, and insulators needed for full-cylinder service — ideal for tune-ups and repairs.
Interchange: 136027
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What's included in this Coil Boot Kit?
The kit includes the boots, springs, and insulators needed for full-cylinder service, making it well suited for ignition tune-ups or preventative maintenance.
What does a coil boot do?
In coil-on-plug (COP) or coil-near-plug (CNP) systems, the 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 my coil boots may need replacing?
Boots can degrade from heat, vibration, or chemical exposure, which may lead to 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 applications like the 2011-2016 Chrysler 300, 2011-2015 Jeep Grand Cherokee, and 2012-2015 Jeep Wrangler. Check the "Vehicles it fits" section to confirm your exact year, make, and model.
What are the boots made from?
Each boot is constructed from premium silicone and other high-temperature materials engineered to withstand engine bay conditions and resist oil, fuel, and under-hood heat.
