Keep high voltage flowing cleanly from the coil to the spark plug with the ThunderCore PRO ThunderSpark Coil Boot Kit (P/N 900-P2071-4). This OE-replacement kit drops in across a wide GM lineup, including the 2010-2014 Buick LaCrosse, 2011-2014 Buick Regal, 2006-2010 Chevrolet Cobalt, 2007-2014 Chevrolet Malibu, 2010-2015 GMC Terrain, 2006-2010 Pontiac G6, and 2007-2010 Saturn Vue — see the "Vehicles it fits" section for the full list of applications.
In coil-on-plug (COP) and coil-near-plug (CNP) ignition systems, the coil boot serves as the insulative path between the ignition coil and the spark plug. Heat, vibration, and chemical exposure can degrade boots over time, leading to arc-through, misfires, or hard starting. If worn or cracked boots are the cause, this kit replaces them.
- Complete Kit Coverage: includes the boots, springs, and insulators needed for full-cylinder service — ideal for tune-ups and preventative maintenance.
- Heat & Chemical Resistant: constructed from high-temperature silicone and reinforced materials to resist oil, fuel, and under-hood heat.
- Restores Ignition Insulation: replaces worn or cracked boots to help maintain proper spark isolation and secure coil-to-plug contact.
- OE Replacement Quality: engineered to match OE dielectric strength, boot length, and connector geometry.
Interchange: 114036 · 9023S
Frequently Asked Questions
What does this coil boot kit do?
The coil boot forms the insulative path between the ignition coil and the spark plug in coil-on-plug and coil-near-plug systems, helping maintain high-voltage insulation and secure coil-to-plug contact.
What's included in the kit?
It includes the boots, springs, and insulators needed for full-cylinder service, making it suited to ignition tune-ups or preventative maintenance.
What are signs my coil boots may need replacing?
Boots can degrade from heat, vibration, or chemical exposure, and worn or cracked boots may show up as arc-through, misfires, or hard starting. Diagnose the cause before replacing.
What is this kit made of?
The boots are constructed from high-temperature silicone and reinforced materials designed to resist oil, fuel, and under-hood heat.
Will this fit my vehicle?
It's a direct-fit replacement for a range of GM models such as the Buick LaCrosse, Chevrolet Malibu, GMC Terrain, and Saturn Vue. Check the "Vehicles it fits" section to confirm your exact year and model.
