Restore proper spark insulation and a secure coil-to-plug connection with the ThunderCore PRO Coil Boot Kit 900-P2037-4. This OE-replacement kit is designed for coil-on-plug (COP) and coil-near-plug (CNP) ignition systems and is a direct-fit replacement for many GM applications, including the 2001-2002 Chevrolet Astra, 2002-2005 Chevrolet Cavalier, 2002-2007 Saturn Vue, 2004-2005 Chevrolet Classic, 2004-2006 Chevrolet Malibu, 2005-2006 Chevrolet Cobalt, 2006 Chevrolet HHR, 2006 Pontiac G4, 2006 Pontiac Pursuit, and 2006 Saturn Ion — see the Buyer's Guide tab for engine details.
In COP and CNP setups the coil boot serves as the insulative path between the ignition coil and the spark plug. Over time boots can degrade from heat, vibration, or chemical exposure, which may lead to arc-through, misfires, or hard starting. If a worn or cracked boot is the cause, this kit replaces it.
- Restores ignition insulation: replaces worn or cracked boots to help maintain spark isolation and limit voltage loss.
- Heat & chemical resistant: constructed from high-temperature silicone and reinforced materials to resist oil, fuel, and under-hood heat.
- Complete kit coverage: includes boots, springs, and insulators for full-cylinder service — ideal for ignition tune-ups or preventative maintenance.
- OE-replacement quality: engineered to match OE dielectric strength, boot length, and connector geometry.
Interchange: 114031 · CPBK130 · 948S
