Keep high-voltage current traveling cleanly from the ignition coil to the spark plug with the ThunderCore PRO ThunderSpark Coil Boot 900-P2046. In coil-on-plug (COP) and coil-near-plug (CNP) systems, the coil boot serves as the insulative path between the coil and the plug, and this one drops in as an OE-replacement for the 2001-2006 Hyundai Santa Fe, 1999-2005 Hyundai Sonata, 2001-2006 Kia Magentis, and 2001-2006 Kia Optima — see the "Vehicles it fits" section for engine-level fitment.
- Restores ignition insulation: Replaces a worn or cracked boot to maintain proper spark isolation and help limit voltage loss.
- Heat & chemical resistant: Built from high-temp silicone and reinforced materials to resist oil, fuel, and under-hood heat.
- OE-replacement quality: Engineered to match OE dielectric strength, boot length, and connector geometry.
- COP/CNP fit: Designed to fit factory ignition coils and spark plugs in coil-on-plug and coil-near-plug systems.
Over time, coil boots degrade from heat, vibration, and chemical exposure, which can lead to arc-through, misfires, or hard starting. If a failed coil boot is the cause of those symptoms, replacing it helps restore reliable high-voltage insulation and secure coil-to-plug contact. Diagnose the underlying cause before replacing.
Interchange: 671-4294 · 36-2041 · 36-2053
6714294 · 362041 · 362053 · SPP63E
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
671-4294, 36-2041, 36-2053, SPP63E
Frequently Asked Questions
What does this coil boot do?
It serves as the insulative path between the ignition coil and the spark plug in coil-on-plug and coil-near-plug systems, providing high-voltage insulation and secure coil-to-plug contact.
Which vehicles does 900-P2046 fit?
It's a direct-fit replacement for the 2001-2006 Hyundai Santa Fe, 1999-2005 Hyundai Sonata, 2001-2006 Kia Magentis, and 2001-2006 Kia Optima. Check the "Vehicles it fits" section for engine-level fitment.
What are signs a coil boot may need replacing?
Cracked or degraded boots can arc-through and may show up as misfires, rough running, or hard starting. Diagnose the underlying cause before replacing.
What is this coil boot made of?
It's constructed from high-temp silicone and reinforced materials designed to resist oil, fuel, and under-hood heat.
What numbers does it interchange with?
It cross-references 671-4294, 36-2041, 36-2053, and SPP63E (also written 6714294, 362041, and 362053).
