Restore dependable spark insulation with the ThunderCore PRO Coil Boot 900-P2004, an OE-replacement coil boot for coil-on-plug (COP) and coil-near-plug (CNP) ignition systems. It drops in as a direct-fit replacement for the 1995-1998 Toyota T100, 1995-2004 Toyota Tacoma, 1996-2002 Toyota 4Runner, and 2000-2004 Toyota Tundra — see the "Vehicles it fits" section for engine-level coverage.
A coil boot forms the insulative path between the ignition coil and the spark plug. Over time, heat, vibration, and chemical exposure can degrade a boot, which can lead to arc-through, misfires, or hard starting. If a failed boot is the cause of those symptoms, this replaces it.
- Restores ignition insulation: replaces a worn or cracked boot to help maintain spark isolation and prevent voltage loss.
- Heat & chemical resistant: constructed 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 for factory ignition coils and spark plugs in coil-on-plug and coil-near-plug systems.
Interchange: 671-6248 · CH-70 · 36-2028
6716248 · CH70 · 362028 · SPP79E
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
671-6248, CH-70, 36-2028, SPP79E
Frequently Asked Questions
What does the 900-P2004 coil boot do?
It forms the insulative path between the ignition coil and the spark plug in coil-on-plug (COP) and coil-near-plug (CNP) systems, providing high-voltage insulation and secure coil-to-plug contact.
Which vehicles does this coil boot fit?
It's a direct-fit replacement for the 1995-1998 Toyota T100, 1995-2004 Toyota Tacoma, 1996-2002 Toyota 4Runner, and 2000-2004 Toyota Tundra. Check the "Vehicles it fits" section to confirm your engine.
What are signs a coil boot may need replacing?
Arc-through, misfires, or hard starting can point to a degraded boot. Diagnose the cause first, since these symptoms can have other sources; if a failed boot is the cause, this replaces it.
What is this coil boot made of?
It's constructed from high-temp silicone and other reinforced, high-temperature materials to resist oil, fuel, and under-hood heat.
What part numbers does this coil boot cross-reference?
It interchanges with 671-6248, CH-70, 36-2028, and SPP79E (also written 6716248, CH70, and 362028).
