Restore dependable spark insulation between the ignition coil and the spark plug with the ThunderCore PRO Coil Boot 900-P2001. This ThunderSpark coil boot drops in as an OE-replacement for the 2001-2005 Mazda Miata — see the Buyer's Guide tab for engine details.
In coil-on-plug (COP) and coil-near-plug (CNP) ignition systems, the coil boot forms the insulative path between the coil and the plug. Over time boots can degrade from heat, vibration, or chemical exposure, which can lead to arc-through, misfires, or hard starting; if a worn or cracked boot is the cause, this replaces it.
Interchange: CC-516 · 671-4281 · 36-2013
CC516 · 6714281 · 362013 · SPP52E
This part cross-references / interchanges with the following part numbers:
What does the coil boot do?
In coil-on-plug and coil-near-plug systems it forms the insulating path between the ignition coil and the spark plug, carrying high voltage to the plug while helping prevent arc-through.
Which vehicles does the 900-P2001 fit?
It's a direct-fit replacement for the 2001-2005 Mazda Miata. Check the Buyer's Guide tab to confirm fitment for your vehicle.
What are the signs a coil boot may need replacing?
Cracked or degraded boots can contribute to misfires, arc-through, or hard starting. Diagnose the cause before replacing, since these symptoms can have other sources.
What is this coil boot made of?
Per the manufacturer, it's constructed from high-temperature silicone and reinforced materials designed to resist oil, fuel, and under-hood heat.
Does this listing include springs and insulators?
This listing is for the coil boot itself. Full coil boot kits add springs and insulators for full-cylinder service, but this item is the boot.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
