Restore critical spark isolation and secure coil-to-plug contact with the ThunderCore PRO ThunderSpark Coil Boot 900-P2079. In coil-on-plug (COP) and coil-near-plug (CNP) systems, the coil boot forms the insulative path between the ignition coil and the spark plug, and it drops in as a direct-fit replacement for the 2013-2015 Ford C-MAX, 2009-2015 Ford Escape, 2012-2014 Ford Focus, 2010-2015 Ford Fusion, 2013-2017 Ford Ranger, 2011-2014 Lincoln MKZ, 2009-2011 Mazda Tribute, 2009-2011 Mercury Mariner, and 2010-2011 Mercury Milan. See the Buyer's Guide tab for engine-level details.
Over time, coil boots can degrade from heat, vibration, and chemical exposure, which may lead to arc-through, misfires, or hard starting. If a cracked or worn boot is the cause, replacing it helps restore high-voltage insulation and ignition reliability. This listing is for the coil boot.
Interchange: 671-4312 · 36-2111 · 36-2117
6714312 · 362111 · 362117 · SPP165E
This part cross-references / interchanges with the following part numbers:
What does this coil boot do?
It forms 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 the 900-P2079 fit?
It's a direct-fit replacement for applications like the 2009-2015 Ford Escape, 2010-2015 Ford Fusion, 2013-2017 Ford Ranger, and 2011-2014 Lincoln MKZ. See the Buyer's Guide tab for the full list.
What are signs a coil boot may need replacing?
Arc-through, misfires, or hard starting can show up as boots degrade from heat, vibration, or chemical exposure. Diagnose the cause before replacing, since these symptoms can have other sources.
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, matching OE dielectric strength and boot length.
Does this listing include springs and insulators?
This listing is for the coil boot. Coil boot kits include boots, springs, and insulators for full-cylinder service, but that kit content is separate from this single-boot listing.
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.
