Restore proper spark insulation and secure coil-to-plug contact with the ThunderCore PRO ThunderSpark Coil Boot Kit 900-P2069-4. This OE-replacement kit drops in for the 2006-2009 Ford Fusion, 2006-2013 Mazda 3, 2006-2014 Mazda 6, 2007-2012 Mazda CX-7, 2006-2008 Mazda MX-5, 2006-2013 Mazda MX-5 Miata, and 2006-2009 Mercury Milan. See the Buyer's Guide tab for engine-level fitment.
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. Over time boots degrade from heat, vibration, and chemical exposure, which can lead to arc-through, misfires, or hard starting. If worn or cracked boots are the cause, this kit replaces them to restore spark isolation.
- OE-replacement fit: engineered to match OE dielectric strength, boot length, and connector geometry.
- Heat & chemical resistant: constructed from high-temp silicone and reinforced materials to resist oil, fuel, and under-hood heat.
- Complete kit coverage: includes the boots, springs, and insulators needed for full-cylinder service.
- Tune-up ready: ideal for ignition tune-ups or preventative maintenance, whether servicing one cylinder or a full set.
Interchange: 124019 · 929S
