Keep every cylinder firing cleanly with the ThunderCore PRO Coil Boot Kit (P/N 900-P2020-5, also written 900P20205). In coil-on-plug (COP) and coil-near-plug (CNP) systems, coil boots form the insulative path between the ignition coil and the spark plug, and this OE-replacement kit drops in as a direct-fit replacement for the 2006 Volvo C70, 2004-2006 Volvo S40, 2005-2006 Volvo S60, 2005-2006 Volvo V50, 2005-2007 Volvo V70, and 2005-2007 Volvo XC70. See the "Vehicles it fits" section for engine specifics.
Over time boots degrade from heat, vibration, and chemical exposure, which can lead to arc-through, misfires, or hard starting. If worn boots are the cause of those symptoms, this kit replaces them to help restore proper spark isolation and secure coil-to-plug contact.
- Restores ignition insulation: Replaces worn or cracked boots to help ensure proper spark isolation and prevent voltage loss.
- OE-replacement quality: Engineered to match OE dielectric strength, boot length, and connector geometry.
- Complete kit coverage: Includes boots, springs, and insulators for full-cylinder service — ideal for tune-ups and preventative maintenance.
- Heat & chemical resistant: Constructed from high-temp silicone and reinforced materials to resist oil, fuel, and under-hood heat.
Interchange: 145009
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What vehicles does this coil boot kit fit?
It's a direct-fit replacement for the 2006 Volvo C70, 2004-2006 S40, 2005-2006 S60 and V50, and 2005-2007 V70 and XC70. See the "Vehicles it fits" section for engine specifics.
What's included in the kit?
The kit includes boots, springs, and insulators for full-cylinder service, making it suitable for ignition tune-ups or preventative maintenance.
What are signs my coil boots may need replacing?
Cracked or degraded boots can allow arc-through, misfires, or hard starting. Diagnose the cause first, since these symptoms can have other sources.
What are the boots made of?
They're constructed from high-temperature silicone and reinforced materials to resist oil, fuel, and under-hood heat.
What is a coil boot?
In coil-on-plug (COP) or coil-near-plug (CNP) systems, the coil boot is the insulative path between the ignition coil and the spark plug, providing high-voltage insulation.
