Restore reliable spark insulation across every cylinder with the ThunderCore PRO Coil Boot Kit 900-P2083-8 (also written 900P20838). This OE-replacement kit drops into coil-on-plug (COP) and coil-near-plug (CNP) ignition systems, serving as the insulative path between the ignition coil and the spark plug. It fits the 1997-2002 Jaguar XK8, 1998-2003 Jaguar Vanden Plas, 1998-2003 Jaguar XJ8, 1998-2003 Jaguar XJR, and 2000-2002 Jaguar XKR — see the Buyer's Guide tab for engine-level details.
Over time, coil boots degrade from heat, vibration, or chemical exposure, which can lead to arc-through, misfires, or hard starting. If worn boots are the cause, this kit replaces them to help restore ignition reliability and engine smoothness.
Interchange: 148024 · 903S
This part cross-references / interchanges with the following part numbers:
What does this coil boot kit do?
It supplies the insulative boots between the ignition coils and spark plugs in coil-on-plug or coil-near-plug systems, providing high-voltage insulation and secure coil-to-plug contact.
What comes in the kit?
The kit includes the boots, springs, and insulators needed for full-cylinder service, making it suitable for ignition tune-ups, repairs, or preventative maintenance.
Will this fit my Jaguar?
It's cataloged for the 1997-2002 XK8, 1998-2003 Vanden Plas, 1998-2003 XJ8, 1998-2003 XJR, and 2000-2002 XKR. Check the Buyer's Guide tab to confirm your specific vehicle.
What are signs the coil boots may need replacing?
Boots that have degraded from heat, vibration, or chemicals can cause arc-through, misfires, or hard starting. Diagnose the cause before replacing, as other parts can produce these symptoms.
What material are the boots made from?
They are constructed from high-temperature silicone and reinforced materials designed to resist oil, fuel, and under-hood heat.
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.
