ThunderCore PRO Coil Boot Kit 900-P2011-4

ThunderCore PRO Coil Boot Kit P/N:900-P2011-4

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$28.99

MPN: 900-P2011-4

UPC: 724620113246

Item Package Quantity: 1

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ThunderCore PRO Coil Boot Kit P/N:900-P2011-4

$28.99

Description

Keep high-voltage spark flowing cleanly from coil to plug with the ThunderCore PRO Coil Boot Kit 900-P2011-4. It drops in as a direct-fit replacement for the 1997-2000 Audi A4 Quattro and the 1998-1999 Volkswagen Passat — see the Buyer's Guide tab for engine-level fitment.

Restores Ignition Insulation: replaces worn or cracked boots to help maintain proper spark isolation and prevent voltage loss.
Complete Kit Coverage: includes the boots, springs, and insulators needed for full-cylinder replacement — ideal for ignition tune-ups and repairs.
OE Replacement Quality: engineered to match OE dielectric strength, boot length, and connector geometry.
Heat & Chemical Resistant: built from high-temperature silicone and reinforced materials to resist oil, fuel, and under-hood heat.

In coil-on-plug (COP) or coil-near-plug (CNP) ignition systems, the coil boot forms the insulative path between the ignition coil and the spark plug. Over time, heat, vibration, and chemical exposure can degrade a boot, which can lead to arc-through, misfires, or hard starting. If a failed coil boot is the cause of your ignition trouble, this kit replaces the worn boots and their springs and insulators to help restore secure coil-to-plug contact.

Interchange: 144058

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

This part cross-references / interchanges with the following part numbers:

144058

Frequently Asked Questions

What does the ThunderCore PRO 900-P2011-4 coil boot kit do?

It replaces the coil boots that form the insulative path between the ignition coil and spark plug in coil-on-plug (COP) or coil-near-plug (CNP) systems, helping maintain proper high-voltage insulation and secure coil-to-plug contact.

Which vehicles does this kit fit?

It's a direct-fit replacement for the 1997-2000 Audi A4 Quattro and the 1998-1999 Volkswagen Passat. Check the Buyer's Guide tab for engine-level fitment before ordering.

What's included in the kit?

The kit includes the boots, springs, and insulators needed for full-cylinder replacement, making it suitable for ignition tune-ups, repairs, or preventative maintenance.

What are signs a coil boot may need replacing?

Boots can degrade from heat, vibration, or chemical exposure, which may lead to arc-through, misfires, or hard starting. Diagnose the cause before replacing, since these symptoms can have other sources.

What are the boots made of?

They're constructed from high-temperature silicone and reinforced materials designed to resist oil, fuel, and under-hood heat while providing dielectric insulation.