Walker Products 900-P2075-4 ThunderCore Ultra Premium Coil on Plug Boot Kit

The Walker Products 900-P2075-4 ThunderCore Ultra is a premium coil-on-plug (COP) boot kit engineered as a direct OE replacement for modern ignition systems. Precision manufactured in an ISO 9001/IATF16949 certified facility, this kit is built to meet or exceed all Original Equipment Manufacturer specifications and test requirements.

Key Features:

• OE-matched dielectric strength — engineered to match factory boot length, terminal geometry, and connector fitment for consistent high-voltage insulation
• Stainless steel springs with integrated resistors designed to suppress radio frequency interference (RFI)
• High-temperature silicone construction — resists oil, fuel, under-hood heat, and chemical exposure for long-lasting durability
• Weatherproof seals that minimize moisture accumulation and protect the ignition circuit
• Maximum voltage delivery — ensures full spark energy reaches the plug for reliable combustion
• Kit includes boots, springs, and insulators for complete cylinder service — ideal for tune-ups and preventative maintenance
• Dielectric grease included for proper installation and seal protection

Coil boots degrade over time due to heat, vibration, and chemical exposure, leading to arc-through, engine misfires, and hard starting. The Walker Products 900-P2075-4 restores critical spark isolation and electrical connection in coil-on-plug and coil-near-plug (CNP) ignition systems, helping recover engine smoothness, reliability, and emissions performance.