NGK Coil on Plug Boots are built to stringent OEM tolerances, combining original equipment fit, design and outstanding durability. NGK Coil on Plug Boots are manufactured using only premium silicone and always include any required internal springs and ferrite resistors for superior performance and RFI noise suppression. Bridging the important link between ignition coil and spark plug, COP boots should always be replaced with NGK Coil on Plug Boots at the time as changing spark plugs to prevent ignition problems such as flashover. NGK Coil on Plug Boots provide original equipment design and fit, outstanding durability, and excellent suppression of EMI/RFI to protect all vehicle electronic components. Tested to meet or exceed OE specifications.

LIMITED LIFETIME WARRANTY: See package for details

The NGK Part 58939 Coil on Plug Boot is an essential component designed to ensure reliable ignition performance for Ford Focus and Escape models from 2003 to 2008. Crafted with precision to meet original equipment manufacturer (OEM) standards, this boot guarantees a perfect fit and optimal durability. Constructed from premium silicone, it offers excellent resistance to heat, chemicals, and wear, ensuring long-lasting performance in demanding engine environments. The inclusion of internal springs and ferrite resistors enhances RFI noise suppression, effectively reducing electromagnetic interference that can disrupt vehicle electronic systems. This design helps maintain clean ignition signals and prevents issues such as misfires and flashover, which can compromise engine efficiency and vehicle reliability. Replacing the coil on plug boots when changing spark plugs is recommended to prevent ignition problems and ensure consistent engine performance. The NGK Coil on Plug Boot is tested to meet or exceed OE specifications, providing peace of mind with a product built for durability and superior electrical performance. It is backed by a limited lifetime warranty, underscoring NGK’s commitment to quality. This part is suitable for a range of Ford Focus and Escape models within the specified years, making it a vital replacement part for maintaining optimal ignition system function and vehicle reliability. Designed with precision and engineered for excellence, the NGK Coil on Plug Boot offers an OEM-like fit, outstanding durability, and effective EMI/RFI suppression, ensuring your vehicle's ignition system remains efficient and dependable.

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