NGK Direct Ignition Coil Boot

Chrysler 300 / Dodge Magnum 05 3.5L/2.7L

Part #: 58906

Overview

The NGK Direct Ignition Coil Boot is a premium replacement part designed specifically for select Chrysler and Dodge models from 2005 to 2010. Engineered to deliver reliable ignition performance, this coil boot ensures a secure connection between the ignition coil and spark plug, maintaining optimal spark delivery for efficient engine operation. Ideal for vehicle owners and technicians performing routine maintenance or spark plug replacements, the NGK coil boot helps prevent ignition misfires and electronic interference that can compromise engine performance.

Built to meet or exceed original equipment standards, this coil boot offers a durable and precise fit, making it a trusted choice for maintaining the ignition system’s integrity and reliability over time.

Key Features

NGK’s Direct Ignition Coil Boot combines advanced materials and thoughtful engineering to provide dependable ignition system protection and performance. Key features include:

• OEM-level fitment for 2005–2010 Chrysler 300 and 2005–2008 Dodge Magnum models
• Constructed from high-quality silicone for excellent heat resistance and durability
• Internal springs ensure consistent electrical contact and spark delivery
• Ferrite resistors integrated to suppress electromagnetic interference (EMI) and radio frequency interference (RFI)
• Designed to prevent flashover and misfires, enhancing engine efficiency
• Tested to meet or exceed original equipment specifications for reliable performance
• Helps protect sensitive vehicle electronics from ignition noise
• Backed by NGK’s limited lifetime warranty for long-term peace of mind

Construction & Design

The NGK Direct Ignition Coil Boot is crafted from premium-grade silicone, chosen for its superior resistance to heat, oil, and chemical exposure commonly found in engine compartments. This material ensures the boot maintains flexibility and durability even under extreme operating conditions. The internal spring mechanism guarantees a secure and stable connection between the ignition coil and spark plug, minimizing electrical resistance and ensuring consistent spark energy transfer.

Additionally, the built-in ferrite resistor plays a critical role in reducing electromagnetic and radio frequency interference, which can disrupt vehicle electronics and cause ignition system malfunctions. The precise engineering and quality materials used in this coil boot contribute to its long service life and dependable performance.

Installation & Fitment

Installation of the NGK Direct Ignition Coil Boot is straightforward and designed to be a direct replacement for the original part. It fits perfectly on the ignition coils of the specified Chrysler 300 and Dodge Magnum models without requiring any modifications. This makes it an excellent choice for DIY enthusiasts and professional mechanics alike. Replacing the coil boot during spark plug service intervals helps maintain optimal ignition system function and prevents common issues such as misfires and poor engine performance.

What's Included

• One NGK Direct Ignition Coil Boot (Part #58906)
• Internal spring and ferrite resistor pre-installed

Ideal For

This NGK coil boot is ideal for vehicle owners, mechanics, and automotive enthusiasts who want to maintain or restore the ignition system performance of their 2005–2010 Chrysler 300 or 2005–2008 Dodge Magnum. It is particularly recommended during spark plug replacement intervals or when addressing ignition-related issues such as misfires, rough idling, or electronic interference. Its durable construction and OEM-level fit make it a reliable upgrade or replacement part to ensure consistent engine operation and longevity.

NGK is one of the most trusted names in ignition, supplying spark plugs, coils, and related ignition/sensor components used across both OEM and aftermarket applications. For performance enthusiasts, NGK’s plug technology and broad coverage make it a reliable baseline upgrade for consistent spark, cleaner burn, and dependable operation under heat and boost.