NGK Direct Ignition Coil Boot

Fits Most Chrysler/Dodge/Jeep 5.7L Hemi (03-05)

Part #: 58918

Overview

The NGK Direct Ignition Coil Boot is engineered to provide a precise OEM fit and exceptional durability for a range of Dodge and Chrysler models from 2002 to 2010. Designed as a critical component in the ignition system, this coil boot ensures reliable spark delivery by protecting the ignition coil and spark plug connection from moisture, dirt, and electrical interference. Ideal for vehicle owners and technicians performing routine maintenance or spark plug replacements, the NGK coil boot helps maintain optimal engine performance and prevents common ignition issues such as flashover.

Built to meet or exceed original equipment specifications, this coil boot is a dependable replacement part that supports consistent ignition timing and engine efficiency. Its compatibility with popular models like the Dodge Ram, Durango, Magnum, and Chrysler 300 makes it a versatile choice for maintaining your vehicle’s ignition system integrity.

Key Features

NGK’s Direct Ignition Coil Boot combines advanced materials and design to deliver superior performance and durability. Key features include:

• Premium silicone construction for enhanced heat resistance and longevity
• Built-in springs to ensure secure electrical contact with the spark plug
• Ferrite resistors integrated to suppress radio frequency interference (RFI) noise
• Precision OEM fit for seamless installation and reliable operation
• Designed to prevent flashover and misfires by maintaining optimal insulation
• Protects sensitive vehicle electronics from ignition system interference
• Meets or exceeds original equipment specifications for quality assurance
• Limited lifetime warranty for lasting confidence and peace of mind

Construction & Design

The NGK Direct Ignition Coil Boot is crafted from high-grade silicone, chosen for its excellent thermal stability and resistance to cracking or degradation under extreme engine conditions. This material ensures the boot maintains flexibility and a tight seal over time, preventing contaminants from compromising the ignition system.

Inside the boot, a robust spring mechanism guarantees consistent electrical contact with the spark plug terminal, minimizing voltage loss and ensuring efficient spark transmission. Additionally, the inclusion of ferrite resistors effectively reduces electromagnetic interference, protecting both the ignition system and the vehicle’s onboard electronics from potential disruptions.

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 Dodge and Chrysler models without requiring any modifications. This makes it an ideal choice for both professional mechanics and DIY enthusiasts looking to maintain or restore ignition system reliability during routine spark plug service.

Ensuring a secure connection between the ignition coil and spark plug, this boot helps maintain consistent engine performance and reduces the risk of ignition-related faults.

What's Included

• One NGK Direct Ignition Coil Boot (Part #58918)

Ideal For

This NGK coil boot is perfect for vehicle owners and technicians servicing 2002–2010 Dodge Ram, 2004–2009 Dodge Durango, 2005–2008 Dodge Magnum, and 2005–2010 Chrysler 300 models. It is especially recommended during spark plug replacement intervals or when addressing ignition misfires and electrical interference issues. Its durable construction and OEM-level fit make it a reliable upgrade or replacement part to maintain optimal ignition system performance.

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.