NGK Ultra-Low Resistance Spark Plug Wire Set

Chrysler 300C / Dodge Magnum / Jeep Grand Cherokee 05 5.7L

Part #: 53140

Overview

The NGK Ultra-Low Resistance Spark Plug Wire Set is engineered to deliver reliable ignition performance for your Chrysler 300 (2005–2010) and Dodge Magnum (2005–2008). Designed for enthusiasts and professional mechanics alike, this wire set ensures consistent spark delivery, improved engine efficiency, and enhanced durability under demanding conditions. Whether you're replacing worn wires or upgrading your ignition system, NGK’s ultra-low resistance technology provides a noticeable improvement in ignition reliability and noise suppression.

Built to meet or exceed original equipment specifications, this set offers a direct fit with OE-quality boots and terminals, ensuring a secure connection and long-lasting service life. The wires are designed to withstand high temperatures and harsh engine environments, making them an excellent choice for maintaining optimal engine performance.

Key Features

NGK’s Ultra-Low Resistance Spark Plug Wire Set incorporates advanced materials and design elements to maximize ignition efficiency and durability:

• Ultra-low resistance mag core wire for superior spark energy transfer
• High-temperature silicone jacket protects against heat, oil, and abrasion
• EPDM and silicone insulation provide excellent dielectric strength and durability
• Stainless steel winding over a ferrite magnetic core enhances spark power and suppresses EMI/RFI noise
• OE-quality boots and terminals ensure a precise, secure fit and reliable electrical connection
• Complete set includes 8 wires, designed for applications where a coil lead wire is not required
• Backed by a limited lifetime warranty for confidence and peace of mind

Construction & Design

The NGK spark plug wires are constructed with a multi-layer design that balances electrical performance and durability. At the core, a ferrite magnetic core wrapped in stainless steel winding minimizes electrical resistance and suppresses electromagnetic interference, which can disrupt sensitive vehicle electronics. Surrounding this core is a robust EPDM and silicone insulation layer that resists heat, chemicals, and mechanical wear.

The outer jacket is made from high-temperature silicone, providing excellent flexibility and protection against engine heat and environmental factors. The boots and terminals are manufactured to OE standards, ensuring a tight seal and corrosion resistance for long-term reliability.

Installation & Fitment

This NGK wire set is designed for direct replacement on 2005–2010 Chrysler 300 and 2005–2008 Dodge Magnum models, requiring no modifications for installation. The wires are pre-cut to the correct lengths for each cylinder, and the OE-style boots fit securely over the spark plugs and ignition coil terminals. Installation is straightforward and can be completed with basic hand tools, making it suitable for both professional technicians and experienced DIY enthusiasts.

What's Included

• 8 Ultra-Low Resistance Spark Plug Wires
• OE-quality boots and terminals pre-installed
• Limited lifetime warranty documentation

Ideal For

This spark plug wire set is ideal for Chrysler 300 and Dodge Magnum owners seeking to restore or enhance ignition system performance. It is well-suited for daily drivers, performance enthusiasts, and anyone requiring a reliable, durable ignition wire set that reduces electrical interference and maintains consistent spark delivery under all driving conditions.

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.