X4XZ UF349 Ignition Coil & 224018H515 Double Iridium Spark Plugs for Nissan & Infiniti V6

Overview

The X4XZ UF349 ignition coil and 224018H515 double iridium spark plug kit offers a comprehensive replacement designed for a broad range of Nissan and Infiniti V6 engines. This bundle brings six robust ignition coils together with six double iridium plugs, paired to support reliable starts and smooth operation across model years from the early 2000s to the mid-2010s.

Compatibility you can check

Designed to align with OE references UF349 and 224018H515, this kit suits many Nissan/Infiniti models, including Altima, Maxima, Murano, Quest, Pathfinder, Frontier, XTERRA, QX4, L35, and Suzuki Equator V6. The accompanying images highlight vehicle notes for quick reference when shopping.

What’s included

• Six ignition coil packs
• Six double iridium spark plugs
• OE references UF349 and 224018H515 for easy cross-checking
• Note: instruction manual is not included

Potential benefits you might experience

• Broad vehicle compatibility across multiple Nissan and Infiniti V6 models
• Possible smoother engine idle and steadier response during starts
• A spark plug design with extended life potential, thanks to double iridium electrodes
• High-quality ignition coil construction with a stainless-steel spring and noise suppressor to minimize interference
• Thermoplastic coil connector crafted to resist heat and vibrations for reliable connections

Design, durability, and installation

The spark plugs use double iridium for enduring performance, while the ignition coils are built to efficiently transfer high voltage from the ignition system to the plugs. These details are meant to help maintain spark integrity under heat and vibration across service intervals. The kit is designed for straightforward installation and is intended to match or improve on the OE design where applicable. While a manual isn’t included, the parts are sized for a user-friendly swap for many DIY enthusiasts and professionals, especially when confirming compatibility with the listed OE references.

Warranty and support

X4XZ provides 24-hour customer service and a 1-year product service policy, so you can reach out with installation questions or product concerns anytime.