UF549 Ignition Coil Pack and Iridium Spark Plugs Set - Reliable

In this review the UF549 ignition coil pack paired with four iridium spark plugs is assessed as a direct replacement kit for a range of Nissan and INFINITI L4 engines. It is best for DIY mechanics and service technicians who need a matched ignition coil and spark plug set to address misfires, rough idle, or hard starting. The single biggest reason to buy is the matched pairing: new coils with iridium plugs reduce the chance of spark plug fouling and restore ignition reliability when original parts show wear.

Key Features

• Complete kit: Includes 4 ignition coils and 4 iridium spark plugs so all cylinders receive matching new ignition components at once, lowering the risk of uneven performance.
• Extensive fitment: Designed to fit many Nissan Sentra, Altima, Versa, Rogue, Cube, Urvan and Pathfinder models plus INFINITI QX60 hybrids, making it suitable for common L4 engines from 2007 to 2015.
• Improved durability: Coils use 100% pure copper windings and thermoplastic housings to resist heat stress and improve long term reliability under engine load.
• High insulation: Silicone rubber boots provide superior heat resistance and insulation to help prevent misfires caused by degraded boots or arcing.
• Iridium plugs included: Iridium tips are more resistant to fouling and maintain a stable spark over time, which can improve fuel economy and starting consistency.
• Warranty and support: The kit is backed by an 18 month worry-free warranty and customer service for replacement or troubleshooting.

Who It's For

This kit is aimed at owners of Nissan and INFINITI vehicles listed in the fitment who prefer to replace coils and spark plugs together to avoid intermittent misfires and uneven cylinder performance. It is useful for independent shops and experienced DIYers who can verify fitment using the vehicle selector before purchase.

Those who should look elsewhere include owners of vehicles not listed in the detailed fitment interface or drivers who want OEM-branded parts from the original vehicle manufacturer; also, customers expecting performance tuning gains beyond restoring factory ignition reliability should consider performance-specific ignition components instead.

Pros & Cons

Pros

• Complete 4-coil and 4-plug set simplifies service and reduces mismatch risk.
• Good build quality with copper windings and heat-resistant materials for durability.
• Iridium plugs offer longer life and resistance to fouling compared with basic plugs.

Cons

• Fitment display may be limited in the interface, so buyers must confirm vehicle compatibility before ordering.
• Customer reports on performance are mixed; a small number experienced no-start conditions, so proper installation and diagnostics are essential.

Specifications

Product type	Ignition coil pack and iridium spark plug kit
Includes	4 ignition coils, 4 iridium spark plugs
Compatible engines	1.6L, 1.8L, 2.0L, 2.5L L4 (selected models)
Fitment years	2007-2015 (select Nissan models), 2014-2015 (INFINITI QX60 Hybrid)
Replaces part numbers	22448ED000, 22448JA00A, 224481KT1A and related numbers
Warranty	18 months for coil pack kit; 1 year noted for plugs

Our Verdict

The UF549 coil and iridium plug kit is a practical, cost-effective option for drivers looking to restore proper ignition on compatible Nissan and INFINITI L4 engines. It offers durable materials, matched components, and a helpful warranty, making it a sensible value buy for routine maintenance or troubleshooting misfires, provided fitment is carefully confirmed before installation.

Frequently Asked Questions

Will this kit fit my vehicle?
Confirm fitment using the vehicle selector; the kit targets many Nissan Sentra, Altima, Versa, Rogue, Cube, NV200, Pathfinder and INFINITI QX60 models from 2007 to 2015.

Should coils and plugs be changed together?
Yes, replacing coils and spark plugs together reduces the chance of rough idle, misfires, poor fuel economy and starting issues.

What if a part fails after installation?
The kit includes an 18 month warranty and customer service support; contact the seller if you experience product quality issues.