Ignition Coil UF401 & Iridium Spark Plugs NGK4469 Set of 6 - Reliable

In this review the BDFHYK set of 6 ignition coils UF401 and NGK4469 iridium spark plugs is evaluated for drivers of V6 Nissan and INFINITI models who need a direct replacement kit. The bottom line: this kit is for owners who want an affordable, OEM-style swap to restore starting, idle smoothness and throttle response. It delivers clear fit and installation advantages on compatible INFINITI G35, I35, M35, QX4 and Nissan 350Z, Altima and Frontier engines, while offering a 12 month warranty and lifetime after-sales support.

Key Features

• Direct compatibility: Designed to match OE references like 22448-AL61 and UF401 so replacement is straightforward for listed INFINITI and Nissan V6 models.
• Ignition coil construction: Coil packs use silicon steel, Japan-imported rubber and Germany-imported varnished wire to improve durability and electrical performance.
• Iridium spark plugs: NGK4469 iridium electrodes and a high-tech ceramic body aim to deliver quicker starts and more consistent acceleration after installation.
• Complete pack: The six-piece kit includes matching coils and spark plugs so users replace all cylinders at once for balanced performance.
• Warranty and support: The product includes a 12 month warranty and lifetime after-sales service to address fit or quality questions.

Who It's For

This kit is best for do-it-yourself mechanics and independent shops working on 3.5L and 4.0L V6 engines in INFINITI G35, I35, M35, QX4 and Nissan 350Z, Altima, Frontier, Maxima, Pathfinder and similar models that match the listed OE numbers. It suits owners who prefer replacing all ignition coils and plugs at once to restore engine smoothness and fuel efficiency.

Drivers who require factory-authorized parts or who cannot confirm OE compatibility from the vehicle VIN should look elsewhere; OE checking is recommended before purchase. Those seeking premium branded performance coils beyond factory-equivalent spec may also prefer higher-end aftermarket options.

Pros & Cons

Pros

• Good fit and easy installation reported by multiple customers when matched to OE numbers.
• Iridium plugs aim to improve starting and throttle response over worn originals.
• Coils are built using higher-grade materials intended to extend service life compared with cheaper alternatives.
• Includes a 12 month warranty and ongoing after-sales support from the manufacturer.

Cons

• Durability reports are mixed; some users reported early failures so buyers should verify OE compatibility and inspect after installation.
• Not a branded OEM part, so those wanting factory packaging or dealer-sourced parts may prefer an alternative.

Specifications

Kit contents	6 ignition coils UF401 and 6 NGK4469 iridium spark plugs
Compatible engines	3.5L and 4.0L V6 (select INFINITI and Nissan models)
OE references	22448-AL61, 22448-AL615, UF401, C1439 and related codes
Coil materials	Silicon steel, Japan-imported rubber, Germany-imported varnished wire
Spark plug type	Iridium electrode with high-tech ceramic
Warranty	12 months plus lifetime after-sales service

Our Verdict

The BDFHYK UF401 and NGK4469 set of 6 is a practical, value-oriented replacement for owners of compatible INFINITI and Nissan V6 vehicles who need to refresh coils and plugs together. It provides OEM-referenced fit, improved starting from iridium plugs and a useful warranty, but prospective buyers should confirm OE compatibility and accept that durability has mixed customer feedback.

Frequently Asked Questions

Will these coils and plugs fit my vehicle?
Check the listed OE references and model fitment for your vehicle before buying; OE checking is necessary to ensure compatibility.

Do the spark plugs use iridium?
Yes, the included spark plugs use an iridium electrode and a high-tech ceramic body for better starting and performance.

What warranty is provided?
A 12 month warranty is included, and the manufacturer offers lifetime after-sales service for ongoing support.