A-NAFTULY Iridium Spark Plugs 6-Pack LFR5AIX11 — 0.6mm Fine-Wire, Laser-Welded for Nissan/Infiniti 3.5L & 4.0L V6

These premium iridium spark plugs are built with a 0.6 mm fine-wire center electrode and laser-welded construction to deliver precise spark delivery and long service life. They are supplied as a set of six and designed to match factory fitment for many Nissan, Infiniti, Toyota, Hyundai, and Kia V6 models. The lightweight, high-melting-point iridium tip resists wear and helps maintain stable combustion over miles of driving.

Which vehicles will these spark plugs fit?

These A-NAFTULY plugs are compatible with a wide range of V6 engines, primarily Nissan and Infiniti 3.5L applications plus several 4.0L V6 platforms. Fitment covers multiple model years—verify your engine code and plug reference before purchasing.

• Primary fit: 2002–2006 Nissan Altima 3.5L, 2002–2008 Maxima 3.5L, 2003–2007 Murano 3.5L, 2003–2006 350Z 3.5L.
• Also fits: 2005–2019 Frontier 4.0L, 2005–2012 Pathfinder 4.0L, 2004–2009 Quest 3.5L, 2005–2015 Xterra 4.0L, select NV models.
• Infiniti compatibility: G35, FX35, I35, M35, and QX4 years listed in product specs.

How do these iridium plugs improve performance or longevity?

The fine-wire iridium center electrode requires less voltage to fire and sustains sharper, more consistent sparks. That stability supports smoother starts, steadier idling, and extended service intervals compared with standard copper plugs.

• 0.6 mm iridium tip lowers required ignition voltage for reliable firing.
• Laser-welded construction reduces electrode erosion under heat and electrical stress.
• Iridium alloy offers higher melting point and greater wear resistance than platinum or copper.

What should I check before installation?

Confirm the reference number and thread specification match your engine’s factory recommendation to avoid fitment issues. Inspect ignition coils, boot condition, and torque requirements to ensure correct installation and optimal plug life.

• Compare part numbers: 4469, LFR5AIX-11 and listed cross-references in the product details.
• Check thread pitch, seat type, and gap—adjust or verify gap if required per vehicle manual.
• Replace coils or boots if cracked or contaminated to prevent misfires after installation.

What do I get in the box and what support is offered?

The package contains six iridium spark plugs with the stated reference number; A-NAFTULY provides a 12-month limited warranty and customer support if you encounter defects or fitment questions.

• Set of 6 iridium spark plugs, prepped for installation in compatible engines.
• Manufacturer support and a 12-month worry-free warranty through A-NAFTULY.
• Clear cross-reference list included so you can confirm compatibility with OEM numbers.

Who is this for? These spark plugs suit do-it-yourself mechanics and professional technicians maintaining mid-2000s Nissan and Infiniti V6 vehicles, plus owners of certain Toyota, Hyundai, and Kia V6 models who want a durable iridium upgrade. If you need parts that match OEM specifications while offering improved electrode wear resistance and consistent spark performance, this A-NAFTULY 6-pack is a practical, long-lasting replacement option.