Marsram Ignition Coil Pack UF550 6-Pack with Iridium Spark Plugs for Nissan Maxima 2009–2014 3.5L V6

This complete six-pack replaces worn or failing coils and spark plugs so your V6 fires consistently across all cylinders. Each coil uses heat-resistant housing and high-conductivity copper windings, while the spark plugs use double-iridium electrodes for a stable, long-lasting spark. The set ships as six coils and six plugs and fits a wide range of Nissan and Infiniti applications—verify fitment for your VIN or model year before ordering.

How will these coils and plugs affect starting and throttle response?

Replacing degraded ignition coils and plugs restores a full, reliable spark to each cylinder, which improves cold starts and throttle pickup. You should notice reduced misfires and smoother acceleration once the new parts are installed.

• Double-iridium spark plugs provide stable spark retention and resist gap growth over time.
• High-conductivity copper coils accelerate ignition speed for quicker combustion.
• Full six-pack replacement ensures uniform performance across all cylinders.

Will this kit fit my Nissan or Infiniti model?

The Marsram UF550 kit is designed to replace a variety of OE coil and plug part numbers used across many 3.5L V6 Nissan and Infiniti vehicles. Confirm vehicle compatibility in your fitment tool or by cross-referencing the listed replacement numbers.

• Covers many Infiniti EX, FX, G, JX/QX, M/Q50/Q70 models listed for 2007–2019 ranges.
• Covers Nissan 350Z, Altima, Maxima, Murano, Pathfinder, Quest models across multiple years.
• Replaces part numbers like UF550, 22448-JA10C, 22448-JA11C and OE spark plug 1406.

What are the construction and durability highlights?

Each coil body uses high-strength engineering plastic and epoxy resin to resist heat and engine bay stresses, while internal copper windings provide consistent electrical transfer. The iridium-tipped plugs offer corrosion resistance and maintain the spark gap for extended service life.

• Epoxy resin and reinforced plastic exterior prevents melting and heat damage.
• Copper coil cores increase conductivity and ignition speed.
• Double iridium electrodes reduce electrode wear and sustain combustion efficiency.

How easy is installation and what support is included?

The kit is built to meet or exceed original-equipment specifications so installation follows the same steps as factory parts. Minimal tools are required for coil and plug swaps; technicians and experienced DIYers can complete the job with common sockets and torque wrench.

• Direct-fit design matches OE dimensions and mounting points for straightforward replacement.
• Includes six coils and six spark plugs for a complete cylinder bank service.
• Marsram provides a 1-year aftermarket warranty and customer support for fitment or product issues.

Who is this for? This Marsram coil-and-plug kit suits owners and technicians maintaining Nissan or Infiniti vehicles with the 3.5L V6 who want a full-bank replacement to eliminate misfires, rough idle, or inconsistent starts. It’s ideal for model years and trims listed in the product fitment—confirm compatibility before purchasing to ensure a correct match for your vehicle.