Marsram Ignition Coil Pack & Spark Plug Kit — UF550 6-Coil/6-Plug for Nissan 3.5L V6, OE Fit

Marsram's kit pairs six UF550-compatible ignition coils with six double-iridium spark plugs engineered to restore reliable spark for Nissan 3.5L V6 engines.

If your Maxima, Altima, Murano, Pathfinder or select Infiniti models with a 3.5L V6 are showing rough idling, misfires, or reduced throttle response, replacing worn coils and plugs often brings drivability back without other repairs. This complete 6-coil/6-plug set is built to match OE fitment for many 2007–2019 Nissan/Infiniti applications and ships ready for bolt-in replacement.

Which vehicles will this Marsram ignition kit fit?

This kit is compatible with a wide range of Nissan and Infiniti models that use the UF550-style coil and the listed 3.5L V6 spark plug size. Verify compatibility using your vehicle year, model and engine; the package replaces several OEM part numbers commonly found on these engines.

• Common Nissan fits: Maxima (2009–2019 variants), Altima (2007–2018 3.5L trims), 350Z (2007–2009), Murano, Pathfinder, Quest.
• Common Infiniti fits: EX35, FX35, G25/G35, JX35, M35/M35h, Q50/Q70/QX60 hybrid and non-hybrid models listed by year.
• Replaces part numbers such as UF550, 22448-JA10C, 22448-JA11C and associated spark plug 1406—always confirm fit before ordering.

How are these ignition coils and spark plugs constructed?

Marsram coils use a durable outer shell and high-conductivity copper windings to resist heat and deliver a fast, consistent spark. The included plugs feature a double-iridium construction intended to reduce electrode wear and keep the gap stable for longer life.

• Coil housings: epoxy resin and reinforced engineering plastic for heat resistance.
• Coil internals: copper windings to improve ignition responsiveness.
• Spark plugs: double iridium center and ground electrodes for sustained spark efficiency.

What performance or maintenance benefits can I expect after installation?

Replacing failing coils and aged spark plugs typically improves starting, smooths idle, reduces misfire codes, and restores throttle responsiveness. While outcomes depend on your vehicle's overall condition, a matched coil-and-plug set addresses two common ignition-system wear points at once.

• Helps reduce misfires and rough idling when ignition parts are the root cause.
• Supports more complete combustion through consistent spark delivery.
• May improve throttle response and overall engine smoothness versus worn components.

Is installation straightforward and what warranty is included?

These components are manufactured to meet or exceed original equipment dimensions and should install with standard hand tools; basic mechanical experience is recommended. Marsram backs the kit with a one-year aftermarket warranty and customer support for fitment or defect questions.

• Direct bolt-in replacement for compatible models—no modification required.
• Includes 6 ignition coils and 6 spark plugs for full-bank replacement.
• One-year limited warranty and customer service for post-purchase issues.

Who is this for: This Marsram UF550 ignition coil and double-iridium spark plug kit is aimed at DIYers, independent mechanics and fleet maintainers who own or service Nissan/Infiniti vehicles with the 3.5L V6 that require a full-bank ignition refresh. It suits anyone wanting to replace an entire cylinder bank at once to eliminate intermittent misfires or aged ignition parts as the source of drivability concerns. Always confirm part compatibility with your vehicle's year, model and engine code before purchase.