Marsram Ignition Coil and Double-Iridium Spark Plug Kit for Nissan Altima 2.5L (UF549) — Heat-Resistant, Copper-Wound

Marsram UF549 ignition coil and double-iridium spark plug kit restores reliable ignition for select Nissan and Infiniti engines. This ignition kit combines a durable UF549-style coil and high-performance double-iridium spark plugs engineered to deliver consistent sparks, stronger combustion, and durable operation across compatible Nissan and Infiniti models. Built with heat-resistant housing, copper windings, and corrosion-resistant electrode materials, the components are designed to withstand repeated thermal cycling while helping maintain starting reliability and throttle response when the factory parts begin to age.

Which vehicles will these coils and plugs fit?

The kit is tailored for a broad set of Nissan and several Infiniti models across mid-late 2000s and 2010s production years. Confirm fitment against your exact engine code and year before purchasing to ensure compatibility.

• Common Nissan fits: 2007–2015 Altima 2.5L L4, multiple Sentra, Versa, Rogue Select, Cube and NV200 engine variants.
• Selected Infiniti fits: 2009–2019 models including FX50, M56, Q70, Q70L, QX70 and some QX60 variants.
• Cross-reference replacement numbers like UF-549, 22448EN200, GN10241 when verifying fit.

How do these parts improve engine ignition performance?

The coil uses high-conductivity copper windings and heat-resistant housing to maintain rapid, consistent energy transfer to the spark plug. The double-iridium plugs provide a stable spark and resist electrode wear for a longer effective service life, which helps sustain combustion efficiency as mileage increases.

• Copper windings increase ignition speed and energy transfer consistency.
• Epoxy and engineering plastic housing resists heat-related deformation and cracking.
• Double-iridium center and ground electrodes reduce gap erosion and maintain spark quality.

What are the build details and materials used?

These ignition coils combine an outer shell of epoxy resin and reinforced engineering plastics with an interior copper coil for conductivity; the spark plugs use double-iridium electrodes and corrosion-resistant materials. The design choices focus on thermal stability and long-term electrical performance rather than cosmetic features.

• Exterior: epoxy resin and high-strength engineering plastic for heat resistance.
• Interior coil: high-conductivity copper for fast, reliable spark delivery.
• Spark plugs: double-iridium electrodes and corrosion-resistant center/ground parts.

How should I install and maintain these ignition components?

Installation follows standard ignition coil and spark plug replacement procedures: disconnect the battery, remove the old coil and plug, inspect the well and wiring, fit the new parts to factory torque, and reconnect. Periodic inspection during routine service helps spot loose connectors, oil contamination, or excessive wear before failure.

• Recommended: check fit using vehicle compatibility guides before ordering.
• Use correct torque values for plugs and coils to avoid damage.
• Inspect spark plug wells and coil boots for oil or debris during replacement.

Who is this for This Marsram kit is intended for DIY mechanics and professional technicians replacing aging ignition coils and spark plugs on compatible Nissan and Infiniti models who want a balance of durability and performance. It’s useful when you need reliable starting, steadier idle, and restored throttle response without replacing the entire ignition system — just be sure to verify the fitment numbers and vehicle application before ordering.

FAQ

Q: Does this UF549 coil and plug kit fit my 2010 Nissan Altima 2.5L?

A: Yes, the UF549-style coil and iridium plug are compatible with 2010 Altima 2.5L, but confirm fit with your VIN or the listed replacement part numbers before ordering.

Q: How often should I replace these spark plugs and coils?

A: Double-iridium plugs typically last longer than standard plugs; inspect at regular service intervals and replace coils when misfires or electrical faults appear.