A-Premium Ignition Coil & Iridium Spark Plug Kit, Set of 4 for Nissan/Infiniti — Bolt-On OEM Fit

A-Premium Set of 4 ignition coils paired with iridium spark plugs delivers reliable spark performance for compatible Nissan and Infiniti engines.

This plug-and-play kit combines four bolt-on ignition coils with four iridium-tipped spark plugs designed to meet factory specifications for a broad range of Nissan and Infiniti models. The components are engineered to the listed resistances, terminal types, and thread dimensions so you can replace worn parts with a matched set that restores consistent firing and helps maintain smooth idle, dependable starts, and steady throttle response.

Which vehicles will this ignition coil and spark plug kit fit?

The set covers many Nissan passenger and light-commercial models from the late 2000s through the 2010s, plus select Infiniti V6 applications. Check your OEM reference number against the included cross-references to confirm compatibility before ordering.

• Common Nissan fits: Altima, Sentra, Rogue, X-Trail, Versa, March, Tiida, Cube, NP300/Frontier, Pathfinder, Urvan
• Infiniti models: FX50, M56, Q70/Q70L, QX60, QX70
• Reference numbers included: UF-549, 22448-ED000, 22448-JA00A/C and manufacturer cross-codes

How are these coils and plugs constructed and what are the specs?

The coils use a three-terminal design with blade-style terminals and bolt-on mounting to the valve cover, matching original equipment mounting and electrical fit. The iridium plugs use a nickel body with a fine iridium center electrode for reliable ignition and extended life compared with conventional copper plugs.

• Coil terminals: 3; terminal type: blade; mount type: bolt-on
• Spark plug material: iridium on a nickel body; gap: 1.0–1.1 in
• Thread diameter: 12 mm; recommended installation torque: 15–20 N·m
• Secondary coil resistance: approximately 3–12 kΩ

What benefits can I expect after installing this matched set?

Replacing ignition coils and plugs as a matched set brings back uniform spark delivery to each cylinder, which can reduce misfires and uneven idling caused by aging components. While outcomes vary by engine condition, a fresh matched kit makes troubleshooting easier and prevents mismatched component wear between new and old parts.

• Improved ignition consistency across all cylinders
• Easier diagnosis when performing tune-ups or resolving misfires
• Durable iridium electrodes for longer service intervals

How simple is the installation and what should I prepare?

Installation is straightforward for anyone comfortable with basic engine maintenance: remove the old coils and plugs, torque the new plugs to specification, and secure the coil packs to the valve cover. Use the included vehicle-fit references and OEM torque values to avoid over-tightening and ensure correct electrical mating.

• Tools needed: ratchet, spark-plug socket, extension, torque wrench
• Torque spec for plugs: 15–20 N·m; ensure clean threads before installation
• Disconnect battery negative terminal for added safety during replacement

Who is this for: This A-Premium 4-coil and 4-iridium-plug kit is aimed at DIY mechanics, independent repair shops, and vehicle owners who need a matched replacement for ignition components on compatible Nissan and Infiniti models. It is ideal if you want a complete, OEM-style swap with a one-year unlimited-mileage warranty backing the parts.