A-Premium Double Iridium Spark Plugs for 2.5L L4 Nissan (Pack of 4) — Fine Wire, Pre-Gapped 0.044"

A-Premium Double Iridium spark plugs (pack of 4) are precision-engineered ignition electrodes for 2.5L L4 Nissan engines, delivering reliable spark, extended service life, and OEM-grade fitment.

These fine-wire double iridium plugs are built to match OEM specifications for multiple Nissan Altima and Rogue model years, offering improved ignitability and long replacement intervals. Each plug uses an iridium-tipped center electrode and a matched iridium core to provide stable combustion over many miles. The set of four is intended for engines with a 0.044-inch gap and fits thread and reach dimensions specified for 2.5L L4 applications.

How do these plugs improve starting and throttle response?

Double iridium electrodes reduce the voltage needed to produce a complete, consistent spark, which helps the engine light off more reliably in varied conditions. Better spark stability can make cold starts, low-RPM acceleration, and sudden throttle inputs feel crisper.

• Iridium center tip and core for consistent spark energy
• Fine wire design minimizes quenching and improves flame kernel growth
• Matched 0.044" gap for optimal spark jump in 2.5L L4 engines
• 5000-ohm resistor to reduce electrical interference

Will these fit my Nissan Altima or Rogue, and what dimensions matter?

The plugs are made to fit specific 2.5L L4 Nissan applications including Altima and Rogue model years listed by the manufacturer. Important physical specs—thread diameter, reach, hex size, and insulator height—match OEM expectations, ensuring proper seating and heat transfer.

• Thread diameter: 12.00 mm — matches factory threads
• Reach: 26.50 mm and insulator height: 51.00 mm for correct positioning
• Hex size: 0.55 in for standard socket fitment
• Pre-gapped at 0.044 in to meet Nissan 2.5L L4 requirements

How long will these double iridium plugs last and when should I replace them?

Iridium electrodes are chosen for their wear resistance and extended life compared with conventional materials. Under normal driving conditions and correct installation, these plugs typically offer a long service interval, reducing the need for frequent changes.

• Designed for extended mileage — recommended replacement around 100,000–120,000 miles
• Durable iridium tip resists erosion and maintains gap over time
• Regular inspection advised if engine performance changes or misfires occur
• OEM-style construction helps avoid premature overheating or deposits

Are these spark plugs simple to install and what should I watch for?

Installation is straightforward for anyone comfortable with basic engine maintenance; use the proper torque and correct socket to avoid damaging the hex or threads. Always ensure the engine is cool, confirm the plug gap, and re-torque to manufacturer specs after hand-threading to prevent cross-threading.

• Hand-start each plug before tightening to avoid thread damage
• Use correct torque values and a 0.55 in hex socket for secure fit
• Verify the 0.044" gap if your engine requires a specific clearance
• Replace boots or coils as needed for a complete ignition service

Who is this for: Drivers and home mechanics who own Nissan Altima or Rogue vehicles with the 2.5L L4 engine and want an OEM-compatible ignition upgrade that balances long life with reliable performance. These A-Premium double iridium plugs suit routine maintenance schedules for commuters, rideshare drivers, and anyone focused on preserving fuel efficiency and smooth running across extended service intervals.