Sixity Auto NGK Ruthenium HX Spark Plugs for Nissan Altima 2.5L (2007–2018) — 4-Pack, Long-Life Fine-Wire Electrodes

These four NGK Ruthenium HX spark plugs are OEM-grade replacements engineered to restore reliable ignition for Nissan Altima 2.5L L4 engines from 2007 through 2018.

If your Altima is due for maintenance or you've noticed rough idling, reduced responsiveness, or a drop in fuel efficiency, installing a fresh set of spark plugs is a straightforward way to address ignition-related issues. The NGK Ruthenium HX design combines a fine-wire center electrode with long-lasting ruthenium for consistent spark performance, and this kit from Sixity Auto includes four plugs plus original packaging and hardware for a direct-fit replacement.

How do these NGK Ruthenium HX plugs improve everyday driving?

Ruthenium’s fine-wire electrode supports a stronger, more consistent spark with lower voltage demand compared to conventional plugs. That steadier ignition helps smoother throttle response, more consistent starts, and can contribute to steady fuel burn under normal driving conditions.

• Fine-wire center electrode for cleaner, focused spark
• Ruthenium alloy resists wear for longer service life
• Factory-style fitment preserves engine timing and clearance

Will these plugs fit my Nissan Altima 2.5L from 2007–2018?

This four-pack is specified for the 2.5L L4 Altima models made between 2007 and 2018 and comes as a direct replacement part. Always verify fitment using your vehicle’s VIN or the retailer’s Confirmed Fit tool before ordering to ensure compatibility with optional engine variants or previous modifications.

• Designed for Nissan Altima 2.5L L4 engines (2007–2018)
• Direct-replacement part number alignment with NGK specifications
• Includes original packaging and hardware for straightforward installation

What are the installation and maintenance considerations?

Replacing spark plugs on the Altima is a common service task; use a torque wrench and the correct socket to avoid over-tightening. Inspect ignition coils and boot seals while the plugs are out, and replace any damaged components to maintain performance and prevent misfires.

• Recommended torque per Nissan spec; use anti-seize only if specified
• Check coil boots and wiring for cracks or oil contamination
• Replace in sets to keep ignition timing and performance consistent

How long can I expect these plugs to last?

Ruthenium electrodes offer improved wear resistance versus standard copper plugs, typically extending service intervals. Actual lifespan depends on driving habits, engine condition, and whether the engine runs lean or rich, but many drivers see extended intervals before replacement is necessary.

• Ruthenium resists electrode erosion for longer life
• Longevity depends on engine health and operating conditions
• Monitor spark behavior and scheduled maintenance intervals

Who this is for: Drivers and DIY mechanics who own a Nissan Altima 2.5L L4 from model years 2007 through 2018 and want an OEM-equivalent spark plug upgrade that balances lasting performance with reliable fitment. It's also suitable for service shops and technicians seeking authentic NGK parts supplied with original packaging and hardware for hassle-free replacement. If you value consistent ignition, easier cold starts, and fewer ignition-related drivability issues, this Four-Pack from Sixity Auto is built to meet those needs while fitting directly into your vehicle’s existing ignition system.