A-NAFTULY Iridium Spark Plugs 4-Pack for 1.5–2.4L Inline-4 Engines — 0.6mm Finewire, Laser-Welded Tip

A-NAFTULY Iridium spark plugs (4-pack) deliver precise ignition with a 0.6mm finewire iridium tip engineered for improved combustion and longer service life.

These A-NAFTULY iridium spark plugs are designed to replace a wide range of OE references and fit many 1.5–2.4L inline-4 engines from Toyota, Nissan, Mitsubishi and other manufacturers. Built with a laser-welded iridium center electrode and a durable ground electrode, they prioritize efficient spark formation, stable idle and consistent throttle response. The plugs are compatible with numerous part numbers (including BKR5EIX-11, BKR5EGP, IFR5E11 and others) to simplify cross-referencing when you’re choosing replacements for older or high-mileage vehicles.

Which vehicles will these iridium plugs fit?

These plugs match many compact and midsize models with 1.5–2.4L inline-four engines. Fitment covers several years for Toyota Corolla, Yaris, Matrix, Prius, Tacoma and Celica, plus Nissan Altima, Frontier, Sentra, Xterra and numerous Mitsubishi models like Lancer, Outlander and Eclipse. Always cross-check your vehicle’s OEM plug number or consult the fitment list in the product images before ordering.

• Common Toyota fits: Corolla, Yaris, Matrix, Prius, Tacoma, Celica (various model years)
• Nissan examples: Altima (1993–2001), Frontier, Sentra, Xterra
• Mitsubishi examples: Lancer (2002–2017 ranges), Outlander, Eclipse, Galant, Mirage
• Includes cross-reference part numbers for easier selection

How do these plugs affect fuel efficiency and ignition?

The fine 0.6mm iridium center electrode concentrates the spark, which helps produce a more complete and consistent burn in each cylinder. That improved ignition can reduce misfires and support smoother throttle transitions, potentially aiding fuel economy under normal driving conditions. Durable construction and precision gaps keep performance stable between service intervals.

• 0.6mm iridium center electrode sharpens spark focus
• Laser-welded tip for consistent spark and longevity
• Stable gap tolerances to reduce misfires and rough idle

What should I know about installation and maintenance?

Installation follows the same basic steps as standard spark plugs but requires correct torque and anti-seize practices to avoid damage to the electrode or threads. Use a torque wrench and the vehicle manufacturer’s torque spec, and inspect ignition coils and wires while replacing plugs. If you’re uncertain, have a qualified technician fit them to ensure correct sealing and gap integrity.

• Check and use the vehicle OEM torque specification
• Inspect ignition coils, boots and wires at the same time
• Use anti-seize on threads only if recommended by the vehicle manual

How does A-NAFTULY support this product after purchase?

A-NAFTULY includes customer support for fitment questions and offers a limited warranty period for manufacturer defects. Packaging and labeling include cross-reference numbers to help confirm compatibility. If you encounter issues, contact the seller with vehicle details and part numbers for faster assistance.

• Customer support for fitment and technical questions
• Cross-reference numbers printed for easier verification
• Warranty coverage for manufacturer defects—contact seller for details

Who is this for: Drivers and DIY mechanics who own compact or midsize cars, trucks or SUVs with 1.5–2.4L inline-four engines and want a long-life aftermarket spark plug that matches common OEM reference numbers. This 4-pack suits routine tune-ups and those replacing old or fouled plugs who want a higher-precision electrode than standard nickel plugs. Always verify fitment against your vehicle’s OEM part number before purchase.