A-NAFTULY Iridium Spark Plugs 4-Pack 5464 BKR5EIX-11 — 0.6mm Fine-Wire, Laser-Welded

A-NAFTULY Iridium Spark Plugs 4 Pack (model 5464 / BKR5EIX-11) are high-performance replacement plugs engineered to deliver reliable ignition, improved fuel economy, and long service life for many 1.5–2.4L Toyota, Nissan and Mitsubishi engines.

These iridium-tipped spark plugs use a 0.6 mm fine-wire center electrode and laser-welded construction for consistent sparks and longer electrode life compared with standard copper plugs. Supplied as a multi-pack, they match a wide range of OEM reference numbers and fitment lists, making them an economical choice when you need to replace multiple plugs at once. Below you’ll find clear answers to common buyer questions, concrete fitment details, and specific benefits so you can decide quickly and confidently.

Which engines and models do these spark plugs fit?

These plugs are intended for many 1.5–2.4L inline-4 gasoline engines from Toyota, Nissan and Mitsubishi. They cover popular models across multiple year ranges; always cross-check by VIN or original part number before ordering.

• Toyota: Corolla L4 1.8 (1998–2008), Yaris L4 1.5 (2006–2019), Matrix 1.8/2.4 (2003–2013), Prius 1.5 (2001–2009), Tacoma 2.4/2.7 (1999–2004), Tercel 1.5 (1995–1999), Celica 1.8 (2000–2005)
• Nissan: Altima L4 2.4 (1993–2001), Frontier 2.4 (1998–2004), Sentra 1.6 (1991–1999), Xterra 2.4 (2000–2004)
• Mitsubishi: Lancer 2.0/2.4 (2002–2017 depending on engine), Eclipse 2.4 (1996–2005), Outlander 2.4 (2011–2013), Galant 2.4 (1994–2003), Mirage 1.8 (1993–2002)

How do these iridium plugs improve fuel efficiency and performance?

The 0.6 mm fine-wire iridium tip concentrates the spark, which promotes more complete combustion of the air–fuel mixture. Laser-welded construction preserves electrode geometry and spacing longer, helping maintain ignition consistency over many miles.

• Fine-wire center electrode for stronger, focused sparks
• Laser welding resists electrode erosion and drift
• Designed to sustain stable firing and steady engine idle

Which OEM reference numbers and cross-references match these plugs?

This A-NAFTULY set cross-references a broad array of factory and aftermarket numbers, letting you match what’s currently on your vehicle or in your service manual. Verify against your vehicle’s recommended part number for an exact fit.

• Common references: 5464, BKR5EIX-11, BKR5EGP, IFR5E11, FR5AHX, PFR5C11 and many others
• Also listed under multiple aftermarket codes used by parts suppliers—use cross-check to confirm

What comes in the package and what warranty is included?

The pack contains four iridium spark plugs (note: some listings may show six—confirm product count before purchase) and A-NAFTULY provides a 12-month limited warranty for manufacturing defects. Customer support is available to help with fitment questions or replacement claims.

• Packaged set of iridium spark plugs suitable for replacing multiple cylinders
• 12-month limited warranty and seller support
• Installation recommendations: inspect gap and follow torque specifications in your service manual

Who is this for: drivers and mechanics replacing worn or fouled spark plugs on 1.5–2.4L inline-4 engines who want an upgrade from standard copper plugs. These A-NAFTULY iridium plugs suit owners of older Toyotas, Nissans and Mitsubishis seeking longer service life, more stable ignition and potential fuel-efficiency benefits without changing other engine components. Always confirm compatibility using your vehicle’s model year, engine size and OEM part number before purchase.