A-Premium Iridium Platinum Spark Plugs Pack of 6 — 14mm, 26.5mm Reach, Fine-Wire for L6 Engines, Pre-Gapped 0.040/0.044

These A-Premium spark plugs combine an iridium center tip with a platinum core to improve ignition reliability and resist electrode wear. Built with a 5/8" hex, 14 mm thread diameter, and a reach of 26.5 mm, they match the physical specifications required by numerous Toyota, Subaru, BMW, Volvo, Lexus and other L6 applications. The plugs include an internal resistor of 5000 ohms and are pre-set to gap sizes of 0.040/0.044 inches to suit compatible engines.

Which vehicles and engines will these spark plugs fit?

These plugs are intended for a wide range of L6 and some V6 engines from popular manufacturers. The listing includes specific model years for Toyota (Camry, Tacoma, Tundra, Highlander, etc.), Subaru (Legacy, Outback, Tribeca), BMW (3 and 5 Series, X3, X5, Z4), Volvo and Lexus platforms—confirm compatibility with your vehicle’s year and engine code before purchasing.

• Toyota: Camry (2007–2017), Tacoma (2005–2015), Tundra (2005–2013), and more
• Subaru: Legacy & Outback (selected years 2001–2019), Tribeca (2010–2014)
• BMW: 128i, 323i, 328i, 330i, 525i, 530i and related xDrive/xi models (2006–2010 range)
• Volvo, Lexus, Saab fitments listed—verify OEM reference numbers

What are the technical specs and why do they matter?

Key dimensions and materials determine fit and longevity. The iridium tip and platinum core provide high melting point and slower wear than standard nickel plugs, while the 5000-ohm resistor helps reduce radio frequency interference with electronics.

• Center electrode tip: iridium for improved wear resistance
• Core material: platinum for structural stability and longevity
• Gap options: 0.040" / 0.044"—pre-set for many factory specs
• Hex size 5/8", thread 14 mm, reach 26.5 mm, insulator height 50.50 mm

How do these plugs affect maintenance intervals and reliability?

A-Premium recommends a replacement interval aligned with iridium/platinum technology expectations. While plug life varies by driving conditions and engine tune, the construction supports extended mileage between changes compared with conventional plugs.

• Recommended replacement roughly every 80,000–100,000 miles under normal conditions
• Iridium tip slows electrode erosion for steady spark performance
• Platinum core helps maintain structural integrity over long service periods
• Resistor minimizes ignition noise that could interfere with electronics

How should I confirm fitment before ordering?

Cross-check the A-Premium reference numbers and physical specs against your vehicle’s OEM part number or owner’s manual. If your vehicle appears on the fitment list, also verify thread size, reach and hex dimensions to ensure correct installation and clearance in the cylinder head.

• Match reference numbers: LFR6AIX-11, LFR6AIX11 and listed alternates
• Confirm thread diameter (14 mm) and reach (26.5 mm) with OEM data
• Check the required gap size and adjust if your engine specifies a different gap
• When in doubt, consult a mechanic or dealer with your VIN

Who is this for: These A-Premium iridium platinum spark plugs suit DIY mechanics, professional technicians, and owners of compatible Toyota, Subaru, BMW, Volvo, Lexus and related models seeking a long-life, high-stability ignition plug. They work best for drivers who want a drop-in replacement that balances longevity with predictable ignition performance, provided you confirm the physical dimensions and fitment match your engine.