Product DescriptionProduct IntroductionThese are authentic NGK Iridium IX performance spark plugs, designed as direct OE equivalent replacement for original factory spark plugs for gasoline engines.Equipped with ultra-fine 0.6mm laser welded iridium center electrode, iridium material is 6 times harder than platinum, delivering stronger ignition ability, faster throttle response, smoother idle, better fuel efficiency and longer service life (60,000+ miles service interval).Tapered cut ground electrode optimizes flame kernel growth, effectively avoiding misfire under heavy load and high temperature conditions. Built-in 5kΩ suppressor resistor eliminates radio interference, anti-corrosion metal shell prevents thread seizure and air leakage, fully meets vehicle OEM standard, plug and play without modification.Package Content4 x NGK 4272 BKR6EIX-11 Iridium IX Spark Plugs (Original NGK Retail Box)Core Advantages
- 0.6mm ultra-thin iridium fine wire electrode, great for naturally aspirated & turbocharged engines
- Copper core inner electrode strengthens heat dissipation, reduces carbon deposit and overheating risk
- OE-spec dimension, wide compatibility for Japanese, European, American, Korean vehicles
- Durable plating treatment, suitable for daily driving and mild vehicle modification
Full Technical Specifications
- NGK Stock Number: 4272
- Model Code: BKR6EIX-11
- Series: Iridium IX
- Center Electrode: 0.6mm Fine Wire Iridium
- Ground Electrode: Tapered Cut Nickel Alloy
- Pre-set Gap: 1.1mm
- Heat Range: 6
- Thread Size: M14 × 1.25
- Thread Reach: 19mm
- Seat Type: Gasket Seal
- Hex Size: 16mm (5/8")
- Terminal: Solid Fixed Terminal
- Built-in Resistor: 5000 Ohm
Installation Torque Recommendation
- Aluminum Cylinder Head: 10.8 – 14.5 lb.ft
- Cast Iron Cylinder Head: 10.8 – 18 lb.ft
Cross Reference OE Numbers & Compatible BrandsReplaceable OEM OE Part NumbersToyota: 90919-01210Honda: 12290-RB0-003Nissan: 22401-5M015Mazda: L3Y2-18-110Compatible Car MakesToyota, Honda, Nissan, Mazda, Subaru, Volkswagen, Audi, BMW, Peugeot, Citroen, Hyundai, Kia etc.Important Purchase Notes
- Please confirm NGK part number 4272 / BKR6EIX-11, OEM number and your vehicle year, engine displacement before checkout.
- All fitment data is for reference only, verify exact compatibility via VIN code or factory manual.
- Check listing photos carefully to confirm this is the correct replacement part you need.
Our After-sales Service✅ Shipped from US local warehouse, fast & reliable delivery✅ All messages replied within 24 working hours✅ If you receive defective items or have fitment problems, please contact us FIRST before opening a case or leaving negative response, we will solve the issue properly for you.
- Shipping
- Returns
- Contact Us
Shipping：Ship from US Warehouse
Tracking uploaded within 2hrs; ship out within 24hrs (excl holidays/weekends), US delivery: 2-5 business days.
Returns：30-day valid after delivery
· Damaged/defective goods: free replacement or full refund, contact us first.
· Buyer’s personal reason return: buyer pays return shipping; up to 20% restock fee.
· RMA required before return; items must be unused with original packaging, unauthorized returns refused.
Service & response
Messages replied within 24 working hours. Contact us for any issues before dispute/negative response; positive response issued after completed order.
Shipping
Shipping：Ship from US Warehouse
Tracking uploaded within 2hrs; ship out within 24hrs (excl holidays/weekends), US delivery: 2-5 business days.
Returns
Returns：30-day valid after delivery
· Damaged/defective goods: free replacement or full refund, contact us first.
· Buyer’s personal reason return: buyer pays return shipping; up to 20% restock fee.
· RMA required before return; items must be unused with original packaging, unauthorized returns refused.
Contact Us
Service & response
Messages replied within 24 working hours. Contact us for any issues before dispute/negative response; positive response issued after completed order.
On Sep 23, 2026 at 02:14:06 PDT, seller added the following information:
