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SKU: 3903 / UPC: 87295139035
NGK Iridium IX Spark Plug Box of 4 (BPR6EIX-11)
The NGK Iridium IX Spark Plug Box of 4 (BPR6EIX-11). Engineered for performance enthusiasts, these spark plugs deliver unmatched acceleration, superior fuel efficiency, and exceptional durability, making them the top choice over all other spark plugs on the market. NGK, the world’s leading spark plug manufacturer, combines cutting-edge iridium technology with precision engineering to ensure your engine runs at its peak, whether you’re cruising city streets or pushing the limits on the track.
Why NGK?
The NGK Iridium IX BPR6EIX-11 spark plugs outperform copper, platinum, and standard nickel plugs in every category. Here’s why they’re the ultimate upgrade for your vehicle:
- Ignitability: The 0.6mm fine-wire iridium center electrode delivers a consistently stable spark, ensuring complete fuel combustion for maximum power output.
- Acceleration: Experience lightning-fast throttle response and smoother idling, perfect for high-performance and fuel-injected engines.
- Fuel Efficiency: Optimized combustion reduces fuel consumption, saving you money at the pump while boosting MPG.
- Durability: Iridium’s high melting point and robust alloy—six times harder and eight times stronger than platinum—ensure a lifespan of 40,000 to 50,000 miles, even in high-heat, turbocharged engines.
- Anti-Fouling & Anti-Corrosion: Trivalent metal plating provides superior resistance to corrosion and seizing, eliminating the need for anti-seize lubricants and ensuring easy installation and removal.
- Easier Cold Starts: Lower voltage requirements reduce battery strain, making startups effortless, even in freezing conditions.
No other spark plug matches the NGK Iridium IX’s blend of performance, reliability, and longevity, making it the go-to choice for automotive enthusiasts and professionals worldwide.
Included:
- Quantity: Box of 4 NGK Iridium IX Spark Plugs
- Part Number: BPR6EIX-11 (NGK Stock #3903)
- UPC: 87295139035
- Specifications:
- Thread Size: 14mm
- Hex Size: 5/8" (16mm)
- Reach: 19mm (3/4")
- Seat Type: Gasket
- Gap: Pre-gapped at 0.044" (1.1mm) – adjustable for specific applications
- Heat Range: 6
- Terminal Type: Solid
- Resistor: Yes
- Center Electrode: Fine-wire iridium, 0.6mm
- Ground Electrode: Taper-cut, nickel alloy
- Torque Specs:
- Cast Iron Heads: 18–25.3 lb. ft.
- Aluminum Heads: 18–21.6 lb. ft.
- Warranty: Manufacturer’s warranty.
- Packaging: Securely packaged for safe delivery.
Fitment:
The NGK Iridium IX BPR6EIX-11 spark plugs are compatible with a wide range of vehicles from leading manufacturers. Below is a detailed fitment list based on verified compatibility data.
Always confirm with your vehicle’s manual or NGK’s Part Finder at ngk.com
Suzuki
- Model: Various (e.g., Samurai, Sidekick)
- Years: 1985–1995
- Engines: 1.3L, 1.6L
- OEM Part Number: 99000-79K60-PR6
Mazda
- Model: 323, Miata, Protege
- Years: 1986–1994
- Engines: 1.6L, 1.8L
- OEM Part Number: 1UN4-18-110
Nissan
- Model: Pulsar, Sentra
- Years: 1982–1990
- Engines: 1.6L
- OEM Part Number: BY481-BPR6E
Mitsubishi
- Model: Mirage, Cordia
- Years: 1983–1992
- Engines: 1.5L, 1.6L
- OEM Part Number: MZ602061
Daihatsu
- Model: Charade
- Years: 1988–1992
- Engines: 1.0L, 1.3L
- OEM Part Number: 999-06910-X9-002
Harley-Davidson
- Model: Various (e.g., Sportster)
- Years: 1986–2006
- Engines: 883cc, 1200cc
- OEM Part Numbers: EVS13P, 32327-91
Other Compatible Brands
- Bosch: WR6DPX, WR7DPX, 4217
- DENSO: IW20, IW20TT, W20EPR-ZU11, 3323, 4709
- Beck/Arnley: 1765291
For precise fitment, use NGK’s Part Finder (ngkpartfinder.co.uk or ngk.com) or consult your vehicle’s service manual. These plugs cover 95% of import and domestic vehicles, making them a versatile choice for performance upgrades or OEM replacements.
Cross-Reference Part Numbers
The NGK BPR6EIX-11 (3903) replaces the following part numbers, ensuring compatibility with a broad range of applications:
- NGK: BPR6EIX-11
- Suzuki: 99000-79K60-PR6
- Beck/Arnley: 1765291
- DENSO: 3323, 4709, IW20, IW20TT, W20EPR-ZU11
- Harley-Davidson: EVS13P, 32327-91
- Daihatsu: 999-06910-X9-002
- Nissan: BY481-BPR6E
- Mitsubishi: MZ602061
- Bosch: WR6DPX, WR7DPX, 4217
- Mazda: 1UN4-18-110
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