ZFR6FIX-11 NGK Iridium Spark Plug | Genuine NGK Spark Plug

🔧 Product Description

NGK Iridium Spark Plug – Part Number: ZFR6FIX-11

Iridium NGK spark plugs offer a longer service life than a standard nickel-tipped spark plug: while nickel-alloy plugs offer a service life of roughly 20,000-40,000km, NGK Iridium IX spark plugs offer a service life of up to 60,000km, so fewer replacements are needed over time despite the higher initial cost.

Precious-metal spark plugs like the NGK Iridium IX also offer higher ignitability, achieved with an exposed fine-tip centre electrode that promotes superior flame growth compared with a standard spark plug. Iridium has a much higher melting point (2410°C) than nickel (1453°C), allowing the centre electrode diameter to be reduced from 2.5mm to 0.6mm – a smaller electrode mass that reduces the impedance to flame progress, helping acceleration, fuel consumption and idle quality.

⚙️ Key Features

• Fine iridium-tipped centre electrode for a slow wear rate and stable idle
• Longer service life than standard nickel plugs
• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
• Corrugated ribs reduce the risk of flashover
• Pure alumina silicate ceramic insulator, providing superior strength and better heat transfer
• Copper core aids in heat removal
• Triple seals prevent leakage

📏 Specifications

• NGK stock number: 6441
• Thread: 14 mm
• Reach: 19 mm (3/4 in)
• Hex: 16 mm (5/8 in)
• Seat: Gasket
• Terminal: Solid
• Type: ISO Extended Projection Wide Gap

🚘 Application

Listed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment and automotive vehicles. The chart shows a 1.0 mm gap for these engines, but check it against your engine's manual before fitting.

• Nissan NSD 90A (90 HP, 2008-2004) – Outboard Engine
• Nissan NSD 90A2 (90 HP) – Outboard Engine
• Nissan NSD 70A (70 HP, 2008-2004) – Outboard Engine
• Nissan NSD 70A2 (70 HP) – Outboard Engine
• Nissan NSD 50A (50 HP, 2008-2004) – Outboard Engine
• Nissan NSD 40A (40 HP, 2008-2004) – Outboard Engine
• Tohatsu MD90A (90 HP, 2008-2004) – Outboard Engine
• Tohatsu MD90A2 (90 HP, 2008-2004) – Outboard Engine
• Tohatsu MD70A2 (70 HP, 2008-2004) – Outboard Engine
• Tohatsu MD50A (50 HP, 2008-2004) – Outboard Engine
• Tohatsu MD40A (40 HP, 2008-2004) – Outboard Engine
• Acura CL (2003-2001) – 4-10 per engine
• Acura EL (2005-2001) – 4-10 per engine
• Acura TL (2003-2002) – 4-10 per engine
• Bmw 550i (2010-2006) – 4-10 per engine
• Bmw 650i (2010-2006) – 4-10 per engine
• Bmw 750i (2008-2006) – 4-10 per engine
• Bmw 750Li (2008-2006) – 4-10 per engine
• Bmw X5 (2010-2004) – 4-10 per engine
• Chevrolet Aveo (2011-2009) – 4-10 per engine
• Chevrolet Aveo5 (2011-2009) – 4-10 per engine
• Chrysler Aspen (2007) – 4-10 per engine
• Dodge B1500 (1998-1997) – 4-10 per engine
• Dodge B2500 (1998-1997) – 4-10 per engine
• Dodge B3500 (1998-1997) – 4-10 per engine

That is the 25 most common of 51 applications NGK's charts list for this plug – ask us to check yours.

🔄 Supersession & Cross Reference

NGK's cross-reference tables list this plug against these part numbers.

• Bosch: 9603, 9604, 9664, FR7KII33X, FR7LII33X, FR8KII332X
• DENSO: 4701, 5357, 5358, IK16L, IK16TT, IK20L
• Champion: 9803, 9803S
• Autolite: XP5224

📦 Condition

• Brand new genuine product
• Supplied in original packaging