IFR6T11 NGK Iridium Spark Plug | Genuine NGK Spark Plug

🔧 Product Description

NGK Iridium Spark Plug – Part Number: IFR6T11

NGK iridium spark plugs feature an iridium alloy on the centre electrode, welded on with a laser – one of the world's hardest metals, with a melting point of 2450°C, giving very high resistance to spark erosion and, on average, double the service life of a standard nickel spark plug.

⚙️ Key Features

• Fine iridium-tipped centre electrode and platinum-tipped ground electrode for a slow wear rate, stable idle, improved fuel efficiency and lower emissions
• Longer service life
• 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
• Triple seals prevent leakage
• Copper core aids in heat removal

📏 Specifications

• NGK stock number: 4589
• Thread: 14 mm
• Reach: 19 mm (3/4 in)
• Hex: 16 mm (5/8 in)
• Seat: Gasket
• Terminal: Solid
• Type: ISO Projected FR-Series 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.

• Toyota EPIC 21 - 4.0L (300 HP) – Inboard Engine
• Toyota EPIC 22 - 4.0L (300 HP) – Inboard Engine
• Toyota S22 - 4.0L (300 HP) – Inboard Engine
• Toyota X22 - 4.0L (300 HP) – Inboard Engine
• Daewoo Lanos (2002-1999) – 4-8 per engine
• Lexus ES300 (1995-1994) – 4-8 per engine
• Lexus ES300 (2003-1999) – 4-8 per engine
• Lexus ES330 (2006-2004) – 4-8 per engine
• Lexus GS300 (1993) – 4-8 per engine
• Lexus GS300 (2005-2001) – 4-8 per engine
• Lexus GS400 (2000-1998) – 4-8 per engine
• Lexus GS430 (2007-2001) – 4-8 per engine
• Lexus GX470 (2009-2003) – 4-8 per engine
• Lexus HS250h (2012-2010) – 4-8 per engine
• Lexus IS300 (2005-2001) – 4-8 per engine
• Lexus LS400 (2000-1990) – 4-8 per engine
• Lexus LS430 (2006-2001) – 4-8 per engine
• Lexus LX470 (2007-1998) – 4-8 per engine
• Lexus RX300 (2003-1999) – 4-8 per engine
• Lexus RX330 (2006-2004) – 4-8 per engine
• Lexus RX400h (2008-2006) – 4-8 per engine
• Lexus SC300 (1994-1993) – 4-8 per engine
• Lexus SC400 (2000-1992) – 4-8 per engine
• Lexus SC430 (2010-2002) – 4-8 per engine
• Lotus Elan (1991) – 4-8 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.

• DENSO: 3297, 3335, 4504, 4702, IK20TT, PK20TT, SK20R-P11, SK20R11
• Champion: 9806, 9806-2
• ACDelco: 41-111
• Autolite: XP3923
• Beck Arnley: 1765299
• Bosch: 8100
• Torch: K6RTIP

📦 Condition

• Brand new genuine product
• Supplied in original packaging