{"product_id":"ngk-iridium-ix-spark-plug-part-number-5545-high-performance-automotive-spark-plug-for-lamborghini-ducati-honda-kawasaki-ktm-suzuki-yamaha","title":"NGK Iridium IX Spark Plug Part Number 5545 – High-Performance Automotive Spark Plug for Lamborghini, Ducati, Honda, Kawasaki, KTM, Suzuki, Yamaha","description":"NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.\nNGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability.\nLAMBORGHINI COUNTACH 1989-85, DIABLO 1991, LM002 1990-86;  M\/C - 2005-1985 HONDA, 2005-1983 KAWASAKI, 1992 KTM, 1995-1985 SUZUKI, 1993-1992 YAMAHA\n\u003cul\u003e\n  \u003cli\u003eRECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs\u003c\/li\u003e\n  \u003cli\u003eTrivalent metal plating for superior anti-corrosion and anti-seizing properties\u003c\/li\u003e\n  \u003cli\u003eOutstanding acceleration, high fuel efficiency and durability\u003c\/li\u003e\n  \u003cli\u003eFine iridium tip ensures durable and consistent spark\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe NGK Iridium IX spark plug (Part Number 5545) is engineered for high-performance and modified vehicles, delivering exceptional ignition performance and durability. Designed with a fine iridium tip, this spark plug ensures consistent and reliable sparks, which translate into improved acceleration, fuel efficiency, and overall engine responsiveness. The tapered cut ground electrode enhances starting reliability, idle stability, and throttle response, making it an ideal upgrade for enthusiasts seeking peak engine performance. Iridium's high melting point and hardness, six times greater than platinum, guarantee long-lasting durability even under severe operating conditions. The trivalent metal plating offers superior anti-corrosion and anti-seizing properties, extending the lifespan of the spark plug and maintaining optimal performance over time. Suitable for various high-performance applications, the NGK Iridium IX is recommended as an upgrade from OE nickel alloy plugs for enhanced ignition efficiency and engine responsiveness. It fits a broad range of vehicles, including Lamborghini Countach models from 1985 to 1989, Lamborghini Diablo 1991, Ducati Monster models from 1998 to 1999, as well as Honda, Kawasaki, KTM, Suzuki, and Yamaha motorcycles from the mid-1980s to mid-1990s. Proper installation of these spark plugs can significantly improve throttle response and acceleration, making them a preferred choice for performance enthusiasts and professional mechanics. This box contains four units, designed for easy replacement and reliable operation in demanding driving conditions. Whether used in modified street cars or high-performance motorcycles, NGK Iridium IX spark plugs are built to deliver consistent, high-quality ignition for optimal engine operation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDesigned for high-performance and modified vehicles to enhance engine output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIridium tip provides outstanding ignitability and long-lasting durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTapered cut ground electrode improves starting, idle, and throttle response\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTrivalent metal plating offers superior anti-corrosion and anti-seizing properties\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with a wide range of high-performance cars and motorcycles from various brands\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEngineered for consistent spark delivery and fuel efficiency\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes four spark plugs for multiple replacements or fleet use\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1984 Kawasaki ZX550 GPz Base\u003cbr\u003e\n1985 Honda VF1000R Base\u003cbr\u003e\n1985 Kawasaki ZX550 GPz Base\u003cbr\u003e\n1985 Lamborghini Countach 5000 quattrovalvole\u003cbr\u003e\n1985 Suzuki Sp600 Base\u003cbr\u003e\n1986 Honda VF1000R Base\u003cbr\u003e\n1986 Honda VF500F Interceptor Base\u003cbr\u003e\n1986 Honda VFR700F Interceptor Base\u003cbr\u003e\n1986 Honda VFR750F Interceptor Base\u003cbr\u003e\n1986 Lamborghini Countach 5000 quattrovalvole\u003cbr\u003e\n1986 Lamborghini LM002 Base\u003cbr\u003e\n1987 Honda CBR1000F Hurricane Base\u003cbr\u003e\n1987 Honda VFR700F Interceptor Base\u003cbr\u003e\n1987 Lamborghini Countach 5000 quattrovalvole\u003cbr\u003e\n1987 Lamborghini LM002 Base\u003cbr\u003e\n1988 Honda CBR1000F Hurricane Base\u003cbr\u003e\n1988 Lamborghini Countach 5000 quattrovalvole\u003cbr\u003e\n1988 Lamborghini LM002 Base\u003cbr\u003e\n1989 Lamborghini Countach 25th Anniversary\u003cbr\u003e\n1989 Lamborghini Countach 5000 quattrovalvole\u003cbr\u003e\n1989 Lamborghini LM002 Base\u003cbr\u003e\n1990 Honda CBR1000F Hurricane Base\u003cbr\u003e\n1990 Lamborghini LM002 Base\u003cbr\u003e\n1990 Suzuki DR250 Base\u003cbr\u003e\n1990 Suzuki DR350 Base\u003cbr\u003e\n1990 Suzuki DR350S Base\u003cbr\u003e\n1990 Suzuki DR650S Base\u003cbr\u003e\n1991 Honda CBR1000F Hurricane Base\u003cbr\u003e\n1991 Lamborghini Diablo Base\u003cbr\u003e\n1991 Suzuki DR250 Base\u003cbr\u003e\n1991 Suzuki DR350 Base\u003cbr\u003e\n1991 Suzuki DR350S Base\u003cbr\u003e\n1991 Suzuki DR650S Base\u003cbr\u003e\n1992 Suzuki DR250 Base\u003cbr\u003e\n1992 Suzuki DR350 Base\u003cbr\u003e\n1992 Suzuki DR350S Base\u003cbr\u003e\n1992 Suzuki DR650S Base\u003cbr\u003e\n1992 Yamaha TDM850 Base\u003cbr\u003e\n1993 Honda CBR1000F Base\u003cbr\u003e\n1993 Suzuki DR250 Base\u003cbr\u003e\n1993 Suzuki DR250SE Base\u003cbr\u003e\n1993 Suzuki DR350 Base\u003cbr\u003e\n1993 Suzuki DR350S Base\u003cbr\u003e\n1993 Suzuki DR650S Base\u003cbr\u003e\n1993 Yamaha TDM850 Base\u003cbr\u003e\n1994 Honda CB1000 Base\u003cbr\u003e\n1994 Honda CBR1000F Base\u003cbr\u003e\n1994 Suzuki DR250SE Base\u003cbr\u003e\n1995 Honda CB1000 Base\u003cbr\u003e\n1995 Honda CBR1000F Base\u003cbr\u003e\n1995 Suzuki DR250SE Base\u003cbr\u003e\n1995 Triumph Trophy 1200 Base\u003cbr\u003e\n1995 Triumph Trophy 900 Base\u003cbr\u003e\n1996 Honda CBR1000F Base\u003cbr\u003e\n1996 Kawasaki KLR250 Base\u003cbr\u003e\n1996 Triumph Trophy 1200 Base\u003cbr\u003e\n1996 Triumph Trophy 900 Base\u003cbr\u003e\n1997 Ducati Monster 600 Base\u003cbr\u003e\n1997 Kawasaki KLR250 Base\u003cbr\u003e\n1997 Triumph Trophy 1200 Base\u003cbr\u003e\n1997 Triumph Trophy 900 Base\u003cbr\u003e\n1998 Ducati Monster 600 Base\u003cbr\u003e\n1998 Ducati Monster 600 Dark Base\u003cbr\u003e\n1998 Honda VTR1000 Super Hawk Base\u003cbr\u003e\n1998 Kawasaki KLR250 Base\u003cbr\u003e\n1998 Triumph Trophy 1200 Base\u003cbr\u003e\n1998 Triumph Trophy 900 Base\u003cbr\u003e\n1999 Ducati Monster 600 Base\u003cbr\u003e\n1999 Ducati Monster 600 City Base\u003cbr\u003e\n1999 Ducati Monster 600 Dark Base\u003cbr\u003e\n1999 Ducati Monster 600 Dark City Base\u003cbr\u003e\n1999 Honda VTR1000 Super Hawk Base\u003cbr\u003e\n1999 Kawasaki KLR250 Base\u003cbr\u003e\n1999 Triumph Trophy 1200 Base\u003cbr\u003e\n1999 Triumph Trophy 900 Base\u003cbr\u003e\n2000 Ducati Monster 600 Base\u003cbr\u003e\n2000 Ducati Monster 600 Dark Base\u003cbr\u003e\n2000 Ducati Monster 600 Dark City Base\u003cbr\u003e\n2000 Ducati Monster 600 Metallic Base\u003cbr\u003e\n2000 Honda VTR1000 Super Hawk Base\u003cbr\u003e\n2000 Kawasaki KLR250 Base\u003cbr\u003e\n2000 Triumph Trophy 1200 Base\u003cbr\u003e\n2000 Triumph Trophy 900 Base\u003cbr\u003e\n2001 Ducati Monster 600 Base\u003cbr\u003e\n2001 Ducati Monster 600 Dark Base\u003cbr\u003e\n2001 Ducati Monster 600 Metallic Base\u003cbr\u003e\n2001 Honda VTR1000 Super Hawk Base\u003cbr\u003e\n2001 Kawasaki KLR250 Base\u003cbr\u003e\n2001 Triumph Trophy 1200 Base\u003cbr\u003e\n2001 Triumph Trophy 900 Base\u003cbr\u003e\n2002 Ducati Monster 620s Base\u003cbr\u003e\n2002 Honda VTR1000 Super Hawk Base\u003cbr\u003e\n2002 Kawasaki KLR250 Base\u003cbr\u003e\n2002 Triumph Trophy 1200 Base\u003cbr\u003e\n2003 Honda VTR1000 Super Hawk Base\u003cbr\u003e\n2003 Kawasaki KLR250 Base\u003cbr\u003e\n2003 Triumph Trophy 1200 Base\u003cbr\u003e\n2004 Ducati Monster 620 Capirex Base\u003cbr\u003e\n2004 Ducati Monster 620 Matrix Base\u003cbr\u003e\n2004 Honda VTR1000 Super Hawk Base\u003cbr\u003e\n2004 Kawasaki KLR250 Base\u003cbr\u003e\n2005 Ducati Monster 620 Dark Base\u003cbr\u003e\n2005 Honda VTR1000 Super Hawk Base\u003cbr\u003e\n2005 Kawasaki KLR250 Base\u003cbr\u003e\n2006 Ducati Monster 620 Dark 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