NGK Iridium IX Spark Plug Part Number 5545 – High-Performance Automotive Spark Plug for Lamborghini, Ducati, Honda, Kawasaki, KTM, Suzuki, Yamaha

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. NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. LAMBORGHINI COUNTACH 1989-85, DIABLO 1991, LM002 1990-86; M/C - 2005-1985 HONDA, 2005-1983 KAWASAKI, 1992 KTM, 1995-1985 SUZUKI, 1993-1992 YAMAHA

• RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
• Trivalent metal plating for superior anti-corrosion and anti-seizing properties
• Outstanding acceleration, high fuel efficiency and durability
• Fine iridium tip ensures durable and consistent spark

The 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.

Features:

• Designed for high-performance and modified vehicles to enhance engine output

• Iridium tip provides outstanding ignitability and long-lasting durability

• Tapered cut ground electrode improves starting, idle, and throttle response

• Trivalent metal plating offers superior anti-corrosion and anti-seizing properties

• Compatible with a wide range of high-performance cars and motorcycles from various brands

• Engineered for consistent spark delivery and fuel efficiency

• Includes four spark plugs for multiple replacements or fleet use

Fitment:
1984 Kawasaki ZX550 GPz Base
1985 Honda VF1000R Base
1985 Kawasaki ZX550 GPz Base
1985 Lamborghini Countach 5000 quattrovalvole
1985 Suzuki Sp600 Base
1986 Honda VF1000R Base
1986 Honda VF500F Interceptor Base
1986 Honda VFR700F Interceptor Base
1986 Honda VFR750F Interceptor Base
1986 Lamborghini Countach 5000 quattrovalvole
1986 Lamborghini LM002 Base
1987 Honda CBR1000F Hurricane Base
1987 Honda VFR700F Interceptor Base
1987 Lamborghini Countach 5000 quattrovalvole
1987 Lamborghini LM002 Base
1988 Honda CBR1000F Hurricane Base
1988 Lamborghini Countach 5000 quattrovalvole
1988 Lamborghini LM002 Base
1989 Lamborghini Countach 25th Anniversary
1989 Lamborghini Countach 5000 quattrovalvole
1989 Lamborghini LM002 Base
1990 Honda CBR1000F Hurricane Base
1990 Lamborghini LM002 Base
1990 Suzuki DR250 Base
1990 Suzuki DR350 Base
1990 Suzuki DR350S Base
1990 Suzuki DR650S Base
1991 Honda CBR1000F Hurricane Base
1991 Lamborghini Diablo Base
1991 Suzuki DR250 Base
1991 Suzuki DR350 Base
1991 Suzuki DR350S Base
1991 Suzuki DR650S Base
1992 Suzuki DR250 Base
1992 Suzuki DR350 Base
1992 Suzuki DR350S Base
1992 Suzuki DR650S Base
1992 Yamaha TDM850 Base
1993 Honda CBR1000F Base
1993 Suzuki DR250 Base
1993 Suzuki DR250SE Base
1993 Suzuki DR350 Base
1993 Suzuki DR350S Base
1993 Suzuki DR650S Base
1993 Yamaha TDM850 Base
1994 Honda CB1000 Base
1994 Honda CBR1000F Base
1994 Suzuki DR250SE Base
1995 Honda CB1000 Base
1995 Honda CBR1000F Base
1995 Suzuki DR250SE Base
1995 Triumph Trophy 1200 Base
1995 Triumph Trophy 900 Base
1996 Honda CBR1000F Base
1996 Kawasaki KLR250 Base
1996 Triumph Trophy 1200 Base
1996 Triumph Trophy 900 Base
1997 Ducati Monster 600 Base
1997 Kawasaki KLR250 Base
1997 Triumph Trophy 1200 Base
1997 Triumph Trophy 900 Base
1998 Ducati Monster 600 Base
1998 Ducati Monster 600 Dark Base
1998 Honda VTR1000 Super Hawk Base
1998 Kawasaki KLR250 Base
1998 Triumph Trophy 1200 Base
1998 Triumph Trophy 900 Base
1999 Ducati Monster 600 Base
1999 Ducati Monster 600 City Base
1999 Ducati Monster 600 Dark Base
1999 Ducati Monster 600 Dark City Base
1999 Honda VTR1000 Super Hawk Base
1999 Kawasaki KLR250 Base
1999 Triumph Trophy 1200 Base
1999 Triumph Trophy 900 Base
2000 Ducati Monster 600 Base
2000 Ducati Monster 600 Dark Base
2000 Ducati Monster 600 Dark City Base
2000 Ducati Monster 600 Metallic Base
2000 Honda VTR1000 Super Hawk Base
2000 Kawasaki KLR250 Base
2000 Triumph Trophy 1200 Base
2000 Triumph Trophy 900 Base
2001 Ducati Monster 600 Base
2001 Ducati Monster 600 Dark Base
2001 Ducati Monster 600 Metallic Base
2001 Honda VTR1000 Super Hawk Base
2001 Kawasaki KLR250 Base
2001 Triumph Trophy 1200 Base
2001 Triumph Trophy 900 Base
2002 Ducati Monster 620s Base
2002 Honda VTR1000 Super Hawk Base
2002 Kawasaki KLR250 Base
2002 Triumph Trophy 1200 Base
2003 Honda VTR1000 Super Hawk Base
2003 Kawasaki KLR250 Base
2003 Triumph Trophy 1200 Base
2004 Ducati Monster 620 Capirex Base
2004 Ducati Monster 620 Matrix Base
2004 Honda VTR1000 Super Hawk Base
2004 Kawasaki KLR250 Base
2005 Ducati Monster 620 Dark Base
2005 Honda VTR1000 Super Hawk Base
2005 Kawasaki KLR250 Base
2006 Ducati Monster 620 Dark Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 4