SKU: 90928272367

NGK IX Iridium Spark Plug Box of 4 (TR55IX)

$38.70 $43.00
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Description

NGK IX Iridium Spark Plug Box of 4 (TR55IX)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

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.

  • 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

This Part Fits:

Year Make Model Submodel
2003 Aston Martin DB7 GT
2003 Aston Martin DB7 GTA
2002-2003 Aston Martin DB7 Vantage
2002-2003 Aston Martin DB7 Vantage Volante
1989-2005 Buick Century Custom
1989 Buick Century Estate Wagon
1989-1993,1996-2002,2004-2005 Buick Century Limited
1991-1996 Buick Century Special
2005 Buick Century Special Edition
1994-1996 Buick Commercial Chassis Base
1988-1990 Buick Electra Limited
1988-1990 Buick Electra Park Avenue
1989-1990 Buick Electra Park Avenue Ultra
1988-1990 Buick Electra T-Type
2005-2009 Buick LaCrosse CX
2005-2009 Buick LaCrosse CXL
1988-1991 Buick LeSabre Base
1988-2005 Buick LeSabre Custom
1988-2005 Buick LeSabre Limited
2006-2008 Buick Lucerne CX
2006-2008 Buick Lucerne CXL
2006-2008 Buick Lucerne CXS
2008-2011 Buick Lucerne Super
1991-2005 Buick Park Avenue Base
1991-2005 Buick Park Avenue Ultra
1988-1991 Buick Reatta Base
1998 Buick Regal 25th Anniversary Edition
1990-1996 Buick Regal Custom
1990-1996 Buick Regal Gran Sport
1997-2004 Buick Regal GS
2000 Buick Regal GSE
1990-1996 Buick Regal Limited
1997-2004 Buick Regal LS
2000 Buick Regal LSE
1996 Buick Regal Olympic Gold Edition
2002-2007 Buick Rendezvous CX
2002-2003,2005 Buick Rendezvous CX Plus
2002-2007 Buick Rendezvous CXL
2002-2003 Buick Rendezvous CXL Plus
1995-1999 Buick Riviera Base
1988-1993 Buick Riviera Luxury
1988-1989 Buick Riviera T-Type
1994-1995 Buick Roadmaster Base
1996 Buick Roadmaster Collector's Edition
1994-1995 Buick Roadmaster Estate Wagon
1996 Buick Roadmaster Estate Wagon Collector's Edition
1994-1995 Buick Roadmaster Limited
1996 Buick Roadmaster Limited Collector's Edition
1991 Buick Skylark Base
1989-1998 Buick Skylark Custom
1990-1997 Buick Skylark Gran Sport
1989,1993-1997 Buick Skylark Limited
1990-1991 Buick Skylark Luxury Edition
1996 Buick Skylark Olympic Gold Edition
2005-2006 Buick Terraza CX
2005-2006 Buick Terraza CXL
1993 Cadillac 60 Special Base
1987-1993 Cadillac Allante Base
1993 Cadillac Allante Indianapolis 500 Pace Car
1990-1993 Cadillac Allante Value Leader
1985-1996 Cadillac Commercial Chassis Base
1994-1996 Cadillac Commercial Chassis Brougham
1982-1985,1987-2005 Cadillac DeVille Base
1982-1985 Cadillac DeVille Cabriolet
1994-1999 Cadillac DeVille Concours
1982-1987,1996-1999 Cadillac DeVille d'Elegance
2000-2005 Cadillac DeVille DHS
2000-2005 Cadillac DeVille DTS
2004-2005 Cadillac DeVille Protection Series
1991 Cadillac DeVille Spring Edition
1986-1987,1991-1993 Cadillac DeVille Touring
2006-2011 Cadillac DTS Base
2010-2011 Cadillac DTS Livery
2007-2011 Cadillac DTS Luxury
2008-2011 Cadillac DTS Platinum
2010-2011 Cadillac DTS Premium
1982-1997 Cadillac Eldorado Base
1982-1991 Cadillac Eldorado Biarritz
1982-1985 Cadillac Eldorado Cabriolet
1998-2002 Cadillac Eldorado ESC
1995-2002 Cadillac Eldorado ETC
1993 Cadillac Eldorado Sport
1991 Cadillac Eldorado Spring Edition
1982-1985,1990-1994 Cadillac Eldorado Touring
1999-2000 Cadillac Escalade Base
1987-1992 Cadillac Fleetwood 60 Special
1985-1987 Cadillac Fleetwood 75
1985-1987 Cadillac Fleetwood 75 Formal
1985-1992,1994-1996 Cadillac Fleetwood Base
1982-1985,1994-1996 Cadillac Fleetwood Brougham
1985-1989 Cadillac Fleetwood Brougham Commercial Chassis
1982-1985 Cadillac Fleetwood Brougham d'Elegance
1985,1987-1992 Cadillac Fleetwood d'Elegance
1982-1993 Cadillac Seville Base
1982-1986 Cadillac Seville Elegante
1994-2004 Cadillac Seville SLS
1988-2003 Cadillac Seville STS
2007-2009 Cadillac SRX Base
2007-2010 Cadillac STS Base
2008-2009 Cadillac STS Platinum
2007-2008 Cadillac XLR Base
2008-2009 Cadillac XLR Platinum
1996-2005 Chevrolet Astro Base
1996-2005 Chevrolet Astro LS
1996-2005 Chevrolet Astro LT
2002-2004 Chevrolet Avalanche 2500 Base
2005-2006 Chevrolet Avalanche 2500 LS
2005-2006 Chevrolet Avalanche 2500 LT
1994-1996 Chevrolet Beretta Base
1994-1996 Chevrolet Beretta Z26
1996-1999,2005 Chevrolet Blazer Base
1996-2004 Chevrolet Blazer LS
1996-2001 Chevrolet Blazer LT
1999-2001 Chevrolet Blazer Trailblazer
2001-2005 Chevrolet Blazer Xtreme
2003-2005 Chevrolet Blazer ZR2
1996-1997 Chevrolet C1500 Base
1996-1998 Chevrolet C1500 Cheyenne
1999 Chevrolet C1500 LS
1996-1998 Chevrolet C1500 Silverado
1996-1998 Chevrolet C1500 WT
1996-1999 Chevrolet C1500 Suburban Base
1996-1999 Chevrolet C1500 Suburban LS
1996-1997,1999 Chevrolet C1500 Suburban LT
1996-1997,1999-2000 Chevrolet C2500 Base
1993,1996-1998 Chevrolet C2500 Cheyenne
1999-2000 Chevrolet C2500 LS
1993,1996-1998 Chevrolet C2500 Silverado
1998 Chevrolet C2500 WT
1996-1999 Chevrolet C2500 Suburban Base
1996-1999 Chevrolet C2500 Suburban LS
1996-1997 Chevrolet C2500 Suburban LT
1996-1997,1999-2000 Chevrolet C3500 Base
1996-1998 Chevrolet C3500 Cheyenne
1999-2000 Chevrolet C3500 LS
1996-1998 Chevrolet C3500 Silverado
1995-2002 Chevrolet Camaro Base
1993 Chevrolet Camaro Indianapolis 500 Pace Car
1996-1997 Chevrolet Camaro RS
1993-1997 Chevrolet Camaro Z28
1994-1996 Chevrolet Caprice Classic
1994 Chevrolet Caprice Classic LS
1995-2002 Chevrolet Cavalier LS
2002 Chevrolet Cavalier LS Sport
1995-2002 Chevrolet Cavalier Z24
1994-1996 Chevrolet Corsica Base
1993 Chevrolet Corvette 40th Anniversary Edition
1992-1996 Chevrolet Corvette Base
1996 Chevrolet Corvette Collector's Edition
1996 Chevrolet Corvette Grand Sport
1995 Chevrolet Corvette Indianapolis 500 Pace Car
2005-2009 Chevrolet Equinox LS
2005-2009 Chevrolet Equinox LT
2008-2009 Chevrolet Equinox LTZ
1996-2012 Chevrolet Express 1500 Base
1996-2006 Chevrolet Express 1500 LS
2001-2002,2006 Chevrolet Express 1500 LT
1996-2006 Chevrolet Express 2500 Base
1996-2005 Chevrolet Express 2500 LS
1996-2002 Chevrolet Express 3500 Base
1996-2002 Chevrolet Express 3500 LS
1995 Chevrolet G30 Beauville
1995 Chevrolet G30 Chevy Van
1995 Chevrolet G30 Hi-Cube
1995 Chevrolet G30 Sportvan
2000-2005 Chevrolet Impala Base
2000-2005 Chevrolet Impala LS
2003 Chevrolet Impala LS Sport
2003-2005 Chevrolet Impala Police
1994-1996,2004-2005 Chevrolet Impala SS
1996-1997 Chevrolet K1500 Base
1996-1998 Chevrolet K1500 Cheyenne
1999 Chevrolet K1500 LS
1996-1998 Chevrolet K1500 Silverado
1996-1998 Chevrolet K1500 WT
1996-1999 Chevrolet K1500 Suburban Base
1996-1999 Chevrolet K1500 Suburban LS
1996-1997,1999 Chevrolet K1500 Suburban LT
1996-1997,1999-2000 Chevrolet K2500 Base
1996-1998 Chevrolet K2500 Cheyenne
1999-2000 Chevrolet K2500 LS
1996-1998 Chevrolet K2500 Silverado
1998 Chevrolet K2500 WT
1996-1999 Chevrolet K2500 Suburban Base
1996-1999 Chevrolet K2500 Suburban LS
1996-1997 Chevrolet K2500 Suburban LT
1996-1997,1999-2000 Chevrolet K3500 Base
1996-1998 Chevrolet K3500 Cheyenne
1999-2000 Chevrolet K3500 LS
1996-1998 Chevrolet K3500 Silverado
1995-2001 Chevrolet Lumina Base
1995-1999 Chevrolet Lumina LS
1997-1999 Chevrolet Lumina LTZ
1992-1996 Chevrolet Lumina APV Base
1992 Chevrolet Lumina APV CL
1993-1996 Chevrolet Lumina APV LS
1997-2003 Chevrolet Malibu Base
1997-2006 Chevrolet Malibu LS
2004-2006 Chevrolet Malibu LT
2006 Chevrolet Malibu LTZ
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 90928272367

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4.7 ★★★★★
Based on 6 reviews
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Product Reviews
M
Verified Purchase
Mary C. Lucking
Waukegan, US
★★★★★ 5
PASSED MY INSPECTION! THIS PRODUCT WORKS LIKE A MIRACLE DONT HESITATE TO BUY IT!
Inspection on my car due the end of January! My check engine light was coming on so I checked with a code reader & found it was a P0420. Read about the Catalytic Converter System possibly being in need of replacement or perhaps clogged. I am a woman, and know next to ZERO about cars, but I can read. Did investigate and found that the replacement of a Catalytic Converter system is mad expensive- also found this Moly Cleaner to add to gas tank. I'm not going to lie; I was nervous as I have a Kia Rio 2014 that has a very small gas tank and gets great gas mileage. In reading the consensus seemed to be to add to 1/4 tank of gas and drive fast for good periods of time to blow out the clog (if it was a clog). Did I mention I live in NYC and driving for long periods of time at high speeds can be a problem because of terrible traffic. Anyhow, this Saturday I poured the can into my 1/2 filled tank and hit a parkway near my home early morning. I did drive for 45 miles sometimes at 80mph then 60mph but tried to do it for a good few minutes at a time without getting pulled over. Checked my reader again, and it was not quite ready but the engine light did stay off. Next day, drove to work, stuck in traffic somewhat & never made it over 20mph & checked my reader again- all good to go for inspection. Went last night- my car PASSED and got that sticker in my window- so I am good for another year. The BEST money I have spent all year. Thank you for carrying this product! Saved me thousands! DONT HESITATE TO USE THIS. The hardest part for me was removing the cap on the can!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2026
C
Verified Purchase
CLEVEinCR
Omaha, US
★★★★★ 5
Great stuff
Seemed to work as well as or better than some more expensive catalytic converter cleaners. I put it in while at 1/3 tank and my Check Engine light went out almost immediately once I started driving. My Tundra has almost 230,000 miles and still runs great but was getting a little harder to start after I switched from full synthetic oil to conventional. I’ll never do that again and immediately switched back but the damage was done. Check engine light came on and I had to crank longer to get it started. Adding this Liquid Moly fixed both issues temporarily. I have to wonder if this was used regularly, say every 3 months, if it would clean the catalytic converter more permanently?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025
J
Verified Purchase
Jon.
Phoenix, US
★★★★★ 3
Ehh??
Didn't work for my on my 17 hyundai accent with 90k on it. I poured the whole bottle in with a half tank of gas. And went for a 3 day italian tune up.... no dice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
J
Verified Purchase
Juan Gonzalez
Battle Creek, US
★★★★★ 5
Works great
Follow instructions and it will work. Had a p420 code, caught it early used this. No more code and passed emissions
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
A
Verified Purchase
A regular Joe
Carnegie, US
★★★★★ 5
Nice Filter Wrench for my Volvo V70XC!
Size: 86mm x 16
I was needing a filter wrench for my 2001 Volvo V70XC and couldn't find anything that fit from the local auto parts stores. Not knowing what to expect, I took a chance on this one since most of the reviews were 5 star and the price was exceptional. When I received it, I was quite pleased with the construction and finish. I have a brand new oil filter housing for my Volvo (since the one currently on my car is chewed up from the former owner using slip-jaw pliers or something on it) and the fit is perfect! I have worked as a mechanic my whole life (aircraft & automotive), and spent a couple of years as a technician at an automotive dealership and I can say that the tool looks like it is designed for heavy-duty use. The stamped steel housing is thicker than those found in local auto parts stores and the drive adapter has a thick arc welded bead along the inside of the tool. So, it appears to be made to hold up to some fairly heavy torque. Although the product description states that it is 1/2", the drive adapter is actually made for direct attachment to a 3/8" drive. Perhaps this error stems from the fact that they offer a much larger wrench (118-131mm) and this is a more accurate description of their other offerings. The 3/8" drive adapter works perfectly and a 21mm socket fits nicely on the external hex. Fits with SAE sizes are a mixed bag, though. I was able to attach a 13/16" 12-pt. box-end wrench, but not the opposing open-end. A similarly sized 13/16" 6-pt. socket was extremely tight, so I wouldn't recommend this size and would just go with the 21mm if you had to use the external hex. Otherwise, just use the 3/8" drive adapter for easiest use of this tool. The adapter also incorporates ball detents on all four sides of the internal 3/8" drive, so your ratchet or extension won't easily fall off while in use. Since this tool is made for oil filter removal & installation, I'm sure that it will deliver as promised. I'll post an update after my next oil change and I get a chance to use it and install the new filter housing I have.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 25, 2014

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