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Spark Plug (NGK) for 1974-2020 Aston Martin, Audi, Buick, Cadillac, Chevrolet, DeLorean, Dodge, Eagle, Ford, GMC, Hummer, Isuzu, Jaguar, Mazda, Mercedes-Benz, Mercury, Merkur, Oldsmobile, Panoz, Peugeot, Pontiac, Renault, Saab, & Volvo NEW

$ 14 .32

Product Notes

⚠️ Most jobs typically require 8 of this item.
Gap 0.025"
Iridium IX Spark Plug
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.
Brand: NGK
Condition: New
LIFE
TIME
Lifetime Warranty Included
This part is backed by our industry-leading lifetime warranty. Shop with total confidence.
100%money-back 120-dayreturns OE-gradequality
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Specifications & Info


Attribute Value
Center Electrode Core Material Copper
Center Electrode Design Fine Wire
Center Electrode Insulator Tip Projection 0.16, 4.0
Center Electrode Projection Mid Projection
Center Electrode Tip Material Iridium
Electrical Terminal Type Non-removable Nut
Grade Type Performance
Ground Configuration J-gap
Ground Electrode Core Material Nickel
Ground Electrode Quantity 1
Ground Electrode Tip Design Taper Cut
Ground Electrode Tip Material Nickel
Hex Size 5/8" (16mm)
Insulator Height 2.07, 52.5
Insulator Material Ceramic
Manufacturer Heat Range 5
Material Grade Iridium
Part Number Tr5ix
Pre Gap Size .040, 1.0
Reach 0.689, 17.5
Resistance 5000.0
Resistor Type Yes
Seat Type Tapered
Service Number Tr5ix
Short Style Spark Plug No
Skirt No
Skirt Length 0.0
Stock Number 7397
Thread Diameter 0.551, 14.0
Washer Included No

Vehicle Fitment Guide

This part fits the following vehicles:

Make Models
Aston Martin DB7
Audi V8 Quattro
Buick Allure, Century, Electra, LaCrosse, LeSabre, Rainier, Riviera, Skylark, Somerset, Somerset Regal
Cadillac CTS, Escalade, Escalade ESV, Escalade EXT, SRX, STS, XLR
Chevrolet Avalanche, Avalanche 1500, Camaro, Caprice, Cavalier, Colorado, Corvette, Express 1500, Express 2500, Express 3500, Impala, Lumina, Monte Carlo, S10, Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD, Silverado 1500 HD Classic, Silverado 2500, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500 Classic, Silverado 3500 HD, SS, SSR, Suburban 1500, Suburban 2500, Suburban 3500 HD, Tahoe, Trailblazer, Trailblazer EXT, Vega
DeLorean DMC 12
Dodge Monaco
Eagle Medallion, Premier
Ford Aerostar, Bronco II, Courier, E-150, E-250, E-250 Econoline, E-350 Club Wagon, E-350 Econoline, E-350 Econoline Club Wagon, E-350 Super Duty, Escape, Escort, EXP, F-100, F-150, F-150 Heritage, F-250, Fairmont, Fiesta, Fusion, Granada, LTD, Mustang, Mustang II, Pinto, Probe, Ranger, Taurus, Tempo, Thunderbird, Windstar
GMC Canyon, Envoy, Envoy XL, Envoy XUV, Savana 1500, Savana 2500, Savana 3500, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD, Sierra 1500 HD Classic, Sierra 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD, Sonoma, Yukon, Yukon XL 1500, Yukon XL 2500
Hummer H2, H3, H3T
Isuzu Ascender, Hombre
Jaguar XJ12, XJS
Mazda 6, B2300, B2500, B3000, MPV, Tribute
Mercedes-Benz 190E, 260E, 300CE, 300E, 300SE, 300SEL, 300TE
Mercury Bobcat, Capri, Cougar, LN7, Lynx, Mariner, Marquis, Milan, Sable, Topaz, Zephyr
Merkur Scorpio, XR4Ti
Oldsmobile 98, Calais, Cutlass Calais, Cutlass Ciera, Cutlass Cruiser, Cutlass Supreme, Delta 88, Toronado
Panoz AIV Roadster, Esperante
Peugeot 505, 604
Pontiac Bonneville, Firebird, G8, Grand Am, Grand Prix, GTO, Sunfire
Renault Fuego, R18i
Saab 9-7x
Volvo 262, 264, 265, 760, 780

This is a universal part that fits 4,008 vehicle configurations across 24 makes.

Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Policies

Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Return Policy

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.

Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.
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.

Interchange Parts

Brand Part Number
Omnicraft QSP4

Fits Years: 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Go-Parts Garage · Featured Guide

Choosing the Right Spark Plugs for Your 1984-1991 Buick LeSabre

Your LeSabre's engine changed significantly in 1986—make sure you get the right parts.

Read Full Guide

⚠️ Related Trouble Codes (OBD-II)

50 matching guides

If your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.

P0300
Random Misfire Causes & Fixes
2008-2010 Chevrolet SILVERADO 2500
P0300
Random Misfire Causes and Fixes
2003-2010 Cadillac ESCALADE ESV
P0300
Random Misfire Causes and Fixes
2012-2016 Gmc SIERRA DENALI
P0300
Random Misfire Causes and Fixes
2002-2009 Cadillac ESCALADE EXT
P0300
Random Misfire Causes and Fixes
2000-2007 Chevrolet TAHOE
P0300
Random Misfire Causes & Fixes
2010-2014 Gmc YUKON DENALI
P0300
Random Misfire Causes & Fixes
2004-2008 Gmc YUKON DENALI XL
P0300
Causes & Fixes for Random Misfires
2002-2006 Cadillac ESCALADE EXT 1500
P0300
Random Misfire Causes & Fixes
2001-2008 Chevrolet SILVERADO 3500
P0300
Random Misfire Causes and Fixes
2005-2012 Chevrolet CORVETTE
P0300
Random Misfire Causes and Fixes
2003-2006 Chevrolet SSR
P0300
Random Misfire Causes and Fixes
2000-2007 Gmc YUKON
↑ A single part can trigger multiple related trouble codes. Each guide is vehicle- and code-specific.
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