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Spark Plug - Intake Side (NGK) for 2000-2024 Chrysler, Dodge, Fiat, Hyundai, INFINITI, Jeep, Kia, Mitsubishi, Nissan, Ram, Scion, Suzuki, & Toyota NEW

$ 13 .82
120-DayReturns
LifetimeWarranty
100%Money-Back

Product Notes Read before buying

Position: Intake Side
⚠️ Most jobs typically require 16 of this item.
Gap 0.044"
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
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Specifications & Info


Attribute Value
Center Electrode Core Material Copper
Center Electrode Design Fine Wire
Center Electrode Insulator Tip Projection 0.14, 3.5
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 1.99, 50.5
Insulator Material Ceramic
Manufacturer Heat Range 5
Material Grade Iridium
Part Number Lfr5aix-11
Pre Gap Size .044, 1.1
Reach 1.043, 26.5
Resistance 5000.0
Resistor Type Yes
Seat Type Flat
Service Number Lfr5aix-11
Short Style Spark Plug No
Skirt No
Skirt Length 0.0
Stock Number 4469
Thread Diameter 0.551, 14.0
Washer Included Yes
Washer Type Crush

Vehicle Fitment Guide

This part fits the following vehicles:

Make Models
Chrysler 200, 300, Aspen
Dodge Challenger, Charger, Dakota, Dart, Durango, Ram 1500, Ram 2500, Ram 3500
Fiat 500X
Hyundai Equus, Genesis, Santa Fe, Sonata, Tucson
INFINITI FX35, FX45, G35, I35, M35, M45, Q45, QX4, QX56
Jeep Cherokee, Commander, Compass, Grand Cherokee, Grand Cherokee L, Renegade, Wagoneer
Kia Borrego, Forte, Forte Koup, Forte5, Magentis, Optima, Rondo, Sorento, Sportage
Mitsubishi Mirage
Nissan 350Z, Altima, Armada, Frontier, Maxima, Murano, NV1500, NV2500, NV3500, Pathfinder, Pathfinder Armada, Quest, Sentra, TITAN, X-Trail, Xterra
Ram 1500, 1500 Classic, 2500, 3500, 4500, 5500, Dakota, ProMaster City
Scion tC
Suzuki Equator, SX4, SX4 Crossover
Toyota 4Runner, Camry, FJ Cruiser, Highlander, RAV4, Sienna, Tundra, Venza

This is a universal part that fits 1,846 vehicle configurations across 13 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, in plain English.

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.

Lifetime 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.

Returns (120 Days)

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.
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 QSP6

Fits Years: 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Expert Guides

Spark Plug Replacement Guide for 2005-2010 Dodge Ram 2500 5.7L HEMI

Everything you need to know about the 16 spark plugs in your HEMI engine to keep it running strong.

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 and Fixes
2011-2023 Chrysler 300
P0300
Random Misfire Causes and Fixes
2015-2021 Jeep RENEGADE
P0300
Causes and Fixes for Random Misfires
2007-2012 Hyundai Santa Fe
P0300
Random Misfire Causes and Fixes
2011-2023 Dodge Durango
P0300
Random Misfire Causes and Fixes
2015-2022 Ram ProMaster City
P0300
Random Misfire Causes and Fixes
2015-2019 Ram PROMASTER CITY
P0301
Cylinder 1 Misfire Causes and Fixes
2011-2022 Jeep Grand Cherokee
P0301
Cylinder 1 Misfire Causes and Fixes
2015-2022 Ram ProMaster City
P0301
Cylinder 1 Misfire Causes and Fixes
2011-2023 Dodge Charger
P0301
Cylinder 1 Misfire Causes and Fixes
2016-2018 Fiat 500X
P0301
Cylinder 1 Misfire Causes and Fixes
2015-2019 Ram PROMASTER CITY
P0301
Cylinder 1 Misfire Causes and Fixes
2014-2021 Jeep GRAND CHEROKEE
↑ A single part can trigger multiple related trouble codes. Each guide is vehicle- and code-specific.
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