2003 Infiniti QX4 Ignition Parts

Show items:
Sort by:
  • Spark Plugs
  • Spark Plug Wires
  • Ignition Coils
  • Relays, Sensors, Switches
  • Ignition Lock Cylinders
    • (0 reviews)
      # mpn4254430044
      Infiniti QX4 with One Unit Coil Package with Electronic Ignition with 14 Volt System 2003, Ignition Coil by Spectra Premium®. Spectra Premium ignition coils are designed and produced under a strict TS16949 quality control process. In...
      All ignition coils are durability tested at 100 cycles of thermal shock (-50 to 300° F), to ensure reliability from extreme vibration24 hours salt spray test ensures sensors provide high corrosion resistance
      $23.06
    • (0 reviews)
      # mpn4255133820
      Infiniti QX4 2003, Ignition Coil by Delphi®. Delphi OE technology ignition products are validated to match the vehicles system. OE quality replacement parts for the right fit, form and function. Designed utilizing the latest technology,...
      Designed and endurance tested to resist the common stresses that cause failureEfficient coil design that ensures the power in the coil has a streamlined path to the spark plug
      $48.14
    • (0 reviews)
      # mpn4545072760
      Infiniti QX4 2003, Iridium IX™ Spark Plug by NGK®. Designed for performance enthusiasts who want extreme ignitability, improved throttle response and superior anti-fouling, these spark plugs are a great option for modified engines and...
      Designed for outstanding acceleration, high fuel efficiency, and durabilityEnsure a consistently stable spark
      $6.78
    • (1 review)
      # mpn4252233573
      Infiniti QX4 with 12 Volt System 2003, Tru-Tech™ Ignition Coil by Standard®. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better than advertised. Perfect for your vehicle...
      Standard® T-Series coil on plug assemblies feature copper windings for a strong magnetic field to ensure reliable operationMade from high-quality materials for ultimate durability
      $25.32
    • (0 reviews)
      # mpn4075475806
      Infiniti QX4 2003, Iridium Power™ Spark Plug by Denso®. Iridium Ultimate Endurance and Power - Performance Upgrade with World's Smallest Center Electrode (0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology) & Tapered Tip Patented...
      0.4 mm iridium center electrode, the slimmest in the industryPatented self-cleaning insulator/electrode design
      $6.59
    • (0 reviews)
      # mpn4253164517
      Infiniti QX4 2003, Direct Ignition Coil by Beck Arnley®. Designed utilizing the latest technology, this product by Beck Arnley features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it...
      Provides excellent starting connectionEngineered from premium materials
      $48.54
    • (0 reviews)
      # mpn1802023
      Infiniti QX4 2003, V-Power™ Nickel Spark Plug by NGK®. NGK spark plugs offer higher performance compared to standard plugs. NGK spark plugs feature a V-groove center electrode and concave ground electrode that lowers ignition voltage...
      Lower ignition system voltage requirementsGreater ignitability and performance over conventional spark plugs
      $4.27
    • (1 review)
      # mpn4075482993
      Infiniti QX4 2003, Iridium Spark Plug by Denso®. OE Recommended Iridium Long Life - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap. Denso's patented Iridium alloy is more durable than even Platinum, allowing the center...
      Fine-wire iridium center electrodePlatinum ground electrode
      $8.98
    • (0 reviews)
      # mpn1800362
      Infiniti QX4 2003, G-Power™ Platinum Spark Plug by NGK®. Platinum spark plugs by NGK are designed to improve fuel efficiency, lower emissions, and provide quicker starts while remaining durable under high heat. With 0.6 mm platinum...
      Designed for faster starts and quicker accelerationBetter fuel economy and lower emissions compared to a traditional plug
      $5.64
    • (0 reviews)
      # mpn4252233431
      Infiniti QX4 with Direct Ignition with 12 Volt System 2003, Intermotor™ Ignition Coil by Standard®. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better than advertised....
      Standard Coil-on-Plug assemblies are manufactured from the finest components for optimum performance and a long service life under all operating conditionsNeodymium in the core creates the strongest magnetic field and produces max high voltage output at all speeds
      $37.24
    • (0 reviews)
      # mpn1802020
      Infiniti QX4 2003, Laser Platinum™ Spark Plug by NGK®. Manufactured with a platinum disc welded to the backside of the ground electrode and laser welded platinum center electrode tip, these spark plugs ensure minimal wear on both...
      Provide faster starts and quicker acceleration than a traditional plugEnsure better fuel economy and lower emissions compared to an original plug
      $8.84
    • (0 reviews)
      # mpn4075475804
      Infiniti QX4 2003, Iridium TT™ Spark Plug by Denso®. Ultimate Endurance and Power. 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not...
      Designed to replace your factory spark plugsManufactured to stringent quality standards
      $7.31
    • (0 reviews)
      # mpn4075488003
      Infiniti QX4 2003, Original U-Groove Nickel Spark Plug by Denso®. OE Recommended Resistor Plug with Patented U-Groove Design. Denso's patented U-Groove spark plug enables complete combustion by allowing the spark to fill the gap created...
      100 percent pre-fired to ensure reliable operationCopper core center electrode for superior thermal conductivity
      $3.79
    • (0 reviews)
      # mpn4075482189
      Infiniti QX4 2003, Platinum TT™ Spark Plug by Denso®. Platinum TT - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap. The Platinum TT™ concept originated from Denso's latest original...
      1.1 mm platinum center electrodeTitanium-enhanced alloy ground electrode
      $3.69
    • (0 reviews)
      # mpn4476750053
      Infiniti QX4 2003, Professional™ Rapidfire Platinum Spark Plug by ACDelco®. Designed for today’s most popular autos, as well as several marine applications, ACDelco’s Rapidfire® Platinum Spark Plugs fit engines using conventional...
      Ribless insulator that improves the plug-to-boot sealTapered center wire electrode with a platinum pad reduces the firing diameter and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage
      $4.11
    • (0 reviews)
      # mpn2341148
      Infiniti QX4 2003, Copper Plus Spark Plug by Champion®. As the leaders in precious metal technologies as well as F.I.S.S resistor technology and MLR™ technology, Champion spark plugs provide enhanced ignition and longer life.
      Dependable and durableBuilt to ISO and SAE standards for proven performance
      $1.63
    • (0 reviews)
      # mpn2341144
      Infiniti QX4 2003, Iridium Spark Plug by Champion®. As the leaders in precious metal technologies as well as F.I.S.S resistor technology and MLR™ technology, Champion spark plugs provide enhanced ignition and longer life.
      Champion Iridium - Maximum Performance. Premium Spark PlugIridium center electrode delivers maximum life
      $2.44
    • (0 reviews)
      # mpn4476749960
      Infiniti QX4 2003, Platinum Power™ Spark Plug by Champion®. With a platinum tip welded to a nickel alloy center electrode, these spark plugs provide superior wear characteristics. Combining a thin-wire center electrode with a...
      Double Platinum Power - Premium Spark Plug. More Powerful Performance.Platinum center and ground electrode for greater wear resistance
      $4.67
    • (0 reviews)
      # mpn4254333007
      Infiniti QX4 with 12 Volt System 2003, Direct Ignition Coil by Denso®. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before...
      OE quality parts from top original equipment and aftermarket manufacturerThe finest quality at a great price
      $59.48
    • (0 reviews)
      # mpn4255985464
      Infiniti QX4 2003, Ignition Coil by Hitachi®. This ignition coil is constructed to deliver optimal voltage to the spark plug, for a strong spark and efficient combustion. Precise construction and gold plated connectors ensure maximum...
      Manufactured and tested to original equipment performance specsEfficient spark energy delivery
      $37.67
    • (0 reviews)
      # mpn4495939513
      Infiniti QX4 with 12 Volt System 2003, Ignition Coil by Original Engine Management®. Original Engine Management prides itself on having the best coil coverage of top selling applications currently in the industry. With new applications...
      Made to deliver trouble-free operation for years aheadManufactured with cutting-edge technology
      $24.12
    • (0 reviews)
      # mpn4513331031
      Infiniti QX4 2003, Ignition Coil by Aceon®. 1 piece. Color: Blue. With hardware. Ignition coils produce the high voltage necessary to ignite the air/fuel mixture in the combustion chamber. When not replaced, vehicle could experience no...
      Designed to provide long-lasting service lifeMade utilizing state-of-the-art equipment
      $9.30
    • (0 reviews)
      # mpn1554132
      Infiniti QX4 2003, Spark Plug Tube Seal Set by Fel-Pro®. If you are looking for quality sealing solutions, Fel-Pro offers you various replacement products from seals and bolts to O-Rings and dowel pins. Engineered using the latest...
      Direct OEM replacement for a proper fitEnsures reliable sealing performance
      $14.09
    • (0 reviews)
      # mpn4252255357
      Infiniti QX4 2003, Direct Ignition Coil Boot Kit by Standard®. Multiple Piece Design. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better than advertised. Perfect for your...
      For vehicles that have spark plug wires and direct ignition coilsHeat resistant silicone spark plug boots
      $43.79
    • (0 reviews)
      # mpn4252221585
      Infiniti QX4 with Direct Ignition 2003, Intermotor™ Direct Ignition Coil Boot by Standard®. Multiple Piece Design. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better...
      Coil-on-Plug bootPart is installed directly between the coil and spark plug
      $8.78
    • (0 reviews)
      # mpn4254333538
      Infiniti QX4 2003, Direct Ignition Coil Boot Kit by Denso®. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before you waste...
      OE quality parts from top original equipment and aftermarket manufacturerThe finest quality at a great price
      $72.77
    • (0 reviews)
      # mpn1890147423
      Infiniti QX4 2003, Ignition Coil-on Plug Boot by NGK®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $6.42
    • (0 reviews)
      # mpn4252193675
      Infiniti QX4 with Ignition Coil Stamped # 19005218 2003, Professional™ Direct Ignition Coil Boot by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than...
      Weather tight boot seal for protection against moisture intrusionStainless steel internal spring with resistor to the spark plug
      $12.54
    • (0 reviews)
      # mpn4253164589
      Infiniti QX4 2003, Ignition Coil Boot by Beck Arnley®. Designed utilizing the latest technology, this product by Beck Arnley features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Silicone construction for superior protection and heat resistanceStainless steel conductor springs that protects against corrosion
      $12.26
    • (0 reviews)
      # mpn4562033330
      Infiniti QX4 2003, Direct Ignition Coil Boot by Original Engine Management®. OEM offers the highest quality parts available. With vehicle systems becoming more and more complex, electronic components and sensors must be manufactured to...
      Made to deliver trouble-free operation for years aheadManufactured with cutting-edge technology
      $10.86
    • (0 reviews)
      # mpn4495966877
      Infiniti QX4 2003, Ignition Coil Connector by Dorman®. Dorman offers a comprehensive line of Ignition Coil Connectors for a wide range of applications. All Dorman Ignition Coil Connectors are constructed of high-quality materials for...
      Vehicle try-on testing has been conducted on this part to ensure a trouble-free performanceEasy installationjust splice in the new socket to your existing wiring
      $12.72
    • (0 reviews)
      # mpn53650228
      Infiniti QX4 2003, Intermotor™ Ignition Knock Detonation Sensor by Standard®. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better than advertised. Perfect for your...
      Standard knock sensors are designed to respond to knock frequencies up to 1000 Hz accommodating shifts in engine knock frequency making it a more flexible sensor responding to correct engine knock over a broad range of vehicle conditionsManufacturing processes include an automated data acquisition system to continuously monitor the sensor output to ensure that it responds with appropriate voltage output at the specified frequency range
      $97.26
    • (0 reviews)
      # mpn2478803
      Infiniti QX4 2003, Ignition Knock Detonation Sensor by Delphi®. Manufactured to meet or exceed OE requirements. Delphi Knock Sensors help maximize engine performance with all fuels. Delphi Knock Sensors prevent against engine damage...
      Extensive coverageManufactured to meet or exceed OE requirements and testing
      $95.77
    • (0 reviews)
      # mpn355127
      Infiniti QX4 2003, Ignition Knock Detonation Sensor by Beck Arnley®. Designed utilizing the latest technology, this product by Beck Arnley features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Used to detect engine knocking and to retard the ignition correspondingly in order to prevent engine damageSensor mounted near the cylinder bores in the cylinder block
      $92.06
    • (0 reviews)
      # mpn4495921666
      Infiniti QX4 Manufactured Before July 2003, Ignition Knock Detonation Sensor by FAE®. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need...
      OE quality parts from top original equipment and aftermarket manufacturersExpertly made from premium materials
      $62.57
    • (0 reviews)
      # mpn53649802
      Infiniti QX4 2003, Intermotor™ Ignition Starter Switch by Standard®. Genuine Intermotor Quality. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better than advertised....
      Standard complete line of ignition switches are constructed with the finest materials to ensure proper fit and function every timeStandard switches are designed using copper alloy conductors to ensure superior electrical conductivity with low resistive losses
      $33.26
    • (0 reviews)
      # mpn444925
      Infiniti QX4 2003, Ignition Starter Switch by Beck Arnley®. Designed utilizing the latest technology, this product by Beck Arnley features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...
      OE quality products from top original equipmentTop quality materials
      $25.56
    • (0 reviews)
      # mpn4495966899
      Infiniti QX4 2003, Ignition Lock Key by Dorman®. Ignition Lock Keys have a transponder chip embedded in the head of the key that allows for radio transmission between the key and vehicle. New keys with the transponder chip will be cut...
      All keys are shipped precut from the manufacturerNo additional programming fees required
      $57.42
    • (0 reviews)
      # mpn2352749
      Infiniti QX4 2003, Ignition Switch by Original Equipment®. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before you waste...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $50.16
    • (0 reviews)
      # mpn2046361483
      Infiniti QX4 2003, Copper Spark Plug by Autolite®. With Resistor. These spark plugs by Autolite are specially designed and manufactured to ensure quick starts, dependable performance, and smooth acceleration. The products are made of...
      Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)Multi-rib insulator reduces danger of "flash-over"
      $1.86
    • (4 reviews)
      # 803933312
      Infiniti QX4 2003, PlasmaCore™ Inconel Electrode Pulse Nickel Spark Plugs by Pulstar®. With Resistor. Inconel-electrode Pulse Plug. Designed specifically for most popular vehicles, PlasmaCore™ Inconel Electrode Pulse Plug provides...
      Increased horsepowerBetter torque
      $14.95 - $89.70
    • (0 reviews)
      # mpn1177915427
      Infiniti QX4 2003, Performance Nickel Spark Plug by Nitrode®. The Nitrode™ spark plugs are positioned to be the world's "greenest" most environmentally friendly spark plugs on the planet. Reducing fuel consumption and emissions while...
      The Nitrode™ is made with a proprietary ceramic exclusively used for this spark plugThis unique ceramic is over 10% harder than any ceramic known today
      $8.09
    • (0 reviews)
      # mpn1816038
      Infiniti QX4 2003, STI Direct Ignition Coil by Karlyn STI®. The ignition coil is one of the most important part in the ignition system. Ignition Coil aimed to provide the needed high voltage and ignition energy for generating the high...
      Place directly on the spark plugHigh temperature resistant
      $28.74
    • (0 reviews)
      # mpn2870416500
      Infiniti QX4 2003, Prestolite ProConnect Direct Ignition Coil by Accel®. This superior ignition coil is painstakingly designed to improve spark energy and provide ultra high efficiency. Engineered with great care, it delivers the...
      Designed to provide original equipment fit, form and functionManufactured using high quality materials and processes
      $48.67
    • (0 reviews)
      # mpn2870416412
      Infiniti QX4 2003 Prestolite ProConnect™ Coil-on-Plug Boots by Accel®. Designed utilizing the latest technology, this product by Accel features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Direct-fit replacementHighly specialized silicone-magnetic steel cores and optimized windings
      $91.76
    • (0 reviews)
      # mpn4511855795
      Infiniti QX4 2003, Iridium Spark Plugs by Autolite®. With Resistor. OE Style. These spark plugs are one of the brand's most technologically advanced spark plugs ever. With an iridium-enhanced 0.6 mm finewire design and proprietary...
      Iridium-enhanced center electrodePatented, platinum sidewire technology
      $6.66
    • (0 reviews)
      # 959912871
      Infiniti QX4 2003, Platinum Spark Plugs by Autolite®. With Resistor. Provides a center wire platinum firing tip. Benefits include: reduced gap erosion, fewer misfires, better performance and more durability. Guaranteed for 4 years.
      High nickel alloy side electrode maintains precise gapFull platinum tip assures virtually no gap erosion
      $3.13 - $5.58
    • (2 reviews)
      # 898239254
      Infiniti QX4 2003, Iridium Yttrium Performance Spark Plug by Brisk®. Iridium Yttrium Performance Spark Plug are the best solution for high performance and racing engines. Iridium Yttrium Spark Plugs provide many unique and beneficial...
      Iridium is 6X harder & 8X stronger than platinumLong lasting OEM performance replacement
      $9.91 - $13.50
    • (3 reviews)
      # mpn4498087305
      Infiniti QX4 2003, Premium EVO Nickel Spark Plug by Brisk®. Unique Spark Plug Produced Patented Laser Technology Unique igniter auxiliary electrode at the tip of the insulator formed using the patented technology of laser deposition....
      Perfect ignition of fuel mixture in engine cylindersUnrestricted flame throughout combustion chamber
      $13.50
    • (1 review)
      # mpn4498087300
      Infiniti QX4 2003, Premium Racing LGS Spark Plug by Brisk®. Brisk Premium LGS spark plug has been developed after two-year cooperation with Lamborghini Morori Marini. Brisk Premium LGS spark plug utilizes extremely long glide-spark and...
      High-Potential Semi-Surface discharge equals more powerDischarge at the point of richest mixture in 360° perimeter
      $12.60
    • (0 reviews)
      # mpn4498087333
      Infiniti QX4 2003, Racing Copper Alloy Electrode Spark Plug by Brisk®. The center electrode is from nickel alloy filled with copper core with high heat conductivity what enables to optimize thermal balance of active parts of spark plug....
      Manufactured to meet or exceed strict quality requirementsMade from high-quality materials for ultimate durability
      $11.70
    • (0 reviews)
      # mpn4517152112
      Infiniti QX4 with Distributorless Ignition 2003, Ignition Coil by NGK®. AIn our online store you can get this superior replacement product and take advantage of its impeccable design. Carefully engineered to OE specifications, it...
      Designed to meet OE standardsMade from superior materials
      $60.17
    • (0 reviews)
      # mpn4524514792
      Infiniti QX4 2003, Spark Plug Tube Seal Set by Apex Auto®. Designed utilizing the latest technology, this product by Apex Auto features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it...
      Quick accurate delivery with excellent fill-rateExcellent inventory availability
      $7.36
    • (0 reviews)
      # 1282509359
      Infiniti QX4 2003, Spark Plug by Autolite®. Thanks to their platinum-to-platinum firing, these spark plugs virtually eliminate gap erosion, reduce misfires, and provide improved durability and prolonged service life compared to standard...
      High nickel alloy side electrodeFull platinum tips
      $6.16 - $10.28
    • (0 reviews)
      # 1066671505
      Universal Ground Strap by AllStar Performance®. The number one problem with electrical systems is often related to poor ground connections. Perfect for various 6 or 12 volt grounding applications. Flexible, braided copper 12 gauge...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $7.59 - $8.69
    • (0 reviews)
      # mpn4524505305
      Infiniti QX4 2003, Direct Ignition Coil by World Source One®. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before you waste...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $42.57
    • (0 reviews)
      # mpn4463245004
      Infiniti QX4 2003, Direct Ignition Coil Boot by Prenco®. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before you waste your...
      Built to match your exact requirementsOE quality parts from top original equipment and aftermarket manufacturers
      $21.24
    • (0 reviews)
      # mpn4498087115
      Infiniti QX4 2003, Racing Spark Plug by Brisk®. Brisk Silver Racing Spark Plugs are the best solution for high performance and racing engines. Silver Spark Plugs provide many unique and beneficial characteristics, Silver is taking...
      Silver is the best conductor of thermal heat & electricitySuperior ignition ability increases engine power
      $9.91
    • (0 reviews)
      # mpn4524512158
      Infiniti QX4 2003, Ignition Coil Set by Spectra Premium®. Spectra Premium ignition coils are designed and produced under a strict TS16949 quality control process. In our online store you can get this superior replacement product and...
      All ignition coils are durability tested at 100 cycles of thermal shock (-50 to 300° F), to ensure reliability from extreme vibration24 hours salt spray test ensures sensors provide high corrosion resistance
      $115.34


    Guides & Articles

    Useful articles fast to read and guides easy to understand written by mechanics and car enthusiasts to turn your shopping experience with CARiD into a pleasure

    • July 04, 2018
      When Is It Time To Replace My Spark Plugs?
      Spark plugs are a key ingredient of gasoline engines when it comes to serving up a dish of solid power. More specifically, they conduct electricity derived from the...
    • August 10, 2014
      Auto Parts: Dealer vs. Aftermarket
      The question of whether to buy parts from an automotive dealer vs. ones from aftermarket manufacturers is as age-old as the automobile itself. Below, we'll take a look...
    • July 03, 2014
      Performing a Basic Engine Tune Up
      This article will guide you through a generic tune up on most any car or light duty gasoline-powered vehicle built within the last 20 years or so. We will presume that...

    Popular Products



    Related 2003 Infiniti QX4 Pages


    Low Prices Price match guarantee
    Guaranteed Fitment Always the correct part
    In-House Experts We know our products
    Easy Returns Quick & Hassle Free

    All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.

    SECURE SHOPPING