2003 Hummer H2 Ignition Parts

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  • Spark PlugsSpark Plugs
  • Spark Plug WiresSpark Plug Wires
  • Ignition CoilsIgnition Coils
  • Relays, Sensors, SwitchesRelays, Sensors, Switches
  • Ignition Lock CylindersIgnition Lock Cylinders
    • Spectra Premium® - Ignition Coil
      (0 reviews)
      # 57180944
      Hummer H2 with Distributorless Ignition 2003, Ignition Coil 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...
      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
      $15.28 - $19.62
    • Delphi® - Ignition Coil
      (0 reviews)
      # 24581228
      Hummer H2 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
      $26.94 - $36.71
    • ACDelco® - Professional™ Spark Plug Wire Set
      (0 reviews)
      # 73597215
      Hummer H2 2003, Professional™ Spark Plug Wire Set by ACDelco®. Built to match the Original Equipment in length and fit, ACDelco Professional Ignition Wire Sets also offer a performance advantage over many aftermarket products.
      Wire conductor, wire length and diameter help provide maximum spark delivery and protectionSpark plug distributor boot shape and materials provide proper fit, installation and water-tight seal
      $43.97 - $47.45
    • NGK® - Iridium IX™ Spark Plug
      (0 reviews)
      # mpn1747671
      Hummer H2 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
      $6.42
    • Delphi® - Spark Plug Wire Set
      (0 reviews)
      # 603732132
      Hummer H2 2003, Spark Plug Wire Set by Delphi®. Pre-greased spark plug boots for quicker installation. Delphi packard-marked cable for oe component confirmation. OE boots, terminals, and lead lengths for no hassle installation....
      Pre-greased spark plug boots for quicker installationDelphi packard marked cable - OE component confirmation
      $41.50 - $47.72
    • Standard® - Tru-Tech™ Ignition Coil
      (0 reviews)
      # 223618466
      Hummer H2 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...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $20.70 - $21.37
    • Denso® - Iridium Power™ Spark Plug
      (2 reviews)
      # mpn4075455507
      Hummer H2 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
      $5.57
    • Standard® - Spark Plug Wire Set
      (0 reviews)
      # 207455586
      Hummer H2 2003, Spark Plug Wire Set by Standard®. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $20.30 - $84.02
    • NGK® - V-Power™ Nickel Spark Plug
      (0 reviews)
      # mpn1747634
      Hummer H2 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
      $1.62
    • Standard® - Ignition Coil
      (0 reviews)
      # 44943105
      Hummer H2 with 12 Volt System 2003, 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 and lifestyle,...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $26.83 - $43.09
    • Denso® - Iridium Spark Plug
      (0 reviews)
      # mpn4075472546
      Hummer H2 2003, Iridium Spark Plug by Denso®. Iridium Long Life Plug - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap. Denso's patented Iridium alloy is more durable than even Platinum, allowing the center electrode to...
      Fine-wire iridium center electrodePlatinum ground electrode
      $5.25
    • NGK® - G-Power™ Platinum Spark Plug
      (1 review)
      # mpn1725561
      Hummer H2 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 alloy...
      Designed for faster starts and quicker accelerationBetter fuel economy and lower emissions compared to a traditional plug
      $2.53
    • Standard® - Pro Series™ Spark Plug Wire Set
      (0 reviews)
      # 99006509
      Hummer H2 2003, Pro Series™ Spark Plug Wire Set by Standard®. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle,...
      The design of this set strictly follows the original specifications set by OEManufactured using OE-Style spark plug and distributor boots
      $28.02 - $33.00
    • NGK® - Laser Platinum™ Spark Plug
      (0 reviews)
      # mpn1775381
      Hummer H2 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
      $7.41
    • NGK® - Laser Iridium™ Spark Plug
      (0 reviews)
      # mpn1775363
      Hummer H2 2003, Laser Iridium™ Spark Plug by NGK®. Often specified as original equipment, NGK Laser Iridium spark plugs are the best combination of performance and longevity. Iridium tip is six (6) times harder than platinum providing...
      Designed for faster starts and quicker accelerationBetter fuel economy and lower emissions
      $7.02
    • Denso® - Iridium TT™ Spark Plug
      (0 reviews)
      # mpn4075455028
      Hummer H2 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 what...
      Designed to replace your factory spark plugsManufactured to stringent quality standards
      $5.69
    • Denso® - Platinum TT™ Spark Plug
      (0 reviews)
      # mpn4075456600
      Hummer H2 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
      $2.53
    • ACDelco® - Professional™ Double Platinum Spark Plug
      (1 review)
      # mpn4486063143
      Hummer H2 with Tier 2 Phase-Out Federal Emission System 2003, Professional™ Double Platinum Spark Plug by ACDelco®. Premium aftermarket plugs, and a high quality replacement ideal for many vehicles on the road today. With a copper...
      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
      $5.38
    • ACDelco® - Professional™ Rapidfire Platinum Spark Plug
      (0 reviews)
      # mpn4486063414
      Hummer H2 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
      $3.26
    • Motorcraft® - Copper Spark Plug
      (0 reviews)
      # mpn1404088
      Hummer H2 2003, Copper Spark Plug by Motorcraft®. 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 time...
      Direct OEM replacementRecommended by Ford Motor Company
      $1.72
    • Champion® - Double Platinum Spark Plug
      (0 reviews)
      # mpn2341128
      Hummer H2 2003, Double Platinum Spark Plug by Champion®. With platinum fine wire welded onto the nickel alloy center electrode and a platinum pad welded to the ground electrode, these products provide long-lasting service life and...
      Double Platinum Power - Premium Spark Plug. More Powerful Performance.Platinum center and ground electrode for greater wear resistance
      $4.65
    • Champion® - Iridium Spark Plug
      (0 reviews)
      # mpn4476749941
      Hummer H2 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
      $5.61
    • Champion® - Nickel Spark Plug
      (0 reviews)
      # mpn2326798
      Hummer H2 2003, Nickel Spark Plug by Champion®. Designed and manufactured to meet or exceed OE standards and specifications, this spark plug by Champion ensure fast engine start-up and smooth acceleration. The product is made of premium...
      Copper Plus - Dependable Performance.Copper core center electrode allows for accurate control of heat range for longer life
      $1.59
    • Champion® - Platinum Power™ Spark Plug
      (0 reviews)
      # mpn2341107
      Hummer H2 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 V-trimmed...
      Platinum Power- Premium Spark Plug. Powerful Performance.Platinum center electrode for long life
      $2.25
    • Denso® - Spark Plug Wire Set
      (0 reviews)
      # 55212181
      Hummer H2 2003, Spark Plug Wire Set by Denso®. Complete Ignition Wire Set. Designed with precision and functionality in mind this product ensures ultimate durability and provides the highest level of quality. This product is...
      Improved coil efficiency reduces the need to generate high voltageDriving circuit is integrated into top of coil
      $30.01 - $31.33
    • NGK® - Spark Plug Wire Set
      (0 reviews)
      # 1027788277
      Hummer H2 2003, Spark Plug Wire Set by NGK®. NGK Wire Sets are built to meet stringent OEM tolerances for a variety of vehicles. They utilize a construction method known as "variable pitch" wire winding to create resistance to radio...
      Superior firing and fuel savingsOutstanding durability
      $40.73 - $40.86
    • ACDelco® - GM Original Equipment™ Spark Plug Wire
      (0 reviews)
      # 603724390
      Hummer H2 2003, GM Original Equipment™ Spark Plug Wire by ACDelco®. Built to match the Original Equipment in length and fit, ACDelco GM OE Ignition Wire Sets also offer a performance advantage over many aftermarket products.
      ACDelco GM OE wire sets are designed to be like Original Equipment in critical areas such as cable length and diameter, terminal design and insulator positionProvide a high degree of Radio Frequency Interference (RFI) suppression
      $7.62 - $8.27
    • ACDelco® - GM Original Equipment™ Spark Plug Wire Set
      (0 reviews)
      # 603735220
      Hummer H2 2003, GM Original Equipment™ Spark Plug Wire Set by ACDelco®. Built to match the Original Equipment in length and fit, ACDelco Professional Ignition Wire Sets also offer a performance advantage over many aftermarket products.
      Designed to match Original Equipment wire sets in critical areas such as cable length and diameter, terminal design and insulator positionHave broad coverage available for most vehicles on the road today from 1980 to present
      $52.34 - $59.31
    • Prestolite® - Spark Plug Wire Set
      (0 reviews)
      # 1499743071
      Hummer H2 2003, Spark Plug Wire Set by Prestolite®. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality. Designed utilizing the latest technology,perfect...
      Built to match your exact requirementsOE quality parts from top original equipment and aftermarket manufacturers
      $45.58 - $52.45
    • Denso® - Direct Ignition Coil
      (0 reviews)
      # 85814763
      Hummer H2 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 you...
      OE quality parts from top original equipment and aftermarket manufacturerThe finest quality at a great price
      $48.10 - $54.20
    • NGK® - Coil Near Plug Ignition Coil
      (0 reviews)
      # mpn4517151944
      Hummer H2 with Distributorless Ignition 2003, Coil Near Plug 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...
      Designed to meet OE standardsMade from superior materials
      $35.97
    • NGK® - Ignition Coil
      (0 reviews)
      # mpn4517151193
      Hummer H2 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 exactly...
      Designed to meet OE standardsMade from superior materials
      $50.15
    • ACDelco® - GM Original Equipment™ Ignition Coil
      (0 reviews)
      # 1351893006
      Hummer H2 2003, GM Original Equipment™ Ignition Coil by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $37.53 - $74.50
    • Original Engine Management® - Ignition Coil
      (0 reviews)
      # 1351913016
      Hummer H2 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
      $22.11 - $22.74
    • Aceon® - Ignition Coil
      (0 reviews)
      # mpn4513331303
      Hummer H2 2003, Ignition Coil by Aceon®. 1 piece. Color: Black. 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 or...
      Designed to provide long-lasting service lifeMade utilizing state-of-the-art equipment
      $29.48
    • Prenco® - Ignition Coil
      (0 reviews)
      # mpn4256498908
      Hummer H2 2003, Ignition Coil by Prenco®. Prenco’s precision manufactured Ignition Coils are constructed of premium components and are designed to exactly match OE coil specifications. Prenco Ignition Coils are rigorously tested in...
      Prenco’s precision manufactured Ignition Coils are constructed of premium components.Prenco Ignition Coils are rigorously tested in house to meet or exceed SAE J973, ISO 19813, and/or ISO 13476 requirements.
      $59.05
    • WAI Global® - Ignition Coil
      (0 reviews)
      # mpn4256315620
      Hummer H2 2003, Ignition Coil by WAI Global®. Designed utilizing the latest technology, this product by WAI Global features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      100% New100% Tested to OE Specs (form, fit, function)
      $21.77
    • ACDelco® - GM Original Equipment™ Ignition Switch
      (0 reviews)
      # mpn888509237
      Hummer H2 2003, GM Original Equipment™ Ignition Switch by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $22.08
    • ACDelco® - GM Original Equipment™ Ignition Coil Lead Wire
      (0 reviews)
      # 603794165
      Hummer H2 2003, GM Original Equipment™ Ignition Coil Lead Wire by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $40.86 - $71.91
    • ACDelco® - GM Original Equipment™ Spark Plug Wire Heat Shield
      (0 reviews)
      # mpn1279841930
      Hummer H2 2003, GM Original Equipment™ Spark Plug Wire Heat Shield by ACDelco®. Designed with precision and functionality in mind this product ensures ultimate durability and provides the highest level of quality. This product is...
      Provide a high degree of Radio Frequency Interference (RFI) suppression.Are designed to offer fit, form and function for optimum performance.
      $4.40
    • ACDelco® - GM Original Equipment™ Ignition Coil Connector
      (0 reviews)
      # mpn915017144
      Hummer H2 2003, GM Original Equipment™ Ignition Coil Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $42.63
    • ACDelco® - GM Original Equipment™ Ignition Coil Mounting Bracket
      (0 reviews)
      # 86099320
      Hummer H2 2003, GM Original Equipment™ Ignition Coil Mounting Bracket by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $16.78 - $41.54
    • ACDelco® - GM Original Equipment™ Ignition Coil Mounting Bracket Bolt
      (0 reviews)
      # mpn898005635
      Hummer H2 2003, GM Original Equipment™ Ignition Coil Mounting Bracket Bolt by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $4.48
    • Standard® - Ignition Knock Detonation Sensor
      (0 reviews)
      # mpn44353193
      Hummer H2 2003, 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 vehicle and lifestyle,...
      Automated data acquisition system continuously monitors sensor output to ensure response with appropriate voltage at specified frequency ratePrecision-machined sensor body tunes resonant frequency to engine knock frequency
      $38.10
    • Standard® - Tru-Tech™ Ignition Knock Detonation Sensor
      (0 reviews)
      # mpn1471233
      Hummer H2 2003, Tru-Tech™ 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 vehicle and...
      Each Knock Sensor is a direct-fit OE replacement that ensures ease of installationHigh-quality materials withstand extreme conditions
      $32.84
    • ACDelco® - GM Original Equipment™ Diesel Glow Plug Connector
      (0 reviews)
      # mpn767362064
      Hummer H2 2003, GM Original Equipment™ Diesel Glow Plug Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $16.23
    • ACDelco® - GM Original Equipment™ Ignition Knock Detonation Sensor
      (0 reviews)
      # mpn914885833
      Hummer H2 2003, GM Original Equipment™ Ignition Knock Detonation Sensor by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $43.80
    • ACDelco® - Professional™ Ignition Relay
      (0 reviews)
      # mpn767361938
      Hummer H2 2003, Professional™ Ignition Relay by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $7.51
    • Delphi® - Ignition Knock Detonation Sensor
      (0 reviews)
      # mpn2478434
      Hummer H2 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 from...
      Extensive coverageManufactured to meet or exceed OE requirements and testing
      $39.18
    • Beck Arnley® - Ignition Knock Detonation Sensor
      (0 reviews)
      # mpn358818
      Hummer H2 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
      $39.86
    • Maneki® - Ignition Knock Detonation Sensor
      (0 reviews)
      # mpn4545775904
      Hummer H2 2003, Ignition Knock Detonation Sensor by Maneki®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
      Made to deliver second to none quality and absolute reliabilityBuilt to provide the ultimate in reliability and strength
      $6.94
    • Standard® - Ignition Lock Cylinder
      (0 reviews)
      # 840473339
      Hummer H2 2003, Ignition Lock Cylinder by Standard®. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Each ignition switch is a direct-fit replacement electrically operated switch that replaces damaged OE units restoring ignition functionEach ignition switch is tested to verify both mechanical and electrical switching performance
      $38.02 - $45.09
    • Standard® - Ignition Starter Switch
      (0 reviews)
      # mpn44419399
      Hummer H2 2003, Ignition Starter Switch by Standard®. Designed utilizing the latest technology, this product by Standard features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      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
      $17.63
    • ACDelco® - GM Original Equipment™ Ignition Lock Cylinder
      (0 reviews)
      # mpn914972444
      Hummer H2 2003, GM Original Equipment™ Ignition Lock Cylinder by ACDelco®. With 4 Position Wingless Flat Face Knob. There is No Reverse Rotation to the Accessory Postion. Designed utilizing the latest technology, this product by...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $31.26
    • Dorman® - Ignition Lock Housing
      (0 reviews)
      # mpn4495966847
      Hummer H2 2003, Ignition Lock Housing by Dorman®. Dorman’s Ignition Lock Housing includes a high-quality passlock sensor that gets your vehicle up and running after a passlock sensor failure. Replacement reestablishes communication...
      Restores security system to proper operation; turns off flashing security lightDurable metal construction
      $81.95
    • Dorman® - Ignition Starter Switch
      (0 reviews)
      # mpn4495966925
      Hummer H2 2003, Ignition Starter Switch by Dorman®. An essential replacement item, Dorman's Ignition Power Switch enables your engine to turn over upon startup, restoring drivability. It also unlocks the power accessories. The Switch is...
      This part has undergone a rigorous quality inspection to ensure high qualityEasy to install
      $14.70
    • Dorman® - Ignition Knock Detonation Sensor Seal
      (0 reviews)
      # mpn4562002667
      Hummer H2 2003, Ignition Knock Detonation Sensor Seal by Dorman®. 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...
      High quality at an affordable priceExpertly made from premium materials
      $5.80
    • Karlyn STI® - Spark Plug Wire Set
      (0 reviews)
      # 906269984
      Hummer H2 2003 Spark Plug Wire Set by Karlyn STI®. Get these top-notch spark plug wires to achieve maximum performance out of your ignition system. They are designed with precision and functionality in mind to withstand high heat and...
      Spiral coreStainless steel magnetic conductive winding
      $28.40 - $32.26
    • Taylor Cable® - Spiro-Pro™ 8mm Ignition Wire Set
      (0 reviews)
      # 199943081
      Hummer H2 2003 Spiro-Pro™ 8mm Ignition Wire Set by Taylor Cable®. These plug wires are the top choice of racers and street enthusiasts for their high performance at an affordable price. With two layers of 100% silicone jacketing and...
      Available For Street Or Track ApplicationsSpiro-Wound With Stainless Steel Wire
      +1
      $65.57
    • Taylor Cable® - Street Thunder™ Ignition Wire Set
      (0 reviews)
      # mpn2125840
      Hummer H2 2003 Street Thunder™ Ignition Wire Set by Taylor Cable®. Get great performance at an extremely affordable price with Taylor’s Street Thunder ignition wires. These 8mm wires deliver all of the performance in your street car.
      Helically Spiral Wound CoreDurable Silicone Double Layer Jacket
      $33.30




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      July 04, 2018
      When Is It Time To Replace My Spark Plugs?
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    2003 Hummer H2 Ignition Parts Reviews

    Average rating:    5 - 1 review
    5 of 5
    Upgrade from OEM Replacement
    In the Mazda 6 2005 Ford engine (factory standard in 2005), originally it had standard Motorcraft copper spark plugs. The Nitrode performance nickel spark plugs are an upgrade, a level or two above the factory Motorcraft spark plugs. As advertised/specified, these spark plugs (which I paired with new TSP ignition coils) did in fact offer better performance/gas mileage (in my case 50% increase in MPG) and smoother running engine. They do run a tad hotter, as specified, with engine temperature just being a tad hotter than what it was before. These plugs do have a drastically different (I think better) design than the factory Motorcraft spark plugs.
    Posted by Andrew (Parrish, FL) / October 29, 20182005 Mazda 6
    Was this review helpful for you? Yes
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