2005 Cadillac STS Ignition Parts

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    • (0 reviews)
      # 491713607
      Cadillac STS 2005, Ignition Coil by Spectra Premium®. Spectra Premium ignition coils are designed and produced under a strict TS16949 quality control process. At CARiD you can get this superior replacement product and take advantage of...
      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
      $32.34 - $33.55
    • (0 reviews)
      # mpn4075476586
      Cadillac STS 4.6L 2005, Double Platinum Spark Plug by Denso®. OE Recommended Double Platinum Plug - Extra Long Life Double Platinum Plug with Platinum Ground Strap. Denso Double Platinum plug features platinum on both the center and...
      Platinum center electrodePlatinum ground electrode
      $5.44
    • (0 reviews)
      # 81758984
      Cadillac STS 2005, 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
      $42.16 - $131.62
    • (0 reviews)
      # 100098934
      Cadillac STS 2005, 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
      $6.22 - $6.28
    • (0 reviews)
      # mpn4253137532
      Cadillac STS 3.6L 2005, Ignition Coil by Bosch®. An ignition coil is located in a vehicle’s ignition system in order to convert a car battery’s low voltage to create an electric spark in the spark plugs and ignite the fuel. All...
      Meets or exceeds OEM specificationExcellent mechanical stability and corrosion protection
      $39.82
    • (0 reviews)
      # 337974121
      Cadillac STS 2005, 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
      $5.30 - $5.91
    • (0 reviews)
      # mpn1747634
      Cadillac STS 4.6L 2005, 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...
      Lower ignition system voltage requirementsGreater ignitability and performance over conventional spark plugs
      $1.57
    • (0 reviews)
      # 220188387
      Cadillac STS 3.6L 2005, Direct Ignition Coil Boot 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
      $5.20 - $5.44
    • (0 reviews)
      # mpn4075477875
      Cadillac STS 3.6L 2005, 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...
      Fine-wire iridium center electrodePlatinum ground electrode
      $5.83
    • (1 review)
      # mpn1725561
      Cadillac STS 4.6L 2005, 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...
      Designed for faster starts and quicker accelerationBetter fuel economy and lower emissions compared to a traditional plug
      $2.58
    • (0 reviews)
      # 44900156
      Cadillac STS 2005, 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, it is...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $37.82 - $145.75
    • (0 reviews)
      # 100098936
      Cadillac STS 2005, 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
      $6.76 - $7.27
    • (0 reviews)
      # mpn1775411
      Cadillac STS 3.6L 2005, Laser Iridium™ Spark Plug by NGK®. NGK manufactures all types of spark plugs and glow plugs featuring the latest in technology.
      $6.76
    • (0 reviews)
      # 337974122
      Cadillac STS 2005, 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
      $5.74 - $5.98
    • (0 reviews)
      # 337974123
      Cadillac STS 2005, 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
      $1.53 - $3.33
    • (0 reviews)
      # 337974124
      Cadillac STS 2005, 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
      $2.56 - $3.69
    • (0 reviews)
      # 708055714
      Cadillac STS 2005, Professional™ Double 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
      $7.10 - $7.21
    • (0 reviews)
      # mpn4486063600
      Cadillac STS RWD 3.6L 2005, Professional™ Iridium Spark Plug by ACDelco®. 1st Design. Step up to the latest spark plug technology with ACDelco’s Professional Iridium Spark Plugs. Designed to last more than 100,000 miles in most...
      Iridium is one of the hardest metals used in spark plugs today, which allows for smaller, more efficient electrode designs for improved cold starting and quicker accelerationLatest evolution in high-performance plug electrode material
      $5.94
    • (0 reviews)
      # 708096912
      Cadillac STS 2005, 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
      $4.16
    • (0 reviews)
      # mpn2254542444
      Cadillac STS 4.6L 2005, OE Specialty Nickel Spark Plug by Bosch®. Replace your worn out spark plugs with Bosch spark plugs and experience miles of worry-free driving. OE Specialty Spark Plugs ensure safe and reliable performance, same...
      Designed to meet or exceed OE specificationsMatch the fit, form, and function of the OE design
      $1.60
    • (0 reviews)
      # 524005905
      Cadillac STS 2005, 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
      $5.12
    • (0 reviews)
      # mpn2326798
      Cadillac STS 4.6L 2005, Nickel Spark Plug by Champion®. Designed and manufactured to meet or exceed OE standards and specifications, these spark plugs by Champion ensure fast engine start-up and smooth acceleration. The products are...
      Copper Plus - Dependable Performance.Copper core center electrode allows for accurate control of heat range for longer life
      $1.50
    • (0 reviews)
      # 524030910
      Cadillac STS 2005, 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...
      Platinum center electrode reduces gap growth, lowering the voltage requirements, in turn reducing the chance of misfireThin center electrode and v-trimmed ground electrode enhance ignitability and reduce quenching
      $2.04 - $4.66
    • (0 reviews)
      # mpn4254341080
      Cadillac STS 3.6L with 12 Volt System 2005, 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...
      OE quality parts from top original equipment and aftermarket manufacturerThe finest quality at a great price
      $45.74
    • (0 reviews)
      # 73544601
      Cadillac STS 2005, 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
      $56.34 - $157.28
    • (0 reviews)
      # mpn4483462091
      Cadillac STS 3.6L 2005, Ignition Coil by URO Parts®. This superior electrical part by URO is a great alternative solution to the costly factory equipment that will help you restore smooth and efficient operation of your vehicle....
      Designed to replace your worn out or cracked factory partHelps to restore proper operation of your vehicle
      $27.73
    • (0 reviews)
      # mpn4256315620
      Cadillac STS 2005, 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $18.27
    • (0 reviews)
      # 972851145
      Cadillac STS 2005, 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...
      Designed to provide long-lasting service lifeMade utilizing state-of-the-art equipment
      $26.09 - $32.16
    • (0 reviews)
      # mpn888509245
      Cadillac STS Base 2005, 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $33.15
    • (0 reviews)
      # mpn1419951
      Cadillac STS 3.6L 2005, 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
      $26.11
    • (0 reviews)
      # mpn4254339218
      Cadillac STS 3.6L Models Built in Canada 2005, 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...
      OE quality parts from top original equipment and aftermarket manufacturerThe finest quality at a great price
      $29.66
    • (0 reviews)
      # 44900160
      Cadillac STS 2005, Ignition Coil Connector 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...
      Offering hundreds of high-quality pigtails and sockets for nearly every electrical jobUtilizing high grade materials to ensure peak conductivity and perfect connections
      $22.96 - $66.60
    • (0 reviews)
      # 44900163
      Cadillac STS 2005, 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...
      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
      $23.79 - $25.01
    • (0 reviews)
      # mpn44419394
      Cadillac STS 4.6L 2005, Ignition Knock Detonation Sensor Connector by Standard®. 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,...
      Offering hundreds of high-quality pigtails and sockets for nearly every electrical jobUtilizing high grade materials to ensure peak conductivity and perfect connections
      $38.05
    • (0 reviews)
      # mpn915018634
      Cadillac STS 2005, 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $33.11
    • (0 reviews)
      # mpn776128086
      Cadillac STS 2005, GM Original Equipment™ Ignition Control Module Connector 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
      $51.43
    • (0 reviews)
      # 73544610
      Cadillac STS 2005, 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $20.61 - $26.00
    • (0 reviews)
      # 577971781
      Cadillac STS 2005, GM Original Equipment™ Ignition Knock Detonation Sensor Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $24.87 - $32.85
    • (0 reviews)
      # mpn798891906
      Cadillac STS 2005, GM Original Equipment™ Ignition Relay by ACDelco®. Part Of Engine Harness. Low-Profile. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $6.90
    • (0 reviews)
      # mpn767361938
      Cadillac STS 2005, 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $6.58
    • (0 reviews)
      # mpn608134
      Cadillac STS 3.6L 2005, Ignition Knock Detonation Sensor by Bosch®. A knock sensor is vital for detecting engine pinging. Optimize your engine performance and prevent other engine components from damage by simply replacing your faulty...
      High Precision Even under Extreme ConditionsImproved efficiency and prolonged engine life
      $14.22
    • (0 reviews)
      # mpn4495966234
      Cadillac STS 2005, Ignition Knock Detonation Sensor Connector by Dorman®. Dorman offers a comprehensive line of Ignition Knock Sensor Connectors for a wide range of applications. All the connectors are constructed of high-quality...
      Direct replacement for a proper fitNecessary replacement item for passing state inspection
      $20.89
    • (0 reviews)
      # mpn2441504
      Cadillac STS 2005, Ignition Switch Connector by Dorman®. Dorman offers a comprehensive line of Ignition Switch Connectors for a wide range of applications. All Dorman Ignition Switch Connectors are constructed of high-quality materials...
      Direct replacement Ignition Switch Connectors available (where applicable) to ensure a proper fitAppropriate for 10-wire configurations
      $52.56
    • (0 reviews)
      # 44900169
      Cadillac STS 2005, 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
      $51.55 - $51.98
    • (0 reviews)
      # mpn914904999
      Cadillac STS 2005, GM Original Equipment™ Ignition Lock Solenoid 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
      $31.31
    • (0 reviews)
      # mpn4495966828
      Cadillac STS with Transponder Key 2005, 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...
      All keys are shipped precut from the manufacturerNo additional programming fees required
      $33.43
    • (0 reviews)
      # mpn2046365104
      Cadillac STS 4.6L 2005, Copper Spark Plug by Autolite®. With Resistor. OE Style. These spark plugs by Autolite are specially designed and manufactured to ensure quick starts, dependable performance, and smooth acceleration. The products...
      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"
      $1.64
    • (0 reviews)
      # 959903978
      Cadillac STS 2005, Platinum Spark Plugs by Autolite®. 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
      $3.01 - $5.66
    • (0 reviews)
      # mpn2065022169
      Cadillac STS 3.6L 2005, Premium Automotive Nickel Spark Plug by E3®. With Resistor. It fits a wide variety of late model applications, especially import. E3 automotive plugs have three legs securing the DiamondFIRE electrode to the...
      Advanced DiamondFire electrode designProduces a faster burn
      $23.10
    • (4 reviews)
      # 803927792
      Cadillac STS 2005, 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 - $119.60
    • (3 reviews)
      # 803906549
      Cadillac STS 2005, 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)
      # mpn1816062
      Cadillac STS 3.6L 2005, 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...
      Place directly on the spark plugHigh temperature resistant
      $33.79
    • (0 reviews)
      # mpn1502903924
      Cadillac STS 4.6L 2005, STI Ignition Coil by Karlyn STI®. Coil Pack replaces the distributor. It features electronically controlled pack of ignition coils controled by the car's computer and as distributor it is used to create the spark...
      Carefully engineered to increase spark energyPainstakingly designed for ultra high efficiency
      $123.50
    • (0 reviews)
      # mpn902811244
      Cadillac STS 3.6L 2005, Spark Plug Tube by Melling®. Melling provides spark plug tubes for both domestic and import vehicle applications. Each spark plug tube is manufactured from high quality material to assure the correct fit and...
      Right for your vehicle and lifestyleMade from high-quality materials for ultimate durability
      $10.74
    • (0 reviews)
      # mpn2870416115
      Cadillac STS 3.6L 2005 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
      $41.82
    • (0 reviews)
      # 839071817
      Cadillac STS 2005, Ignition Coil 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 precise...
      Made to deliver trouble-free operation for years aheadManufactured with cutting-edge technology
      $32.56 - $32.87
    • (0 reviews)
      # 876478928
      Cadillac STS 2005, 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
      $10.99
    • (0 reviews)
      # 876478902
      Cadillac STS 2005, 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
      $14.99
    • (0 reviews)
      # 876481318
      Cadillac STS 2005, 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
      $13.99
    • (1 review)
      # mpn4498086869
      Cadillac STS 3.6L 2005, Racing Spark Plug by Brisk®. With Resistor. 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 the best conductor of thermal heat & electricitySuperior ignition ability increases engine power
      $10.99




    Guides & Articles

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      Understanding The Different Types Of Spark Plugs
      Since the dawn of the automobile, spark plugs have been an integral part of gasoline engines because they conduct the electrical energy from a vehicle’s ignition...
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