2011 Cadillac STS Ignition and Tune-Up Products

Below you will find various in-demand Cadillac Ignition and Tune-Up Products, components and accessories for your 2011 STS. Advance Auto Parts has popular STS parts like Spark Plugs, Ignition Switches, Ignition Boots and more. You’ll also find aftermarket and OEM Ignition and Tune-Up Products for other STS model years including 2005, 2006, 2007, 2008, 2009, 2010 and more. Select a category of 2011 Cadillac STS Ignition and Tune-Up Products below and start saving instantly.

Popular 2011 Cadillac STS Ignition and Tune-Up Products Categories

Ignition Coil Connectors

Ignition Starter Switches

Spark Plug Tube Seals

Spark Plug Tubes

Ignition Coil Wires

Essential Ignition and Tune-Up Products for 2011 Cadillac STSs

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$70.99

Building upon a foundation of premium full-line products established under NGK ignition and NTK oxygen sensor products, NTK’s expansion to technical sensors is part of our ongoing commitment to streamline product types and increase coverage under one premium brand: NTK, The Sensor Specialist. With over 80 years of automotive expertise, NGK’s family of automotive products are driven by extreme dedication to innovation, performance and quality. NTK is the only OE supplier with a full-line of technical sensors in the aftermarket for import and domestic vehicles. Drawing from OE experience, NTK sensors undergo extreme testing conditions that include thermal shock, vibration and OBD verification. NTK sensors are manufactured to ensure a quality that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:

Reinforced and extra-strength components are used to reduce chance of part failure and prevent corrosion and moisture penetration. Mounting threads match OE for easy, worry free installation.
NTK’s Ignition Knock Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function to ensure proper ignition timing. This advanced technology is used for durability, drivability and fuel economy.
The Ignition Knock (Detonation) Sensor monitors vibrations caused by engine knock, or detonation, to alter the ignition timing and prevent detonation.

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$73.36

An ACDelco GM Original Equipment Ignition Knock (Detonation) Sensor monitors the engine for pinging or spark knock, and is a GM-recommended replacement for your vehicle’s original component. The sensor creates a voltage signal based on the vibrations caused by erratic air/fuel mixture combustion; the engine control module uses this signal to adjust the ignition timing and air/fuel mixture. This original equipment ignition knock sensor has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Undergo the same stringent testing process as the original part
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$5.99

This spark plug features a platinum twin-tip design and a titanium-enhanced ground strap, ensuring superior performance and longevity. The center electrode tip is made from high-quality platinum, providing excellent conductivity and durability. Additionally, the flat seat type ensures a secure and precise fit, making it an ideal choice for enhancing your vehicle’s ignition system.

Product Features:

Platinum Twin-Tip Design: The Denso Platinum TT Spark Plug features a twin-tip design with a high-quality platinum center electrode, ensuring excellent conductivity and enhanced ignition performance.
Titanium-Enhanced Ground Strap: Equipped with a titanium-enhanced ground strap, this spark plug offers superior durability and longevity, making it a reliable choice for your vehicle’s ignition system.
Superior Conductivity: The platinum center electrode tip provides excellent conductivity, ensuring efficient and consistent ignition for improved engine performance.
Enhanced Ignition System: Designed to enhance your vehicle’s ignition system, the Denso Platinum TT Spark Plug delivers superior performance and reliability, making it an ideal choice for automotive enthusiasts.

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$8.28

2X longer service life compared to standard copper plugs Bosch Platinum Spark Plugs are the newest member of our OE fine wire spark plug family. From the brand trusted in the world’s most advanced engines, Bosch Platinum Spark Plugs are engineered to provide you with improved ignitability and performance.

Product Features:

OE design for optimum fit and function
Fine wire design delivers improved ignitability and performance life
Center electrode is an ultra fine wire design.
Copper core provides broader heat range to resist pre-ignition
Tapered shape ground electrode reduces flame shrouding for improved combustion
Yttrium enhanced to resist wear
Nickel-plated shell with rolled threads
Ribbed insulator design

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$71.99

DENSO First Time Fit COP boot sets are identical in form fit color and performance to the factory-installed boots. Every part of each COP boot set construction meets or exceeds OE/OES standards.

Product Features:

OE design ensures a tight boot seal that protects against moisture intrusion
High temperature resistant material provides greater protection against thermal overload
Stainless steel internal spring with resistor to suppress RFI and deliver maximum voltage to the plug
Engineered to the specifications used by the original vehicle manufacturer for an exact fit

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$13.49

ACDelco Professional Direct Ignition Coil Boots serve as the electrical connection between the coil and the spark plug. They act as insulators, helping keep moisture and contaminants out of the connection, and are a high quality replacement for many vehicles on the road today. These premium aftermarket replacement components are manufactured to meet your expectations for fit, form, and function.

Product Features:

Weather tight boot seal helps protect from moisture intrusion
High temperature resistant silicone helps protect against thermal overload
Stainless steel internal spring with resistor suppresses RFI and helps deliver maximum voltage to the spark plug
Provides the performance and dependability you expect from ACDelco

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$9.79

NGK Coil on Plug Boots are built to stringent OEM tolerances, combining original equipment fit, design and outstanding durability. NGK Coil on Plug Boots are manufactured using only premium silicone and always include any required internal springs and ferrite resistors for superior performance and RFI noise suppression. Bridging the important link between ignition coil and spark plug, COP boots should always be replaced with NGK Coil on Plug Boots at the time as changing spark plugs to prevent ignition problems such as flashover.

Product Features:

PREMIUM GRADE SILICONE: Designed to withstand harsh environments
OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression

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$66.99

OE design ensures a tight boot seal that protects against moisture intrusion
High temperature resistant material provides greater protection against thermal overload
Stainless steel internal spring with resistor to suppress RFI and deliver maximum voltage to the plug
Engineered to the specifications used by the original vehicle manufacturer for an exact fit

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$11.99

Made In USA. 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 function throughout the engines service life. Melling recommends new spark plug tubes with every engine rebuild where they are required.

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$199.99

GM Genuine Parts Ignition Starter are designed, engineered, and tested to rigorous standards, and are backed by General Motors. It is a multi-position switch that activates the ignition, accessory, and cranking circuits in your vehicle. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Work with vehicle electronics to help optimize vehicle capabilities
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

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$86.99

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$22.05

Designed to be an ideal replacement for your vehicle’s worn equipment, ACDelco Professional, premium aftermarket Auto Wire and Auto Cable products are built to meet nearly every application and budget. ACDelco meet or exceed most original manufacturers’ specifications. Built to exacting specifications, and extensively tested, ACDelco Auto Wires and Auto Cables includes our Original Equipment line for GM vehicles and a select offering of premium aftermarket Professional products for GM and non-GM vehicles. ACDelco Professional, premium aftermarket Direct Ignition Coil-on-Plug Boots seal snugly against the spark plug’s insulator, keeping moisture and contaminates out and promoting longer spark plug life. They are thoroughly engineered to meet or exceed your expectations for fit, form, and function. ACDelco Professional Direct Ignition Coil-on-Plug Boots provide the performance and dependability you expect from ACDelco.

Product Features:

Weather tight boot seal for protection against moisture intrusion
High temperature resistant silicone for protection against thermal overload
Stainless steel internal spring with resistor to suppress RFI and deliver maximum voltage to the spark plug
Premium, high-quality aftermarket spark plug boot Signs that you might need to replace your direct ignition coil-on-plug boot are:
Engine will not start or run
Reduced Power
Excessive tailpipe emissions
Check Engine Light is on
Engine misfire
Reduced fuel economy

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$5.49

Carquest Premium spark plug boots are engineered to restore ignition boot reliability and performance. They are designed to meet or exceed original equipment (O.E.) specifications for fit, form and function. Our spark plug boots offer excellent heat resistance as well as maximum protection against spark loss. Carquest Premium spark plug boots are built with a durable silicone compound for resistance to high heat and abrasion, resulting in a longer-lasting ignition repair.

Product Features:

OE design provides an exact fit for your application
Provides excellent heat resistance as well as maximum protection against spark loss
Durable silicone compound for resistance to high heat or abrasion
Spring included with the spark plug boot
Design for direct compatibility

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$9.49

PREMIUM GRADE SILICONE: Designed to withstand harsh environments
OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression

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$74.99

Premium quality materials for longer service life
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$107.99

ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

Protective outer coverings help provide long-lasting durability
Color-coded wires allow for easy installation
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$54.99

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

Designed to OE standards for ease of installation
Utilizing high grade materials to ensure peak conductivity and perfect connections
Decades of industry leading research and development focused on meeting the technician’s needs
With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues

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$62.99

Carquest ignition coils meet original equipment (OE) fit, form and function and are built to ensure reliable starting and performance. Carquest ignition coils are tested to ensure proper spark and perfect fit for each application. These ignition coils are an affordable repair choice to restore the vehicle’s ignition system performance.

Product Features:

Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
100% pure copper precision-wound windings increase coil life and ensure reliability and maximum coil output when needed.
Highly conductive aluminum alloy secondary terminal guarantees secondary coil terminals will not oxidize (rust), will provide excellent conductivity, extended coil life and will not cause excessive stress on the primary control circuit.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure confidence and product reliability, every time.

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$79.05

Driveworks offers a line of aftermarket parts and accessories that are commercially acceptable and competitively priced, which provides professional technicians and DIYers with an affordable alternative for repairs.

Product Features:

Direct-fit OE replacement ensures ease of installation
Designed to meet OE performance
As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need

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$67.99

As the innovator and leader in stick coil technology, DENSO has conducted superior testing and inspection processes to insure the highest quality ignition coil. Don’t be fooled by imitations – look for the DENSO name to be sure you’re getting the best.

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$86.99

First Time Fit
Built to DENSO Original Equipment Standards

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$80.05

BWD® is an aftermarket leader, providing a premium line of engine management products. BWD® manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD® is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:

Manufactured using high-quality materials to provide superior durability and long service life
Designed and engineered to ensure precise performance
Thermoplastic housing withstands heat stress for enhanced durability
Internal core made from grain-oriented electrical steel limits loss factor within magnetic circuit to reduce heat that may reduce coil endurance
External core made from oriented silicon steel ensures durability and longevity
Neodymium magnet produces max high voltage output at all speeds
Stainless steel spring resists corrosion
Tin-plated brass terminals improve electrical contact and protect against corrosion

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$51.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

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$20.53

Valve Cover Gasket

Upgrade your 2011 Cadillac STS with Top-Quality Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2011 Cadillac STS, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Cadillac or enhancing its overall performance, Ignition and Tune-Up Products are key to keeping your STS functioning at its best. At Advance Auto Parts, we offer a wide selection of 48 Ignition and Tune-Up Products for the 2011 Cadillac STS, designed to meet your needs without breaking the bank. From Spark Plug replacements to Ignition Switches upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Ignition and Tune-Up Products for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Ignition and Tune-Up Products for your 2011 Cadillac STS at great prices. Our Ignition and Tune-Up Products inventory for this model ranges from just $4.29 to $299.99, with an average price of $46.61. Our 48 Ignition and Tune-Up Products in stock come from 17 trusted brands, so you’re sure to find the right part for your 2011 Cadillac STS without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2011 Cadillac STS, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names like Autolite, ACDelco, E3, and more. Autolite Ignition and Tune-Up Products start at just $4.79 and boast an impressive 5 stars average rating from customers. ACDelco and E3 also bring quality to the table, with Ignition and Tune-Up Products available starting at $7.49, and at an average 5 stars rating. With 764 customer reviews and counting, our 2011 Cadillac STS Ignition and Tune-Up Products have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Ignition and Tune-Up Product upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2011 Cadillac STS is always ready to roll. We’re committed to providing you with everything you need to keep your STS in top shape, all in one place. Start shopping confidently below for your 2011 Cadillac STS!

Best-Selling Spark Plugs for 2011 Cadillac STSs

Enhance the driving experience in your Cadillac with 24 quality Spark Plug components, starting at $4.29.

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$11.99

ACDelco GM Original Equipment Iridium Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. They are our latest in spark plug technology and an exact replacement for your vehicle’s original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.

Product Features:

Iridium is the latest in spark plug technology and is an exact replacement for vehicles’ original components
Iridium composition provides a high melting point and great strength, helps to provide excellent wear resistance and durability
Iridium offers excellent engine idle stability, reliable cold starting, quick acceleration and smooth performance
Three Piece Fired in Suppressor seal meters spark energy for long electrode life, helps prevent combustion leakage and helps block radio frequencies that can affect vehicle electronics
Iridium plugs are laser-welded which provides precision welds, reduces excess debris and wear rate, thus increasing durability
Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies
Resistor Type: Equipped with a resistor to help reduce radio frequency interference, ensuring smooth and reliable engine performance.
Tapered Seat Type: Features a tapered seat type for a secure fit and optimal sealing in your vehicle’s engine.

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$14.99

NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center elect

Product Features:

ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance
IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs

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$4.79

Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Platinum spark plugs provide a center wire platinum firing tip which provides reduced gap erosion, fewer misfires, better performance and increased durability. Consider upgrading to Autolite Double Platinum or Iridium XP spark plugs for increased performance.

Product Features:

High nickel alloy side electrode maintains precise gap
Full platinum tip assures virtually no gap erosion for long life
Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy (as compared to standard plugs)

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$8.49

The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.74 is a 14mm, 1.000 reach plug with a taper seat. It fits a wide variety of late model applications, especially Ford applications. The automotive plugs have three legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.

Product Features:

E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn
Smoother Acceleration & Idle – The faster flame initiated by the The spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
Enhanced Heat Transfer: Three legs securing the Diamond FIRE electrode to the shell ensure excellent heat transfer and create more turbulence in the cylinder.
Wide Compatibility: The E3.74 spark plug is a 14mm, 1.000 reach plug with a taper seat, fitting a wide variety of late model applications, especially Ford vehicles.
Eco-Friendly Performance: Proven to reduce fuel consumption and improve hydrocarbon emissions, contributing to a cleaner environment.
Long-Term Efficiency: The Diamond FIRE side wire is designed for long-term use, maintaining increased power and reduced fuel consumption over time.

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$9.99

Our best spark plug! Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.

Product Features:

0.6 mm finewire design improves ignitability
Patented V-trimmed platinum sidewire technology resists wear
OE equivalent design is engineered for every engine
Designed for better overall durability with virtually no gap erosion

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$6.49

Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Double Platinum spark plugs feature platinum-to-platinum firing which virtually eliminates gap erosion, reduces misfires and increases durability of the plug. Consider upgrading to Autolite Iridium XP spark plugs for increased performance.

Product Features:

Works to optimize engine performance for a longer life and improved fuel economy
OE design
Full-platinum tips; platinum on both the center and side electrodes to promote reduced gap wear
Platinum ball welding process provides a consistent point of contact for enhanced adhesion

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$4.29

Champion® Platinum Power™ spark plugs deliver powerful performance. Made from exclusive Heat-Active™ alloy, a fine-wire center electrode and V-trimmed ground electrode provides sharp spark focus.

Product Features:

Platinum Power- Premium Spark Plug. Powerful Performance.
Platinum center electrode for long life
Fine-wire center electrode for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Heat-Active™ alloy allows electrodes to reach optimal temperature
Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug

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$7.49

ACDelco Gold (Professional) RAPIDFIRE Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These RAPIDFIRE Single Platinum Performance Spark Plugs are designed for everyday use and are a high quality replacement for many vehicles on the road today. These premium aftermarket spark plugs have high-quality suppressors that help prevent misfiring, an improved plug to boot seal, and a pure copper core for greater durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:

Solid state suppressor, with two-piece glass and brass seal, can help reduce radio frequency interference, regulates spark energy for long electrode life, and helps protect against high combustion pressures
Pure copper core provides great heat transfer and helps maximize plug durability
Platinum on center electrode enables superior spark characteristics and can reduce voltage requirements of the ignition system
Ribless insulator helps optimize plug to boot seal
Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Premium aftermarket replacement part
Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models

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$10.99

Durability of an OE style plug combined with Power & Torque of high performance.

Product Features:

0.4mm Iridium Center Electrode: World’s Smallest Diameter that maximizes firing potential
0.7mm Needle Tip Ground Electrode: Promotes higher spark energy and less heat quenching
DENSO Patented Optimized Iridium-Rhodium Alloy Formula: Highest concentration of Iridium vs. competitors for greater durability
DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
Durability of an OE style plug combined with Power & Torque of high performance.
Withstands temperatures greater than 4000° Fahrenheit
Iridium TT

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$13.94

4X longer service life compared to standard copper plugs Bosch OE Finewire Iridium is engineered to deliver both High performance and long life. The Bosch Iridium Plug provides original equipment design, materials and processes represent the best of OE technology. The ultra fine wire design and laser welded tapered ground electrode deliver optimum performance, while the iridium center electrode and platinum ground electrode help it to go the distance. Center Electrode Core Material: Nickel-Yttrium and Copper and Iridium – Center Electrode Tip Material: Iridium – Ground Electrode Tip Material: Nickel-Yttrium and Iridium

Product Features:

OE design for optimum fit and function
Center electrode is an ultra fine wire design.
Provides broader heat range to resist pre-ignition and fouling
Delivers exceptional ignitability and performance
Tapered shape ground electrode
Laser welded iridium-platinum alloy inlay
Nickel-plated shell with rolled threads
Anti-seize and corrosion protection

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$51.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Validated for fit, form, and function

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$12.99

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.

Product Features:

SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
Outstanding Acceleration and High Fuel Efficiency: NGK Iridium IX spark plugs are engineered to deliver superior acceleration and enhance fuel efficiency, making them ideal for performance enthusiasts.
Extreme Ignitability and Anti-Fouling: These spark plugs offer exceptional ignitability and anti-fouling properties, ensuring reliable performance and longevity.

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$10.99

Autolite Iridium Ultra Laser Finewire Spark Plugs are one of our brand’s most technologically advanced products. These spark plugs provide superior durability, more focused ignition with better overall ignitability for optimum performance. Autolite Spark Plugs are the best alternative to OE spark plugs, offering OE fit form and function supporting all foreign and domestic makes and models at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs in the world.

Product Features:

Autolite Iridium Ultra is an engineered OE replacement iridium spark plug.
A laser-welded 0.5mm pure iridium finewire center electrode provides optimal fuel efficiency, acceleration and focused ignitability.
Nickel-plated shell to resist corrosion.
High-alumina ceramic insulator for increased strength.
Laser welded 0.5mm Iridium finewire center electrode.
Proprietary platinum sidewire technology.
Superior Durability: Autolite Iridium Ultra Laser Finewire Spark Plugs are designed to last longer, providing extended service life compared to standard spark plugs.
OE Fit and Function: Autolite Spark Plugs are the best alternative to original equipment (OE) spark plugs, offering perfect fit, form, and function for all foreign and domestic makes and models.
High-Quality Construction: As a leading supplier of spark plugs globally, Autolite ensures the highest quality ignition products for both the automotive aftermarket and original equipment manufacturers.
Value Pricing: Despite their advanced technology and superior performance, Autolite Iridium Ultra Laser Finewire Spark Plugs are available at a value price, making them an economical choice for vehicle maintenance.

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$11.79

Increased performance with World’s smallest Iridium Center Eletrode (0.4mm).

Product Features:

World’s smallest Iridium Center Electrode (0.4mm) for improved spark for maximum combustion
Patented 360-degree laser welding assembly process
U-groove and taper cut ground electrode to maximize flame propagation.
Withstands temperatures greater than 4000° Fahrenheit
Burnished nickel plating for high temperature endurance and superior corrosion resistance
Wide range of part numbers for thousands of applications, including classic and collector cars
Iridium Power

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$14.99

NGK Ruthenium HX High Ignitability spark plugs are the best in class plug for todays modern vehicles. Patented Ruthenium technology offers the most advance tip technology and delivers the highest performance and life expectancy. Created from advanced OE technology as a high ignitability plug; Ruthenium HX spark plugs come with patented, specialized OEM DFE and PSPE tip designs. NGK Ruthenium HX High Ignitability spark plugs provide a more complete fuel burn resulting in a quicker throttle response, smoother idle and better cold starts. Ruthenium center electrode provides industry leading durability.

Product Features:

HIGH IGNITABILITY DOUBLE FINE ELECTRODE DESIGN: Combines 0.6 millimeter ruthenium center with opposed fine wire platinum ground electrode
RUTHENIUM ALLOY CENTER ELECTRODE: NGK’s patented ruthenium technology produces maximum performance, ignitability & durability at high temperatures
PLATINUM PIN TYPE GROUND ELECTRODE: Provides more complete fuel burn, quicker throttle response, smoother idle and better cold starts
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
RECOMMENDED USAGE: Modern vehicles using OE DFE type spark plugs or for those seeking an aftermarket plug with the latest OE technology
Specialized OEM Tip Designs: Features DFE and PSPE tip designs for superior ignitability.
Industry-Leading Durability: Ruthenium center electrode ensures exceptional durability.

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$9.79

ACDelco Gold (Professional) Double Platinum Spark Plug are a high quality alternative to Original Equipment (OE) parts. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:

One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life
Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system
Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance
Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Premium aftermarket replacement part
Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models

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$5.49

NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.

Product Features:

SINGLE PLATINUM TIP: Fine wire 0.6 millimeter platinum tip center electrode ensures improved durability and a consistently stable spark
PLATINUM ALLOY: G-Power platinum provides exceptional value with increased performance and longer service intervals than factory nickel plugs
TRAPEZOIDAL CUT GROUND ELECTRODE: Reduces quenching design produces improved ignitability and performance
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
RECOMMENDED USAGE: Lower cost alternative to double precious metal spark plugs or as an upgrade to OE nickel alloy spark plugs

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$15.05

NGK Laser Platinum spark plugs provide high ignitability and longer service life. Dual platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. The platinum disc welded to backside of ground electrode provides long life, faster starts and quicker acceleration. Laser Platinum spark plugs provide high ignitability and longer service life.

Product Features:

Laser welded Platinum center electrode tip
Platinum disc welded to backside of ground electrode provides long life
Trivalent Metal Plating provides superior anti-corrosion and anti-seizing properties
Faster starts and quicker acceleration
Better fuel economy and lower emissions
Best Platinum spark plug available
Original Equipment Manufacturer approved design

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$14.93

NGK’s Laser Iridium Spark Plugs Provide Superior Ignitability and Long Service Life. Fine Wire Iridium Tipped Center Electrode and Fine Wire Platinum Tipped Ground Electrode Ensures Slow Wear Rate Providing Stable Idle, Superior Anti Fouling, Improved Fuel Efficiency and Lower Emissions.

Product Features:

Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
Corrugated Ribs Prevent Flashover
Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
Copper Core Aids in Heat Removal
Triple Seals Prevent Leakage

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$13.32

The NGK Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling properties. The Iridium alloy has extremely high melting point, ensuring high durability and a consistently stable spark that is perfect for today’s high-tech, high-performance engines. NGK’s IX Iridium Series Plugs were Designed Specifically for the Performance Enthusiast Designed specifically for the performance enthusiast.

Product Features:

Fine Wire Center Electrode Ensures High Durability and a Consistently Stable Spark
Iridium Alloy has an Extremely High Melting Point, Perfect for Today’s High-Tech, High Performance Engines
Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
Corrugated Ribs Prevent Flashover
Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
Copper Core Aids in Heat Removal
Triple Seals Prevent Leakage

from

$11.99

from

$10.99

NGK Laser Platinum spark plugs provide high ignitability and longer service life compared to conventional nickel spark plugs. Laser Platinum plugs are tested to the highest standards to ensure quality and durability. Engineered specifically for OE applications. Laser platinum plugs provide stable idling, superior anti-fouling, improved fuel efficiency and lower emissions. High-grade pure alumina ceramic and 98% pure copper core prevents spark plug from overheating and provides reliable starts. Most Laser Platinum spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.

Product Features:

ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire platinum alloy center electrode provides consistent performance
PLATINUM ALLOY CENTER ELECTRODE: Longer wearing and higher temperature resistance compared to traditional nickel spark plugs
PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
RECOMMENDED USAGE: Best for vehicles with OE fine wire platinum alloy plugs
Enhanced Fuel Efficiency and Lower Emissions: These spark plugs contribute to improved fuel efficiency and reduced emissions, making them an eco-friendly choice.
Superior Anti-Fouling and Stable Idling: The advanced design provides stable idling and superior resistance to fouling, ensuring consistent engine performance.

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$8.28

OE design for optimum fit and function
Fine wire design delivers improved ignitability and performance life
Center electrode is an ultra fine wire design.
Copper core provides broader heat range to resist pre-ignition
Tapered shape ground electrode reduces flame shrouding for improved combustion
Yttrium enhanced to resist wear
Nickel-plated shell with rolled threads
Ribbed insulator design

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$7.49

Champion® Iridium – the ultimate element. This spark plug’s fine-wire iridium center and platinum ground electrodes provide the sharpest spark focus for maximum performance.

Product Features:

Champion Iridium – Maximum Performance. Premium Spark Plug
Iridium center electrode delivers maximum life
Fine-wire center electrode and V-trimmed for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Maintains stable operating temperature under all engine loads
Heat-Active┐ alloy allows electrodes to reach optimal temperature quickly

Top Picks for 2011 Cadillac STS Ignition Boots

Upgrade Cadillac STSs with top-quality Ignition Boots parts, including 3 OEM and aftermarket selections for your 2011 model.

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$9.49

PREMIUM GRADE SILICONE: Designed to withstand harsh environments
OEM MATCHED: Includes all required internal springs and ferrite resistors for superior performance and RFI noise suppression

from

$22.05

Weather tight boot seal for protection against moisture intrusion
High temperature resistant silicone for protection against thermal overload
Stainless steel internal spring with resistor to suppress RFI and deliver maximum voltage to the spark plug
Premium, high-quality aftermarket spark plug boot Signs that you might need to replace your direct ignition coil-on-plug boot are:
Engine will not start or run
Reduced Power
Excessive tailpipe emissions
Check Engine Light is on
Engine misfire
Reduced fuel economy

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$5.49

OE design provides an exact fit for your application
Provides excellent heat resistance as well as maximum protection against spark loss
Durable silicone compound for resistance to high heat or abrasion
Spring included with the spark plug boot
Design for direct compatibility

In-Demand Ignition Coils and Boots for 2011 Cadillac STSs

Select from 16 premium Ignition Coils and Boots parts for your 2011 Cadillac STS, with prices ranging from $14.99 to $299.99.

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from

$67.05

Integrated A/D converter and digital signal processing with a dynamically adaptive switch point improves accuracy and operation
Advanced circuitry protects the system from stray electro-magnetic fields and power spikes
Custom magnetic circuit programming calibrates the sensor while performance testing for improved timing accuracy between the target wheel and sensor output
Internal core made from grain-oriented electrical steel limits loss factor within magnetic circuit to reduce heat that may reduce coil endurance
External core made from oriented silicon steel ensures durability and longevity
Neodymium magnet produces max high voltage output at all speeds
Stainless steel spring resists corrosion
Tin-plated brass terminals improve electrical contact and protect against corrosion

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$86.99

An ACDelco GM Original Equipment Ignition Coil is a GM-recommended replacement for your vehicle’s original component, and undergoes more stringent testing than aftermarket products. It increases electrical system voltage to help ignite the air/fuel mixture as the starting and charging system starts the engine, maintains the battery’s charge, and provides power to the electrical accessories while the engine is running. An ACDelco GM OE Ignition Coil uses pure copper windings to improve durability and provide higher resistance to internal shorts and dielectric breakdown. Because the number and shape of the laminations determine the output characteristics of an ignition coil, ACDelco ensures that the silicone steel plates surrounding the coil correctly match the original part size and number. Since steel laminations work best when they are new, shiny, and clean, ACDelco laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed. This original equipment ignition coil has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:

High quality coated windings to improve durability and provide protection against internal shorts and dielectric breakdown
Silicone steel plates surrounding the ignition coil correctly match the original part size and number exactly
Laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$69.99

Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
100% pure copper precision-wound windings increase coil life and ensure reliability and maximum coil output when needed.
Highly conductive aluminum alloy secondary terminal guarantees secondary coil terminals will not oxidize (rust), will provide excellent conductivity, extended coil life and will not cause excessive stress on the primary control circuit.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure confidence and product reliability, every time.

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$66.05

Driveworks® offers a line of aftermarket parts and accessories that are commercially acceptable and competitively priced, which provides professional technicians and DIYers with an affordable alternative for repairs.

Product Features:

Direct-fit OE replacement ensures ease of installation
Designed to meet OE performance
As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need

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$62.99

Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
100% pure copper precision-wound windings increase coil life and ensure reliability and maximum coil output when needed.
Highly conductive aluminum alloy secondary terminal guarantees secondary coil terminals will not oxidize (rust), will provide excellent conductivity, extended coil life and will not cause excessive stress on the primary control circuit.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure confidence and product reliability, every time.

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$85.99

First Time Fit
Built to DENSO Original Equipment Standards

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$85.99

NGK ignition coils are manufactured to meet or exceed OE standards for the highest durability and operational performance, so they can be installed with confidence. NGK and their family of automotive products have over 80 year’s experience and are driven by extreme dedication to innovation, performance and quality. Developed and rigorously tested in our ISO 17025 accredited test lab under the most extreme conditions, NGK’s coil designs will outperform all others – far beyond operational environments a vehicle would actually experience

Product Features:

OE QUALITY: Vacuum-sealed premium epoxy resin and thermoplastic coil housings provide superior dielectric strength, voltage insulation and durability
OPTIMAL PERFORMANCE: Precision coil windings and laminations maximize outputs, custom NGK ASIC chipset optimizes efficiency, prevents component damage
EASE OF INSTALLATION: NGK Ignition Coils include ignition control module, premium high temperature coil boot, and jumper harnesses where required
THE NGK DIFFERENCE: Featuring superior materials and design enhancements.
EXTENSIVE TESTING: NGK ignition coils must pass extreme testing during manufacturing to ensure the highest quality and durability standards are met
PRODUCT ENGINEERING: Advanced flow and stress modeling systems preemptively identify and avoid common failure points found in OE and competitor coils

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$76.99

Delphi OE technology ignition products are validated to match the vehicles system; OE quality replacement parts for the right fit , form and function; Delphi coils provide OE performance, durability and electromagnetic capacity level requirements.

Product Features:

Delphi coils provide OE performance, durability and electromagnetic capacity level requirements
Delphi ignition coils are designed to operate as part of an integral engine management system to insert power into spark plugs and ensure fast starts; consistent engine performance and optimized fuel efficiency
Delphi uses winding process techniques to control the length of wire between adjacent windings; that’s important since more length means greater voltage differences and can create more pressure that could break down the insulation and wire coating
We back our ignition coil design with proven materials, such as high quality wires and wire coating that resists the cracks, pin holes and imperfections that most often lead to failure issues

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$14.99

Weather tight boot seal helps protect from moisture intrusion
High temperature resistant silicone helps protect against thermal overload
Stainless steel internal spring with resistor suppresses RFI and helps deliver maximum voltage to the spark plug
Provides the performance and dependability you expect from ACDelco

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$127.83

The ACDelco Direct Ignition Coil is a direct fit OEM replacement that contains the same high quality craftsmanship and materials as the original equipment it replaces. To protect coils from the harsh operating environment, laminations are corrosion protected, and primary and secondary coil windings often feature molded plastic protection. These laminations are similar to the OE part.

Product Features:

OES and a direct fit application
Meets or exceeds the OES specifications for durability and performance
High profile insulation to prevent arching
Radio-Frequency Interference (RFI) Suppression
Engineered to withstand extremes in temperatures

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$299.99

Carquest Premium ignition coil sets meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coil sets are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coil sets with an industry-leading warranty. Carquest Premium ignition coil sets are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Built by IATF 16949 certified manufacturers for consistent durability
Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
Segmented secondary bobbins to distribute high voltage and prevent shorting
Extensive design validation testing to ensure long-lasting reliability
100% end-of-line tested to ensure proper performance
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$107.99

Protective outer coverings help provide long-lasting durability
Color-coded wires allow for easy installation
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

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$104.44

Direct Ignition Coil

from

$67.99

from

$66.99

OE design ensures a tight boot seal that protects against moisture intrusion
High temperature resistant material provides greater protection against thermal overload
Stainless steel internal spring with resistor to suppress RFI and deliver maximum voltage to the plug
Engineered to the specifications used by the original vehicle manufacturer for an exact fit

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$49.13

Every WSO ignition coil is developed and designed for its specific application, and engineered for maximum performance. WORLD SOURCEONE ignition coils are designed to operate reliably and dependably under all operating conditions and engine rpm ranges, providing the highest engine performance, low exhaust emissions, and fuel economy objectives. WSO Direct Ignition Coils are designed to adapt the required energy output to match engine-operating conditions and deliver the optimum energy level needed to ignite a diluted stratified charge.

Product Features:

OE-Equivalent and a direct fit application
Superior, reliable performance compared to competitive products
Lower cost alternative to original equipment
No additional time consuming steps needed for installation
Factory original equipment connectors
Improved coil efficiency reduces the need to generate excessive high voltage
Designed to provide durability and performance
Noise abatement technology to eliminate audible coil noise
Lower primary inductance provides high-speed performance
Maximum available voltage under all operating conditions
TS 16949 Certification

Most Sold 2011 Cadillac STS Ignition Sensors

Explore our best-selling Cadillac parts for the 2011 STS among 3 OEM and aftermarket options starting from $41.49.

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from

$65.99

Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

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$70.99

Reinforced and extra-strength components are used to reduce chance of part failure and prevent corrosion and moisture penetration. Mounting threads match OE for easy, worry free installation.
NTK’s Ignition Knock Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function to ensure proper ignition timing. This advanced technology is used for durability, drivability and fuel economy.
The Ignition Knock (Detonation) Sensor monitors vibrations caused by engine knock, or detonation, to alter the ignition timing and prevent detonation.

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$41.49

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 pre-ignition knocking.

Product Features:

Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
Delphi knock sensors prevent against engine damage from pre-ignition knocking
Calibrated for a wide variety of frequencies to detect shifts, and adjust to provide accurate signals to help maximize engine performance
Flat frequency response allows the same sensor to be used on different engines and the sensor responds to knock frequencies higher than the primary frequency
Ground-isolated design with 2-wire shielded harness helps protect the sensor signal from electro-magnetic interference (EMI)
Self-generating piezoelectric design requires no power to the sensor

Top-Rated Ignition and Tune-Up Products Brands For Your 2011 Cadillac STS

Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 2011 Cadillac STSs. Below you’ll find some of our best rated Ignition and Tune-Up Products from Autolite, ACDelco, and E3, and more. Ignition and Tune-Up Products from these brands that fit a 2011 STS start at just $4.79 and are rated as high as 5 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.

Popular Autolite 2011 Cadillac STS Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2011 Cadillac STS, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. Autolite ticks all of those boxes. We offer a wide selection of Autolite Ignition and Tune-Up Products, specifically designed for the 2011 Cadillac STS. With over 4 Autolite brand Ignition and Tune-Up Products in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $4.79, with an average price of just $8.07. Plus, with over 417 customer reviews and an average rating of 5 stars, you can trust that our Autolite Ignition and Tune-Up Products will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

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$10.99

This product is not rated

Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability

“”

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$4.79

(182)

Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration

“I changed them with ignition coil.”

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$9.99

(133)

Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition

“Good product”

Popular ACDelco 2011 Cadillac STS Ignition and Tune-Up Products

ACDelco auto parts is one of the highest quality Ignition and Tune-Up Product brands in the market. Any 2011 Cadillac STS owner should feel confident when installing genuine ACDelco parts in their vehicle. To ensure the best fit and performance for your 2011 STS, Advance Auto Parts carries a full inventory of 8 ACDelco Ignition and Tune-Up Products. Plus you will be keeping your Cadillac in peak condition while saving money because prices on these ACDelco Ignition and Tune-Up Products range from $7.49 to $127.83, plus, with more than 92 customer reviews and an impressive 5 stars average rating, you can be confident the Fram Ignition and Tune-Up Products below will deliver on both quality and value.

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$127.83

This product is not rated

Original Equipment Direct Ignition Coil

“”

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$9.79

This product is not rated

Double Platinum Spark Plug

“”

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$14.99

This product is not rated

Coil on Spark Plug Boot

“”

FAQs for 2011 Cadillac STS Ignition and Tune-Up Products

Which Ignition and Tune-Up Products are best-sellers for 2011 Cadillac STSs?

Out of 48 Ignition and Tune-Up Products that fit 2011 Cadillac STSs, the following parts are the top sellers:

DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (11333297) – $8.49
Iridium Spark Plug: Original Equipment Replacement (10838402) – $11.99
Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RE10PMC5 (5470031) – $4.29

What’s the price range for 2011 Cadillac STS Ignition and Tune-Up Products?

Ignition and Tune-Up Product prices for the 2011 Cadillac STS start at $4.29 and go up to $299.99 for the most premium parts.

What’s the average price of a Ignition and Tune-Up Product for a 2011 Cadillac STS?

The average price for Ignition and Tune-Up Products for the 2011 Cadillac STS is $46.61. Keep in mind the variety of part types within our Ignition and Tune-Up Product category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Ignition and Tune-Up Products for other Cadillac STS model years?

Yes, we currently carry Ignition and Tune-Up Products for 6 model years of Cadillac STSs between 2005 and 2010. Ignition and Tune-Up Products are bought most frequently for the following model years: 2010, 2009, 2008, 2007, 2006, and 2005.

What are the cheapest Ignition and Tune-Up Products for my 2011 Cadillac STS?

The cheapest 2011 Cadillac STS Ignition and Tune-Up Products we carry in stock are:

Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RE10PMC5 (5470031) – $4.29
Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (15650224) – $4.79
G-Power Spark Plug: Single Platinum Tip Design, LTR6GP (12102029) – $5.49
Spark Plug Boot: 1 Boot, Meets or Exceeds OE Specifications (11937953) – $5.49
Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life (15650225) – $6.49

What are the top-rated Ignition and Tune-Up Products that fit the 2011 Cadillac STS?

Out of 764 reviews by customers, our 2011 Cadillac STS Ignition and Tune-Up Products have an average customer rating of . These are some of the highest-rated Ignition and Tune-Up Product types for the 2011 Cadillac STS and their top-rated products:

Spark Plugs
- OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILTR6E11 (11000359) – $14.99
- Iridium Spark Plug: Original Equipment Replacement (10838402) – $11.99
- Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (15650224) – $4.79
Ignition Coils and Boots
- OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILTR6E11 (11000359) – $14.99
- Iridium Spark Plug: Original Equipment Replacement (10838402) – $11.99
- Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (15650224) – $4.79

What types of Ignition and Tune-Up Products do you sell for my 2011 Cadillac STS?

As of 2/5/25, these are some of the most in-demand types of Ignition and Tune-Up Products for a 2011 Cadillac STS:

Can I get help with 2011 Cadillac STS Ignition and Tune-Up Product orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Cadillac Ignition and Tune-Up Products and more.

What is your return policy for Cadillac STS Ignition and Tune-Up Products?

Advance Auto Parts keeps returns simple. For new Cadillac STS Ignition and Tune-Up Products and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2011 Cadillac STS Ignition and Tune-Up Products

NTK – Ignition Knock (Detonation) Sensor (Part No.ID0050)

ACDelco – GM Original Equipment Ignition Knock (Detonation) Sensor (Part No.F6020430221ACD)

DENSO – Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition (Part No.4506)

Bosch – OE Finewire Platinum Spark Plug (Part No.F1000420704BOS)

DENSO – Coil On Plug Boots-6 (Part No.671-6301)

ACDelco – Coil on Spark Plug Boot (Part No.16116)

NGK – Coil on Plug Boot (Part No.58983)

DENSO – Coil On Plug Boots-6 (Part No.671-6307)

Melling – Stock Replacement Spark Plug Tube (Part No.MSPT-4)

GM Genuine Parts – Ebony Ignition Start/Stop Switch (Part No.D1433G)

Carquest Premium – Ignition Switch (Part No.CSC2265)

ACDelco – Professional Direct Ignition Coil Boot (Part No.F3006582807ACD)

Carquest Premium – Spark Plug Boot: 1 Boot, Meets or Exceeds OE Specifications (Part No.35-7119)

NGK – Coil on Plug Boot (Part No.58984)

Carquest Premium – Ignition Coil Connector (Part No.PTA1598)

ACDelco – 7-Way Female Black Multi-Purpose Pigtail (Part No.PT1371)

Carquest – Electrical Connector (Part No.PT914)

Carquest – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.26C1033)

Driveworks – Ignition Coil (Part No.26405)

DENSO – Original Equipment Quality Direct Ignition Coil (Part No.673-7303)

DENSO – Original Equipment Quality Direct Ignition Coil (Part No.673-7301)

Carquest – Ignition Coil (Part No.E405)

Felpro – Spark Plug Tube Seal Set (Part No.ES 72393)

ACDelco – Valve Cover Gasket (Part No.A8027361126ACD)

ACDelco – Iridium Spark Plug: Original Equipment Replacement (Part No.41-109)

NGK – OE Series Laser Iridium Spark Plug: Fine Wire Tip Design, ILTR6E11 (Part No.90117)

Autolite – Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (Part No.AP5263)

E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.74)

Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5263)

Autolite – Double Platinum Spark Plug: Platinum Firing, Superior Durability, Longer Life (Part No.APP5263)

Champion – Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RE10PMC5 (Part No.3032)

ACDelco – RAPIDFIRE Spark Plug (Part No.17)

DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, ITV20TT (Part No.4719)

Bosch – OE Finewire Double Iridium Spark Plug (Part No.F1000426448BOS)

Felpro – Spark Plug Tube Seal Set (Part No.ES 72393)

NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, LTR6IX-11 (Part No.6509)

Autolite Iridium – Iridium Ultra Finewire Spark Plug: Optimal Performance, Durability, Ignitability (Part No.AI5263)

DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, ITV20 (Part No.5339)

NGK – Ruthenium HX High Ignitability Spark Plug: DFE Tip Design, LTR6AHX (Part No.91276)

ACDelco – Double Platinum Spark Plug (Part No.41-814)

NGK – G-Power Spark Plug: Single Platinum Tip Design, LTR6GP (Part No.90198)

NGK – Laser Platinum Spark Plug (Part No.F1000182877NGK)

NGK – Laser Iridium Spark Plug (Part No.F1000424129NGK)

NGK – Iridium IX Spark Plug (Part No.F1000655926NGK)

Melling – Stock Replacement Spark Plug Tube (Part No.MSPT-4)

NGK – OE Series Laser Platinum Spark Plug: Fine Wire Tip Design, PLTR6A-10G (Part No.3587)

Bosch – OE Finewire Platinum Spark Plug (Part No.F1000420704BOS)

Champion – Iridium Spark Plug: Maximum Performance, OE Replacement, RE10WYPB5 (Part No.9901)

GM Genuine Parts – Ebony Ignition Start/Stop Switch (Part No.D1433G)

Carquest Premium – Ignition Switch (Part No.CSC2265)

NGK – Coil on Plug Boot (Part No.58984)

ACDelco – Professional Direct Ignition Coil Boot (Part No.F3006582807ACD)

Carquest Premium – Spark Plug Boot: 1 Boot, Meets or Exceeds OE Specifications (Part No.35-7119)

Carquest – Ignition Coil (Part No.E1069)

ACDelco – Ignition Coil (Part No.D515C)

Carquest Premium – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.EBC1009)

Driveworks – Coil on Plug Coil (Part No.26426)

Carquest – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.26C1033)

DENSO – Original Equipment Quality Direct Ignition Coil (Part No.673-7300)

NGK – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.49018)

Delphi – Ignition Coil (Part No.GN10494)

ACDelco – Coil on Spark Plug Boot (Part No.16103)

ACDelco – Original Equipment Direct Ignition Coil (Part No.F3005386155ACD)

Carquest Premium – Ignition Coil Set: Meets or Exceeds OE Specifications, 6 Count (Part No.EBC1009-6)

ACDelco – 7-Way Female Black Multi-Purpose Pigtail (Part No.PT1371)

Hella – Direct Ignition Coil (Part No.F3005386155HEL)

DENSO – Original Equipment Quality Direct Ignition Coil (Part No.673-7303)

DENSO – Coil On Plug Boots-6 (Part No.671-6307)

WSO – Direct Ignition Coil – (Coil on Plug) (Part No.F3005386155WSO)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA3687)

NTK – Ignition Knock (Detonation) Sensor (Part No.ID0050)

Delphi – Knock Sensor (Part No.AS10262)