2003 Cadillac CTS Ignition Boots

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Keep Your 2003 Cadillac CTS in Top Shape with a Quality Ignition Boot

When it comes to maintaining or upgrading your 2003 Cadillac CTS, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Ignition Boot for your CTS. We currently carry a top Ignition Boot in stock that is built to last. Whether you’re replacing a damaged Ignition Boot or looking to upgrade, our selection for the 2003 Cadillac CTS ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Ignition Coils and Boots and Spark Plugs to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 2003 Cadillac CTS running smoothly and looking great.

Essential 2003 Cadillac CTS Ignition Boots

Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7068)

Coil On Plug Insulator Boot: Spring included, Designed for direct fit

from

$7.99
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:


    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
    • Multipack provides one time replace all COP for better deal
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NGK – Premium OE Fit & Design Spark Plug Wire Set: Ferrite Mag Core, 8 Leads (Part No.51436)

Premium OE Fit & Design Spark Plug Wire Set: Ferrite Mag Core, 8 Leads

from

$78.99
Product Features:
  • PERFECT FIT FOR YOUR VEHICLE: Built to OEM tolerances with OE quality or better materials
  • BUILT TO LAST: Outer Jacket built to withstand temperatures greater than 250 degrees Celsius, inner insulation EPDM or silicone for best dielectric strength
  • STAINLESS STEEL TERMINALS: Provide the highest possible retention to ensure positive connections through the life of the set
  • CYLINDER LEAD ID: Cylinder lead identification tags where possible make installation easier
  • LIMITED WARRANTY: See package for details
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MSD Ignition – Wire Set; Super Conductor; GM LS1; Vette; Camaro; 97-on (Part No.32819)

Wire Set; Super Conductor; GM LS1; Vette; Camaro; 97-on

from

$119.99
The MSD 8.5mm super conductor wire is the performance wire. Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire; incredibly low resistance without electronic interference. In a single 12 inch length of super conductor wire there is only 40 – 50 ohms of resistance. That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it’s great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective electro magnetic interference (EMI) or choke. This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. Available in universal kits and bulk lengths.

Product Features:
  • Bolt-on Performance
  • Custom Fit For Make And Model Listed
  • Wires Are Pre-Cut To Exact Specifications
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Carquest Premium – Coil On Plug Boots (Part No.35-7189)

Coil On Plug Boots

from

$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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GM Genuine Parts – Sparkplug Wire Kit (Part No.19431551)

Sparkplug Wire Kit

from

$94.99
Maintain your Chevrolet, Buick, GMC, or Cadillac vehicle with a Genuine GM Spark Plug Wire Set. This set consists of a group of wires encased in an insulating material, as well as connectors and insulating boots. They transfer high voltage pulses between the voltage source, the distributor, and your vehicle’s spark plug. Only Genuine GM Parts are tested to meet GM Original Equipment standards and are designed specifically to fit your vehicle.

Product Features:
  • Durable to help transfer high voltage pulses without damage
  • Designed, engineered, tested, and warranted for GM vehicles
  • Precise fit for ease of installation
  • For proper installation, locate your nearest GM dealer, independent service center, or body shop
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Carquest Premium – Spark Plug Wire Set (Part No.35-8346)

Spark Plug Wire Set

from

$104.99
CARQUEST Premium Spark Plug Wire Sets are engineered to restore ignition wire reliability and performance. They are designed to meet or exceed OE design requirements, performance, fit, form and function of the OE wire. Stainless steel magnetic winding del

Product Features:
  • SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
  • Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
  • 100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
  • EPDM inner insulation stops power-robbing voltage leaks.
  • With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
  • Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
  • Excellent interference suppression and consistent performance
  • Easy lock terminals for more convenient installation.
  • Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
  • Broad coverage available for most vehicles on the road today
  • Include grease pack to ensure easy installation and removal
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Carquest Premium – Ignition Wire Set (Part No.35-8357)

Ignition Wire Set

from

$76.99
Ignition Wire Set

Holley EFI – HOLLEY EFI ACCESSORI (Part No.561-112)

HOLLEY EFI ACCESSORI

from

$246.99
HOLLEY EFI ACCESSORI

NGK – Premium OE Fit & Design Spark Plug Wire Set: Ferrite Mag Core, 8 Leads (Part No.51054)

Premium OE Fit & Design Spark Plug Wire Set: Ferrite Mag Core, 8 Leads

from

$79.99
Product Features:
  • PERFECT FIT FOR YOUR VEHICLE: Built to OEM tolerances with OE quality or better materials
  • BUILT TO LAST: Outer Jacket built to withstand temperatures greater than 250 degrees Celsius, inner insulation EPDM or silicone for best dielectric strength
  • STAINLESS STEEL TERMINALS: Provide the highest possible retention to ensure positive connections through the life of the set
  • CYLINDER LEAD ID: Cylinder lead identification tags where possible make installation easier
  • LIMITED WARRANTY: See package for details
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Top Street Performance – 8.5mm Universal LS Black Ignition Wires with 135 Degree Plug Boots (Part No.81028)

8.5mm Universal LS Black Ignition Wires with 135 Degree Plug Boots

from

$35.49
TSP’s premium ignition wires are designed for superior performance and durability. A spiral-wound Kevlar? core suppresses RFI (radio-frequency interference) and features 500 ohm per foot resistance for excellent performance. Around the core is a fiberglass braid which provides superior pull strength. The outer jacket is composed of premium high-density silicone rated at 450? F and features a quality gloss finish to resist damage from water and chemicals. This set is not assembled but comes with LS-style terminals for a universal fit.

Product Features:
  • Wire Diameter: 8.5mm
  • Conductor Style: Spiral Wound Kevlar Core
  • Resistance: 500 ohms (O)/ft
  • RFI Suppression: Yes
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Accel – Wire:X9000 Ls Ceramic 180 11In-Black (Part No.9059CK)

Wire:X9000 Ls Ceramic 180 11In-Black

from

$182.99
ACCEL now offers the cure for burnt spark plug boots with Extreme 9000 Ceramic wire kits. The 8mm Ferro-Spiral core wire now has ceramic boots on the spark plug end of the wires. Ceramic boots withstand up to 2,000 degrees. Great for running headers with close tolerances, an engine bay with little room, or an RV with boots that melt because of heat. Ultra high-temperature double silicone construction wire rated at 600 degrees Fahrenheit peak. 500 ohms/ft Ferro-Spiral core developed for performance use. Excellent energy delivery to the spark plugs, while providing the highest level of RFI/EMI suppression. Stainless steel spark plug terminals for maximum spark energy to the plugs. Pre-made to factory lengths for a perfect fit. In addition to 1997-2015 Gen 3/4 LS, also a direct fit for Gen V GM engines: 2015-2016 Cadillac Escalade 6.2L 2016 Chevrolet Camaro 6.2L 2014-2016 Chevrolet Corvette 6.2L 2015-2016 Chevrolet Corvette Z06 6.2L 2014-2016 Chevrolet Silverado 1500 4.3L/5.3L/6.2L 2015-2016 Chevrolet Suburban 5.3L 2015-2016 Chevrolet Tahoe 5.3L 2014-2016 GMC Sierra 1500 4.3L/5.3L/6.2L 2015-2016 GMC Yukon 5.3L/6.2L

Product Features:
  • Total length= 12″
  • Straight Spark Plug Boot
  • Black Ceramic boots withstand up to 2,000░ Fahrenheit
  • Black Ceramic boots withstand up to 2,000° Fahrenheit
  • 8mm double silicone construction black wire rated at 600░ F rated
  • 8mm double silicone construction black wire rated at 600° F rated
  • 500 Ohms/foot ferro sprial core offers the highest level of RFI/EMI suppression
  • Stainless Steel Plug Terminals
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GM Genuine Parts – Spark Plug Wire Set: Fiberglass Reinforced Latex Graphite Core, 8 Wire Set (Part No.748TT)

Spark Plug Wire Set: Fiberglass Reinforced Latex Graphite Core, 8 Wire Set

from

$113.99
ACDelco GM Original Equipment Spark Plug Wire Sets consist of a set of wires, encased in an insulating material, connectors, and insulating boots, and are GM-recommended replacements for your vehicle’s original components. The wires transfer high voltage pulses between the voltage source, the distributor, and the spark plug. These original equipment wires have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Durable to help transfer high voltage pulses without damage
  • 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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Accel – GM Ls Stock Boot Uni (Part No.9060C)

GM Ls Stock Boot Uni

from

$195.99
ACCEL ceramic boot spark plug wires provide the ultimate in heat resistant technology.

Product Features:
  • Includes LS coil boots and terminals
  • 14″ wire length
  • Ceramic boots withstand up to 2,000° Fahrenheit
  • 8mm double silicone construction black wire rated at 600° F rated
  • 500 Ohms/foot ferro sprial core offers the highest level of RFI/EMI suppression
  • Universal and custom fit applications
  • Pre And Post HEI Vehicles
  • Stainless Steel Plug Terminals
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Most Popular Spark Plug Boot for 2003 Cadillac CTSs

Enhance your 2003 Cadillac CTS with this popular Spark Plug Boot we have in stock, for $7.99.

Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7068)

Coil On Plug Insulator Boot: Spring included, Designed for direct fit

from

$7.99
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:


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
  • Multipack provides one time replace all COP for better deal
See More

FAQs for 2003 Cadillac CTS Ignition Boots

What’s the price range for 2003 Cadillac CTS Ignition Boots?

We currently have just one Ignition Boots for the 2003 Cadillac CTS in stock: Coil On Plug Insulator Boot: Spring included, Designed for direct fit and it costs $7.99.

Does Advance Auto Parts sell Ignition Boots for other Cadillac CTS model years?

Yes, we carry Ignition Boots for 14 model years of Cadillac CTSs between 2004 and 2019. The following model years are the most popular for Ignition Boot purchases: 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, and 2011.

Does Advance Auto Parts sell Ignition Boots for any other 2003 Cadillac models?

Yes. We stock Ignition Boots for 4 other popular 2003 Cadillac models. Some of the most popular are 2003 Escalade Ignition Boots, 2003 Escalade ESV Ignition Boots, 2003 Escalade EXT Ignition Boots, 2003 DeVille Ignition Boots, and 2003 Seville Ignition Boots.

What types of Ignition Boots do you sell for my 2003 Cadillac CTS?

We currently have just 1 Ignition Boot in stock for a 2003 Cadillac CTS, and as of 3/1/26, it is a Spark Plug Boot.

Can I get help with 2003 Cadillac CTS Ignition Boot orders?

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

What is your return policy for Cadillac CTS Ignition Boots?

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