2003 Cadillac CTS Ignition Wires

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

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 Wire for your CTS. We currently carry a top Ignition Wire in stock that is built to last. Whether you’re replacing a damaged Ignition Wire 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 Wires

Accel – GM Gen 4 Ls3/Ls4/Ls7 Engines (Part No.9070C)

GM Gen 4 Ls3/Ls4/Ls7 Engines

from

$176.99
ACCEL now offers the cure for burnt spark plug wire 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. The ceramic boots will withstand up to 2,000 degrees F. If you are running headers with close tolerances, have an engine bay with little room or an RV with boots that melt because of heat, these wire kits are the answer for burnt and melting boots. The wire uses a 500 Ohms/ft Ferro-Spiral core developed for performance use. It provides excellent energy delivery to the spark plugs, while providing the highest level of RFI/EMI suppression. The Extreme 9000 Ceramic Wires also feature stainless steel spark plug terminals for maximum spark energy to the plugs.

Product Features:
  • 500 Ohms/ft Of Resistance
  • 600 F Rated Silicone Jacket
  • Stainless Steel Plug Terminals
  • RFI Suppression For Street Driven Applications
  • Custom-fit Universal And Import Coverage
  • Pre And Post HEI Vehicles
  • Ceramic boots withstand up to 2,000░ Fahrenheit
  • 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
  • Universal and custom fit applications
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ACDelco – Specific FitSpark Plug Wire Set: Fiberglass Reinforced Latex Graphite Core (Part No.9748UU)

Specific FitSpark Plug Wire Set: Fiberglass Reinforced Latex Graphite Core

from

$73.99
ACDelco Professional Spark Plug Wire Sets consist of a set of wires, encased in an insulating material, connectors, and insulating boots, and are a high quality replacement for many vehicles on the road today. The wires transfer high voltage pulses between the voltage source, the distributor, and the spark plugs. These premium aftermarket replacement components are manufactured to meet your expectations for fit, form, and function.

Product Features:
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
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MSD Ignition – Wire Set; Super Conductor; Black; Universal LS-Series; Remote Coils (Part No.32073)

Wire Set; Super Conductor; Black; Universal LS-Series; Remote Coils

from

$269.99
For GM Gen-III engines such as the LS1 or LS6, these wires are perfect when you relocate the coils. Both 90 degree and MA boots supplied.

Product Features:
  • Extra Long 8.5mm Wires So You Can Cut To Your Designed Length
  • Distributor Cap – Boots and Terminals Included
  • Includes Mini-Stripper-Crimper For Factory Style Crimps
  • Size 90 Degree And Multi-Angled Boots Supplied
  • Durable outer sleeve is a proprietary compound for resistance to high heat or abrasion
  • Stainless steel terminals feature dual crimp tabs to grip wire conductor and outer jacket separately
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Edelbrock – Max-Fire (Ultra-Spark 50) GM LS Truck Spark Plug Wire Set (Part No.22716)

Max-Fire (Ultra-Spark 50) GM LS Truck Spark Plug Wire Set

from

$101.99
The Edelbrock No. 22716 Max-Fire Ultra-Spark 50 Performance’s Spark plug wires are manufactured from highest quality materials to help deliver maximum voltage ensuring the ultimate performance. These wires have an extremely high EMI/RFI suppression along with a very low resistance to help deliver the most spark possible. They feature a heavy duty 8.5mm diameter silicone jacket to protect the Kevlar spiral wound core from heat, moisture and chemicals. They are engineered for high performance engines that need all of the voltage they can get for maximum power output. Made with wire leads that deliver a low 40 ohms of resistance per-foot for maximum EMI/RFI noise suppression. This makes them ideal for engines with aftermarket high performance upgrades that require maximum voltage. See application chart for engine or vehicle specific kits.

Product Features:
  • Only 50 Ohms of Resistance
  • 8.5 mm
  • 12.5″ to 13″ inch Length
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Accel – Wire:X9000 Ls Ceramic 180 11In (Part No.9059C)

Wire:X9000 Ls Ceramic 180 11In

from

$187.99
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
  • Ceramic boots withstand up to 2,000░ Fahrenheit
  • 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
See More

ACDelco – Specific FitSpark Plug Wire Set: Fiberglass Reinforced Latex Graphite Core (Part No.9748RR)

Specific FitSpark Plug Wire Set: Fiberglass Reinforced Latex Graphite Core

from

$125.99
ACDelco Professional Spark Plug Wire Sets consist of a set of wires, encased in an insulating material, connectors, and insulating boots, and are a high quality replacement for many vehicles on the road today. The wires transfer high voltage pulses between the voltage source, the distributor, and the spark plugs. These premium aftermarket replacement components are manufactured to meet your expectations for fit, form, and function.

Product Features:
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
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NGK – Direct Ignition Coil on Plug Boot: Premium Silicone (Part No.58985)

Direct Ignition Coil on Plug Boot: Premium Silicone

from

$7.49
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
  • LIMITED WARRANTY: See package for details
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Most Popular Standard Spark Plug Wire for 2003 Cadillac CTSs

Enhance your 2003 Cadillac CTS with this popular Standard Spark Plug Wire we have in stock, for $7.49.

NGK – Direct Ignition Coil on Plug Boot: Premium Silicone (Part No.58985)

Direct Ignition Coil on Plug Boot: Premium Silicone

from

$7.49
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
  • LIMITED WARRANTY: See package for details
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FAQs for 2003 Cadillac CTS Ignition Wires

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

We currently have just one Ignition Wires for the 2003 Cadillac CTS in stock: Direct Ignition Coil on Plug Boot: Premium Silicone and it costs $7.49.

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

Yes, we carry Ignition Wires for 10 model years of Cadillac CTSs between 2004 and 2015. The following model years are the most popular for Ignition Wire purchases: 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2007, and 2006.

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

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

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

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

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

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

What is your return policy for Cadillac CTS Ignition Wires?

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