2003 Honda Insight Ignition and Tune-Up Products

Name: Platinum Spark Plug: Enhanced Durability & Improved Performance
Brand: Autolite
SKU: AP5325
Price: 4.99 USD
Rating: 4.5 (131 reviews)

Below you will find various in-demand Honda Ignition and Tune-Up Products, components and accessories for your 2003 Insight. Advance Auto Parts has popular Insight parts like Spark Plugs, Ignition Coils and Boots, Ignition Sensors and more. You’ll also find aftermarket and OEM Ignition and Tune-Up Products for other Insight model years including 2010, 2011, 2012, 2013, 2014, 2019, 2020, 2021, 2022 and more. Select a category of 2003 Honda Insight Ignition and Tune-Up Products below and start saving instantly.

Popular 2003 Honda Insight Ignition and Tune-Up Products Categories

Spark Plugs

Ignition Coils

Knock Sensors

Essential Ignition and Tune-Up Products for 2003 Honda Insights

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$4.99

Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, better acceleration, and improved fuel efficiency. The platinum firing tip resists gap erosion, extending service life, while the high alumina ceramic insulator enhances thermal conductivity and insulation for added strength. A multi-rib insulator prevents flash-over, and the nickel-plated shell offers exceptional corrosion resistance for long-lasting durability. Designed with a mid-projection standard center electrode and nickel ground electrode tip, these spark plugs deliver reliable performance under demanding conditions. Engineered in the USA with over a century of expertise and backed by the sale of over 11 billion plugs, Autolite Platinum spark plugs are a trusted choice for drivers seeking enhanced engine efficiency and durability.

Product Features:

Engineered with a platinum firing tip that prevents gap erosion for longer service life.
Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
The multi-rib insulator prevents flash-over.
Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
Engineered in the USA: Backed by over 100 years of engineering expertise and over 11 billion plugs sold.

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$10.99

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
Double Iridium-Enhanced Alloy Technology Center Electrode: Offers improved durability and wear resistance for a longer-lasting spark plug.
Designed and Engineered in the USA: Reflects over 100 years of Autolite’s engineering experience and expertise.
Gasket Seat Type: Ensures a secure and proper fit for optimal performance.

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$7.99

The U-Groove Spark Plug features a patented U-groove ground electrode design that enhances ignitability, allowing for leaner fuel mixtures and improved engine efficiency. Built with a nickel center electrode tip and a flat seat type, this spark plug ensures reliable performance and compatibility with a wide range of vehicles, including classic and collector cars. Precision machine-rolled threads minimize the risk of seizing or cross-threading in aluminum heads, making installation smooth and secure. Designed to last twice as long as conventional plugs, it delivers over 30,000 miles of dependable operation. Each plug is 100% pre-fired to guarantee consistent performance, making it an excellent choice for maintaining OE-level performance in your engine.

Product Features:

Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
Wide range of part numbers for thousands of applications, including classic and collector cars
Lasts twice as long as most conventional plugs
100 percent pre-fired to assure reliable operation
U-Groove Conventional

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$6.99

Double Platinum Spark Plug offers enhanced durability and performance with its platinum-to-platinum design, effectively reducing gap erosion and minimizing misfires for a longer service life. Engineered for distributor-less ignition system (DIS) engines, it outperforms copper and standard platinum plugs. The yttrium-enhanced ground electrode ensures superior heat transfer, maintaining durability under high temperatures and pressure. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. Featuring a mid-projection center electrode and flat seat type, this performance-grade spark plug is built with platinum-tipped electrodes for consistent ignition and lasting reliability. Designed to deliver exceptional value, it is a dependable choice for maintaining peak engine performance.

Product Features:

Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
The multi-rib insulator prevents flash-over.
Designed with a mid-projection center electrode and flat seat type to ensure consistent ignition and reliable performance in demanding conditions.

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$8.99

The Double Platinum Power Spark Plug is engineered for drivers seeking enhanced performance and durability. Featuring a fine-wire platinum center electrode and a platinum pad ground electrode, this premium spark plug ensures greater wear resistance and sharper spark focus for reliable ignition. Its Heat-Active alloy optimizes electrode temperature under all engine loads, delivering consistent performance and improved ignitability. The V-trimmed ground electrode further enhances spark precision, while the flat seat design ensures a secure fit. Designed as a standard replacement, this spark plug is equipped with a resistor to minimize electrical interference. Built to maintain stable operating temperatures and withstand demanding conditions, it offers long-lasting performance and exceptional value for your vehicle.

Product Features:

Double Platinum Power – Premium Spark Plug. More Powerful Performance.
Platinum center and ground electrode for greater wear resistance
Maintains stable operating temperature under all engine loads
Fine-wire center electrode for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Heat-Active alloy allows electrodes to reach optimal temperature

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$21.49

Engineered for unmatched performance, this Iridium Long-Life Spark Plug is crafted with DENSO’s patented Iridium Alloy, featuring a fine wire center electrode for superior ignition efficiency. Its Platinum Needle Tip Ground Electrode ensures higher spark energy while minimizing heat quenching, making it ideal for high-performance ignition systems. Built to endure extreme temperatures exceeding 4,000 Deg F, this spark plug is designed to last up to three times longer than conventional plugs, delivering sustained spark performance for over 100,000 miles. The 360-degree laser welding process guarantees a robust bond and structural integrity, ensuring reliability under demanding conditions. With a flat seat type and OE-level precision, this spark plug meets the highest standards for durability, emissions, and performance, making it a long-lasting and cost-effective solution for your vehicle’s ignition system.

Product Features:

Latest OE technology with DENSO’s patented Iridium Alloy (90 percent Ir) and fine wire center electrode
Platinum Needle Tip Ground Electrode: Promotes higher spark energy and less heat quenching
DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
Sustained spark performance over 100,000 miles
Lasts up to three times as long as conventional plugs
Endures extreme temperatures greater than 4,000 degrees F associated with high-performance ignition and special fuel systems
Iridium Long Life (SIP)

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$2.99

Copper Plus spark plug delivers reliable performance and durability, making it an excellent choice for maintaining your vehicle’s efficiency. Featuring a copper core center electrode, it ensures precise heat range control, promoting longer life and consistent functionality. The nickel-tipped center and ground electrodes enhance conductivity while resisting corrosion, ensuring dependable ignition performance over time. Designed to meet ISO and SAE Standards, this spark plug guarantees proven reliability and compatibility with standard replacement needs. Its flat seat type and built-in resistor further contribute to optimal performance, making it a practical and value-driven solution for your engine’s ignition system.

Product Features:

Copper Plus – Dependable Performance and Durability
Copper core center electrode allows for accurate control of heat range for longer life
Superior corrosion resistance
Built to ISO and SAE standards for proven performance
Nickel-tipped center and ground electrodes enhance conductivity for consistent ignition performance.

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$12.29

The Iridium Power Spark Plug features the world’s smallest Iridium Center Electrode at just 0.4mm, delivering unmatched spark precision for maximum combustion and performance. Engineered with a patented 360-degree laser welding assembly process, it ensures durability and reliability even under extreme conditions. The U-groove and taper-cut ground electrode design optimizes flame propagation, while its ability to withstand temperatures exceeding 4000 Deg F guarantees long-lasting performance. Burnished nickel plating enhances resistance to high temperatures and corrosion, making it ideal for a wide range of applications, including classic and collector cars. This spark plug requires 5,000 fewer volts to fire compared to conventional plugs, ensuring superior performance, enhanced horsepower, and improved fuel efficiency. Whether you’re seeking faster starts, fewer misfires under heavy loads, or better overall engine efficiency, this Iridium Power Spark Plug is designed to deliver exceptional results.

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 degree 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
Superior Performance: This spark plug requires 5,000 less volts to fire compared to conventional spark plugs, providing maximum performance even under extreme conditions.
Enhanced Horsepower and Efficiency: Experience more horsepower, faster and easier starts, fewer misfires under heavy loads, and better fuel efficiency with the DENSO Iridium Power spark plug.

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$13.99

Engineered to meet the highest OE performance, durability, and emissions standards, this Iridium Long-Life Spark Plug is a game-changer for your vehicle’s ignition system. Featuring DENSO’s patented Iridium Alloy with a 90% Iridium fine wire center electrode and a platinum ground electrode, it delivers exceptional spark performance and longevity, lasting up to three times longer than conventional plugs. The 360-degree laser welding process ensures a robust bond and structural integrity, even under extreme conditions exceeding 4,000 Deg F. Designed for sustained performance over 100,000 miles, it enhances engine efficiency by providing more horsepower, quicker starts, and fewer misfires, even under heavy loads. Additionally, its advanced design promotes better fuel efficiency, helping you save on costs while reducing emissions. With a flat seat type and premium materials, this spark plug is built to endure and optimize your vehicle’s performance for the long haul.

Product Features:

Latest OE technology with DENSO’s patented Iridium Alloy (90 percent Ir) and fine wire center electrode
Platinum ground electrode for extended life
DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
Sustained spark performance over 100,000 miles
Lasts up to three times as long as conventional plugs
Endures extreme temperatures greater than 4,000 degrees F associated with high-performance ignition and special fuel systems
Iridium Long Life
Enhanced Engine Performance: Enjoy more horsepower, faster and easier starts, and fewer misfires under heavy loads, thanks to the advanced properties of DENSO’s Iridium alloy.
Fuel Efficiency: Experience better conservation of fuel at all times, contributing to overall vehicle efficiency and cost savings.

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$143.99

Hitachi’s Ignition Coils (IGCs) provide the needed energy for today’s high efficiency, high power vehicles. High quality materials ensure that even under the most extreme conditions, Hitachi’s IGCs will not deform or malfunction. Our ignition coils help to produce optimal engine efficiency resulting in reliable performance and gas mileage. Electronic connection points are welded to providing durability during heat cycles. Details such as materials, high turns ratios, and protected circuitry provide a durable and reliable product approved by OE manufacturers. Designed to meet the exact needs of each specific vehicle, Hitachi’s ignition coils are the premium choice.

Product Features:

Benefits of these quality Ignition Coils include efficient spark and reduced need for wires, long product life, and consistent voltage and amperage output.

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$97.99

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:

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
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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$52.99

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
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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$114.99

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
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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$118.99

Benefits of these quality Ignition Coils include efficient spark and reduced need for wires, long product life, and consistent voltage and amperage output.

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$47.44

IGNITION COIL

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$115.99

Every single Delphi ignition coil is designed and endurance tested using high quality materials. This ensures fast starts, consistent engine performance and optimized fuel efficiency. We makes more than 10 million ignition coils for North America each year, and each one is engineered to OE design specifications for vehicles from Ford, Toyota, Nissan, Lexus, GM, Mazda, Chrysler, Subaru, Acura and more.

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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$165.99

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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$50.99

Benefits of these quality Ignition Coils include efficient spark and reduced need for wires, long product life, and consistent voltage and amperage output.

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$100.99

Carquest Premium knock sensors are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium knock sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. We utilize advanced technology to design sensors that are, in many cases, stronger than OE parts. Carquest Premium knock sensors undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium knock sensors 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:

Designed to meet or exceed OE specifications for fit, form and function
Trivalent iridescent chromate plating prevents corrosion
Silicone seals prevent moisture intrusion preventing false codes and sensor failure
Wiring harnesses utilize high-temperature insulation when applicable
Extensive design validation testing and 100% end-of-line tested
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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$65.99

Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

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$118.99

Designed to meet or exceed OE specifications for fit, form and function
Trivalent iridescent chromate plating prevents corrosion
Silicone seals prevent moisture intrusion preventing false codes and sensor failure
Wiring harnesses utilize high-temperature insulation when applicable
Extensive design validation testing and 100% end-of-line tested
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

Upgrade your 2003 Honda Insight with Top-Quality Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2003 Honda Insight, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Honda or enhancing its overall performance, Ignition and Tune-Up Products are key to keeping your Insight functioning at its best. At Advance Auto Parts, we offer a wide selection of 17 Ignition and Tune-Up Products for the 2003 Honda Insight, designed to meet your needs without breaking the bank. From Spark Plug replacements to Ignition Coils and Boots 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 2003 Honda Insight at great prices. Our Ignition and Tune-Up Products inventory for this model ranges from just $2.99 to $118.99, with an average price of $29.74. Our 17 Ignition and Tune-Up Products in stock come from 7 trusted brands, so you’re sure to find the right part for your 2003 Honda Insight 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 2003 Honda Insight, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names like Champion, DENSO, Autolite, and more. Champion Ignition and Tune-Up Products start at just $8.99 and boast an impressive 4.7 stars average rating from customers. DENSO and Autolite also bring quality to the table, with Ignition and Tune-Up Products available starting at $3.99, and at an average 4.6 stars rating. With 681 customer reviews and counting, our 2003 Honda Insight 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 2003 Honda Insight is always ready to roll. We’re committed to providing you with everything you need to keep your Insight in top shape, all in one place. Start shopping confidently below for your 2003 Honda Insight!

Best-Selling Spark Plugs for 2003 Honda Insights

Enhance the driving experience in your Honda with 13 quality Spark Plug components, starting at $2.99.

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$13.99

Latest OE technology with DENSO’s patented Iridium Alloy (90 percent Ir) and fine wire center electrode
Platinum ground electrode for extended life
DENSO Patented 360 degree laser welding process: Ensuring exceptional quality bond and structural strength with the Iridium Center Electrode
Sustained spark performance over 100,000 miles
Lasts up to three times as long as conventional plugs
Endures extreme temperatures greater than 4,000 degrees F associated with high-performance ignition and special fuel systems
Iridium Long Life
Enhanced Engine Performance: Enjoy more horsepower, faster and easier starts, and fewer misfires under heavy loads, thanks to the advanced properties of DENSO’s Iridium alloy.
Fuel Efficiency: Experience better conservation of fuel at all times, contributing to overall vehicle efficiency and cost savings.

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$12.99

Experience the perfect blend of durability and performance with this Iridium TT Spark Plug. Engineered with a 0.4mm Iridium Center Electrode, the world’s smallest diameter, it maximizes firing potential for unmatched ignition efficiency. The 0.7mm Needle Tip Ground Electrode enhances spark energy while minimizing heat quenching, ensuring consistent performance. Built with DENSO’s patented Iridium-Rhodium alloy formula, this spark plug boasts the highest concentration of iridium for superior durability, even under extreme conditions exceeding 4000 Deg F. The 360-degree laser welding process guarantees a robust bond and structural integrity, making it a reliable choice for long-term use. Designed to deliver the durability of an OE-style plug while enhancing power and torque, this spark plug is a high-performance upgrade for your vehicle. With its flat seat type and advanced materials, it ensures optimal compatibility and efficiency, making it a valuable addition to any engine.

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 and Torque of high performance.
Withstands temperatures greater than 4000 degree Fahrenheit
Iridium TT

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$3.99

Autolite Copper spark plugs are designed to deliver reliable performance, ensuring quick starts and the power your vehicle demands. Featuring a copper core center electrode, these plugs excel in thermal control and resist fouling, while the high nickel alloy center and ground electrodes provide extended life and durability. The high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation, offering superior strength. With a corrosion-resistant nickel-plated shell, these spark plugs are built to withstand the test of time. Engineered for optimal fuel efficiency, they help you save on gas while delivering smooth acceleration for an improved driving experience. Meeting or exceeding Original Equipment Service (OES) design Standards, Autolite Copper spark plugs are a trusted choice backed by over a century of engineering expertise and the sale of over 11 billion plugs. Designed with a flat seat type and mid-projection standard electrode, these spark plugs are the industry standard for dependable performance.

Product Features:

The copper core center electrode aids in thermal control and improves resistance to fouling.
Its specially engineered high nickel alloy center and ground electrode provides extended life.
The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
Good Fuel Economy: Designed to optimize fuel efficiency, these spark plugs help you get the most out of every gallon of gas.
Smooth Acceleration: Experience seamless and smooth acceleration with Autolite Copper Core spark plugs, enhancing your driving experience.
OES Design Compliance: These spark plugs are crafted to meet or exceed Original Equipment Service (OES) design requirements, ensuring high-quality performance.
Industry Standard: Autolite Copper Core spark plugs are recognized as the industry standard, backed by over 100 years of engineering expertise and the sale of over 11 billion plugs.

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$8.99

Double Platinum Power – Premium Spark Plug. More Powerful Performance.
Platinum center and ground electrode for greater wear resistance
Maintains stable operating temperature under all engine loads
Fine-wire center electrode for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Heat-Active alloy allows electrodes to reach optimal temperature

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$10.99

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
Double Iridium-Enhanced Alloy Technology Center Electrode: Offers improved durability and wear resistance for a longer-lasting spark plug.
Designed and Engineered in the USA: Reflects over 100 years of Autolite’s engineering experience and expertise.
Gasket Seat Type: Ensures a secure and proper fit for optimal performance.

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$4.99

Engineered with a platinum firing tip that prevents gap erosion for longer service life.
Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
The multi-rib insulator prevents flash-over.
Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
Engineered in the USA: Backed by over 100 years of engineering expertise and over 11 billion plugs sold.

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$6.99

Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
The multi-rib insulator prevents flash-over.
Designed with a mid-projection center electrode and flat seat type to ensure consistent ignition and reliable performance in demanding conditions.

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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. E3.68 is a 14mm, 1.000 reach plug with a gasket seat. It fits a wide variety of late model applications, especially Hemi applications. E3.68 is widely stocked in automotive retail stores. 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 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.
Wide Compatibility: E3.68 spark plugs are 14mm with a 1.000 reach and a gasket seat, fitting a wide variety of late model applications, especially Hemi engines.
Enhanced Heat Transfer: The three legs securing the Diamond FIRE electrode to the shell ensure excellent heat transfer and create more turbulence in the cylinder for better combustion.
Widely Available: E3.68 spark plugs are widely stocked in automotive retail stores, making them easily accessible for consumers.

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$12.29

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 degree 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
Superior Performance: This spark plug requires 5,000 less volts to fire compared to conventional spark plugs, providing maximum performance even under extreme conditions.
Enhanced Horsepower and Efficiency: Experience more horsepower, faster and easier starts, fewer misfires under heavy loads, and better fuel efficiency with the DENSO Iridium Power spark plug.

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$5.99

The Platinum TT Spark Plug features a cutting-edge twin-tip design with a platinum center electrode, ensuring superior conductivity for efficient and consistent ignition. Its titanium-enhanced ground strap adds exceptional durability, making it a reliable choice for long-lasting performance. Engineered to optimize flame propagation, this spark plug promotes more complete combustion, improving engine efficiency and power output. The flat seat type ensures a secure fit, while the advanced materials enhance ignition reliability, making it ideal for automotive enthusiasts seeking enhanced performance and durability.

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.
Optimized Flame Propagation: Engineered to promote more complete combustion, this spark plug enhances engine efficiency and power output for a smoother and more powerful driving experience.

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$10.99

Autolite Iridium Ultra Laser Fine wire 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.

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$7.99

Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
Wide range of part numbers for thousands of applications, including classic and collector cars
Lasts twice as long as most conventional plugs
100 percent pre-fired to assure reliable operation
U-Groove Conventional

from

$2.99

Copper Plus – Dependable Performance and Durability
Copper core center electrode allows for accurate control of heat range for longer life
Superior corrosion resistance
Built to ISO and SAE standards for proven performance
Nickel-tipped center and ground electrodes enhance conductivity for consistent ignition performance.

Top Picks for 2003 Honda Insight Ignition Sensors

Upgrade Honda Insights with top-quality Ignition Sensors parts, including 1 OEM and aftermarket selections for your 2003 model.

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$65.99

Precision piezoceramic element ensures accurate response to a wide range of engine vibrations
Manufactured using the highest quality OEM materials to ensure optimal performance and rugged durability
Designed to meet or exceed all OEM specifications in fit, form & function
Extensive product testing includes salt spray, high/low temperature impact, thermal cycling, vibration, drop among other tests, to ensure all sensors meet or exceed OEM specifications.

Top-Rated Ignition and Tune-Up Products Brands For Your 2003 Honda Insight

Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 2003 Honda Insights. Below you’ll find some of our best rated Ignition and Tune-Up Products from Champion, DENSO, and Autolite, and more. Ignition and Tune-Up Products from these brands that fit a 2003 Insight start at just $3.99 and are rated as high as 4.7 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.

Popular Champion 2003 Honda Insight Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 2003 Honda Insight, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. Champion ticks all of those boxes. We offer a wide selection of Champion Ignition and Tune-Up Products, specifically designed for the 2003 Honda Insight. With over 1 Champion 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 $8.99. Plus, with over 2 customer reviews and an average rating of 4.7 stars, you can trust that our Champion 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.

from $8.99

(2)

Double Platinum Power Spark Plug (REC10PYPB4): Enhanced Ignitability & Durability

“These plugs were a great replacement and worked out well on my bmw.”

Popular DENSO 2003 Honda Insight Ignition and Tune-Up Products

DENSO auto parts is one of the highest quality Ignition and Tune-Up Product brands in the market. Any 2003 Honda Insight owner should feel confident when installing genuine DENSO parts in their vehicle. To ensure the best fit and performance for your 2003 Insight, Advance Auto Parts carries a full inventory of 3 DENSO Ignition and Tune-Up Products. Plus you will be keeping your Honda in peak condition while saving money because prices on these DENSO Ignition and Tune-Up Products range from $12.29 to $13.99, plus, with more than 196 customer reviews and an impressive 4.6 stars average rating, you can be confident the Fram Ignition and Tune-Up Products below will deliver on both quality and value.

from $12.29

(76)

Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IKH20

“Too soon to tell as I only have about 500 miles on these. Install went smoothly but only time will tell. I’m also only getting 12 mpg with my tundra c”

from $12.99

(16)

Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IKH20TT

“Vehicle”

from $13.99

(104)

Iridium Long-Life Spark Plug: OE Performance, SK20HR11

“Changed original plugs at 50k changed these at 77k. Great parts”

FAQs for 2003 Honda Insight Ignition and Tune-Up Products

Which Ignition and Tune-Up Products are best-sellers for 2003 Honda Insights?

Out of 17 Ignition and Tune-Up Products that fit 2003 Honda Insights, the following parts are the top sellers:

Iridium Long-Life Spark Plug: OE Performance, SK20HR11 (20650306) – $13.99
DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (19650207) – $8.49
Iridium Ultra Fine Wire Spark Plug: Laser Welded for Precision (12102063) – $10.99

What’s the price range for 2003 Honda Insight Ignition and Tune-Up Products?

Ignition and Tune-Up Product prices for the 2003 Honda Insight start at $2.99 and go up to $118.99 for the most premium parts.

What’s the average price of a Ignition and Tune-Up Product for a 2003 Honda Insight?

The average price for Ignition and Tune-Up Products for the 2003 Honda Insight is $29.74. 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 Honda Insight model years?

Yes, we currently carry Ignition and Tune-Up Products for 14 model years of Honda Insights between 2000 and 2022. Ignition and Tune-Up Products are bought most frequently for the following model years: 2022, 2021, 2020, 2019, 2014, 2013, 2012, 2011, and 2010.

What are the cheapest Ignition and Tune-Up Products for my 2003 Honda Insight?

The cheapest 2003 Honda Insight Ignition and Tune-Up Products we carry in stock are:

Copper Plus Spark Plug (REC10YC4): Dependable Performance & Durability (11406504) – $2.99
Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (11015588) – $3.99
Platinum Spark Plug: Enhanced Durability & Improved Performance (11015495) – $4.99
Platinum TT Spark Plug with Twin-Tip Design for Enhanced Ignition (11010043) – $5.99
Double Platinum Spark Plug: Enhanced Durability & Performance (20650247) – $6.99

What are the top-rated Ignition and Tune-Up Products that fit the 2003 Honda Insight?

Out of 681 reviews by customers, our 2003 Honda Insight 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 2003 Honda Insight and their top-rated products:

Spark Plugs
- Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (11015588) – $3.99
- Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IKH20TT (10713002) – $12.99
- Iridium Long-Life Spark Plug: OE Performance, SK20HR11 (20650306) – $13.99

What types of Ignition and Tune-Up Products do you sell for my 2003 Honda Insight?

As of 11/2/25, these are some of the most in-demand types of Ignition and Tune-Up Products for a 2003 Honda Insight:

Can I get help with 2003 Honda Insight 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 Honda Ignition and Tune-Up Products and more.

What is your return policy for Honda Insight Ignition and Tune-Up Products?

Advance Auto Parts keeps returns simple. For new Honda Insight 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.

2003 Honda Insight Ignition and Tune-Up Products

Autolite – Platinum Spark Plug: Enhanced Durability & Improved Performance (Part No.AP5325)

Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5325)

DENSO – U-Groove Spark Plug: OE Performance, K20HR-U11 (Part No.3381)

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP5325)

Champion – Double Platinum Power Spark Plug (REC10PYPB4): Enhanced Ignitability & Durability (Part No.7975)

DENSO – Iridium Long-Life Spark Plug: Super Ignition, OE Performance, FK20HR11 (Part No.3426)

Champion – Copper Plus Spark Plug (REC10YC4): Dependable Performance & Durability (Part No.975)

DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IKH20 (Part No.5344)

DENSO – Iridium Long-Life Spark Plug: OE Performance, SK20HR11 (Part No.3421)

Hitachi – Ignition Coil Actual OE Part – New (Part No.IGC0080)

Carquest Premium – Ignition Coil (Part No.EBC1238)

Carquest Premium – Ignition Coil (Part No.EBC1131)

Carquest Premium – Ignition Coil (Part No.EBC1235)

Hitachi – Ignition Coil Actual OE Part – New (Part No.IGC0050)

Delphi – IGNITION COIL (Part No.GN10886)

Delphi – Ignition Coil (Part No.GN10671)

Delphi – Ignition Coil (Part No.GN10646)

Hitachi – Ignition Coil Actual OE Part New (Part No.IGC0095)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.EKA1002)

Carquest Premium – Knock Sensor (Part No.SBC4243)

Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.EKA1018)

DENSO – Iridium Long-Life Spark Plug: OE Performance, SK20HR11 (Part No.3421)

DENSO – Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IKH20TT (Part No.4704)

Autolite – Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (Part No.5325)

Champion – Double Platinum Power Spark Plug (REC10PYPB4): Enhanced Ignitability & Durability (Part No.7975)

Autolite Iridium – Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5325)

Autolite – Platinum Spark Plug: Enhanced Durability & Improved Performance (Part No.AP5325)

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP5325)

E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.68)

DENSO – Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IKH20 (Part No.5344)

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

Autolite Iridium – Iridium Ultra Fine Wire Spark Plug: Laser Welded for Precision (Part No.AI5325)

DENSO – U-Groove Spark Plug: OE Performance, K20HR-U11 (Part No.3381)

Champion – Copper Plus Spark Plug (REC10YC4): Dependable Performance & Durability (Part No.975)

Carquest Premium – Ignition Coil (Part No.EBC1754)

Hitachi – Ignition Coil Actual OE Part – New (Part No.IGC0050)

Delphi – Ignition Coil (Part No.GN10671)

Carquest Premium – Knock Sensor (Part No.SBC4243)