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2003 LEXUS IS300 Ignitions & Electrical
Showing In Stock Items. Show All 140 Items.
Autolite Copper Core Spark Plugs
Autolite copper core spark plugs feature a cold-formed steel shell with precision-rolled threads, a full copper core electrode for better performance, and a one-piece terminal post to add strength. The ignition plugs use a copper-glass seal that bonds the insulator and terminal post center electrode together. This ensures full voltage at the spark gap and a 100 percent leak-proof, gas-tight seal. Autolite features an extensive application guide to cover just about everything with an internal combustion engine. Keep your engine running smoothly and reliably with Autolite replacement copper core spark plugs.
( 235 )
$1.99
Optima RedTop Starting 12-Volt Batteries
Optima RedTop Starting 12-volt batteries are the ultimate power source for cars, trucks, SUVs, hot rods, and other high-performance vehicles. They're engineered with unique Spiralcell technology, delivering a stronger burst of ignition power, while extending the battery life up to three times longer than conventional models. Maintenance-free RedTop AGM batteries are sealed, leak-proof, and resistant to vibrations—so you can mount them anywhere and in virtually any position on your vehicle. Order the Optima battery designed for your application, and expect a perfect start every time.
( 1531 )
$269.99
XS Power AGM Batteries
XS Power AGM batteries are some of the lightest racing batteries on the market. Independent test results have proven that they outperform other battery models that outweigh these power providers by up to 20 lbs. Cutting-edge lead acid battery technology produces more energy in a smaller space because each cell is compressed before case insertion, resulting in efficient power-producing packages that are completely sealed with no need to ever add water. This design is ideal for the abuse of racing, making these the batteries of choice for demanding racers and Monster Truck drivers who need top performance and reliability. When you are pushing to power the impossible, you need the non-stop capabilities of the XS Power AGM batteries best suited for your application. Product features include: * Designed to be an inch shorter than what the competition offers for fitting in places where space is at a premium * Deep-cycling ability and ultra-low internal resistance results in high cranking amps and excellent vibration resistance * Variable position mounting (except upside-down) thanks to the no-spill design * Offered in 6 V, 12 V, 14 V, and 16 V models
( 283 )
$439.99
E3 Spark Plugs
Energy, efficiency, and ecology--that's the E3 equation! The unique patented electrode configuration of the E3 spark plugs increases the amount of combustion pressure created during each power stroke of an engine. This, of course, results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines.
( 711 )
$7.22
NGK Iridium IX Spark Plugs
NGK Iridium IX spark plugs feature an ultra-fine center electrode that's designed just thick enough to ensure the maximum durability and life of the spark plugs—and just thin enough to create an accurate and consistent spark. They represent the ultimate evolution of spark plug technology and performance. Iridium is the hardest metal used in spark plugs today—six times harder than platinum. This allowed NGK engineers to reduce the voltage requirement for a spark. Iridium IX plugs are available in more than a hundred configurations for universal and vehicle-specific applications.
( 252 )
$6.99
Autolite XP Xtreme Performance Spark Plugs
Autolite XP Xtreme Performance spark plugs feature an iridium-enhanced, .6mm, fine-wire center electrode design and patented platinum side wire technology. They will provide better overall durability and a more focused ignition to produce higher ignitability and improved performance. The Autolite XP Xtreme Performance spark plugs use a nickel plated shell and multi-rib insulator. Whether you have a high performance street car, race car, or daily driver, Autolite XP Xtreme Performance spark plugs will give you the power and consistency that you have been looking for.
( 18 )
$12.99
NGK V-Power Spark Plugs
NGK V-Power spark plugs offer economical performance for nearly any automotive application—and they're the only plugs with NGK's V-Groove technology. These plugs enhance ignitability, lower the voltage requirements of ignition systems, and have strong anti-fouling characteristics, while improving fuel mileage and acceleration performance. The V-Power plugs are also highly durable against electrical and chemical wear, making them long-life replacement plugs. Because of the V-Groove, the spark occurs at the edge of the center electrode—so heat is not absorbed by the electrode itself. This allows the flame kernel to expand quickly and efficiently for a complete burn and great performance. More than a hundred models are available, both universal and application-specific; order the plugs designed for fitment on your vehicle.
( 401 )
$2.99
ACDelco Conventional Resistor Spark Plugs
ACDelco conventional resistor spark plugs feature a design for reliability and efficient performance. These economical replacements remain ideal for many vehicles and marine applications. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance every time. The spark plugs are available in a variety of sizes and other options for universal and application-specific fitment. Order the model recommended for your vehicle.
( 258 )
$2.99
NGK Laser Iridium Spark Plugs
NGK Laser Iridium spark plugs feature laser-welded technology. Lasers are used to pinpoint precision welds, reducing excess debris; this decreases the required voltage to bridge the spark gap. An iridium disc is welded on the center electrode and a platinum disc is welded on the ground electrode, reducing the wear rate of both surfaces and ensuring great durability and long life. These spark plugs are available for use with a variety of engine types.
( 75 )
$9.99
Odyssey Extreme Batteries
These Odyssey Extreme batteries are built to withstand the constant pounding, extreme heat, high revving, and high vibration of performance racing engines. They feature rugged construction and are packed tightly with pure lead plates. Their non-spillable AGM design helps to protect against the shock and vibration that can quickly destroy normal batteries. The pure lead plates mean more power--twice the overall power and three times the life span of conventional batteries. Odyssey Extreme batteries are ideal for a complete range of racing applications, including automobiles, motorcycles, ATVs, snowmobiles, and racing boats.
( 8 )
$448.99
NGK G-Power Platinum Spark Plugs
These G-Power Platinum spark plugs deliver the power and quality that you expect from NGK. The fine pure-platinum electrode tip remains virtually unchanged and reaches self-cleaning temperatures to deliver longer durability and optimum performance. Compared to conventional plugs, G-Power plugs deliver better starts, superior acceleration, and greater fuel economy.
( 133 )
$3.99
NGK Ignition Coils
NGK ignition coils are designed to precisely control the spark intensity, delivering optimum power and the quality you expect from NGK. These replacement coils are designed to exceed OEM specifications for accurate, maintenance-free operation. They're easily installed and provide longevity and durability of your spark energy. NGK offers ignition coils as individual replacements or in a Multi-Pak for convenience and to maintain a proper service procedure.
( 59 )
$81.99
Denso Iridium TT Spark Plugs
Denso Iridium TT spark plugs, with their unique Twin-Tip technology, have two "tips": a 0.4mm iridium center electrode, and a 0.7mm platinum ground electrode. First used with OE spark plugs for luxury and performance cars, they are the smallest mass-produced center electrodes available. They require lower voltage and feature high-ignitability, so there is less interference with spark growth (quenching) and the twin tips deliver omnidirectional ignition, unlike the flat "sandwich" ignition of other spark plugs. Denso selected iridium and engineered it with rhodium to build the most durable alloy for spark plugs. Their patented formula has the highest concentration of iridium of any spark plug and even under the most severe engine temperatures resists oxidation and voltage wear for extended periods. The superior ignition of Denso Iridium TT spark plugs means more efficiency, fewer misfires, and significantly improved combustion, optimizing power and fuel economy like never before. Order the model designed for your vehicle application. Additional features of Denso Iridium TT spark plugs include: * Revolutionary 0.4mm center electrode means significantly improved combustion and reduced misfires * Invented by Denso, Iridium TT Twin-Tip technology creates a larger flame front for more complete combustion * Precision 360 degree laser-welding technology ensures structural support for the iridium center electrode, even in the harshest combustion environments * Tested to last well beyond 100,000 miles, with minimal loss of performance, for greater lifetime savings than any plugs available today
( 17 )
$9.99
Denso Oxygen Sensors
Oxygen sensors, also known as Lambda sensors or O2 sensors, are among the most sensitive and critical components on your car's engine. They monitor the air/fuel mixture under idle, moderate acceleration, and cruise conditions. Oxygen sensors have a smaller range of limits in detecting and adjusting the difference from an optimum air/fuel ratio than the newer wide range air/fuel sensors (A/F sensors). Today's engines may use as many as four oxygen sensors to monitor exhaust gas oxygen content and catalytic converter efficiency. In order to perform these functions properly, Denso oxygen sensors adhere to strict OE standards within incredibly close tolerances. A malfunctioning or incorrectly calibrated oxygen sensor can hurt drivability and illuminate the check engine light, resulting in costly and time-consuming repairs. Denso First Time Fit oxygen sensors are designed to meet those tolerances and more. Key features and benefits of Denso Oxygen Sensors include: * Robotic laser welds * Porous PTFE filters block efficiency-robbing contaminants * Double-protection covers maintain proper temperature for quicker response times and protect ceramic elements from silicone and lead fouling * Rugged, watertight stainless steel housings resist corrosion and contamination * Aluminum oxide trap layers keep silicone and lead out, preventing damage to the platinum electrode * Refined zirconia elements improves sensor response * Superior design maximizes engine performance while reducing fuel consumption and harmful emissions * First Time Fit design delivers the right part the first time
( 95 )
$49.99
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$94.99
Denso Mass Airflow Sensors
The mass air flow (MAF) sensor detects the amount of air drawn into the engine and relays a signal to the engine control unit (ECU) to calculate the proper fuel delivery to the engine. DENSO created the world's first plug-in mass air flow sensor in 1996 and Denso mass air flow sensors meet the stringent requirements of auto manufacturers around the globe. Denso's improved MAF sensor technology utilizes a unique structure that reduces the exposure of the sensing unit. This helps to reduce sensor contamination for improved detection accuracy. Denso also uses a fine platinum wire sensing element coated with a glass film to further protect it from contaminants for extended sensor life. Key features and benefits of Denso mass air flow sensors include: * Denso's First Time Fit design allows for easy plug-in installation * Glass film coated sensing element reduces contamination and improves reliability * Platinum wire sensing element responds quickly to changes in air flow * Reduced size and weight * Sensing element air bypass structure is designed for improved detection accuracy * Helps deliver optimum combustion, performance, and emissions
( 6 )
$135.99
Denso Iridium Power Spark Plugs
Denso Iridium Power spark plugs feature a 0.4mm iridium center electrode and best demonstrate their performance improvement during acceleration. The world's smallest center electrode and specially shaped ground electrode deliver maximum spark energy while withstanding temperatures greater than 4000 degrees F. These features combine to achieve higher ignitability and require lower spark voltage than ever before. As a result, acceleration improves in comparison with normal plugs. To increase ignitability, the flame kernel produced by the spark must be able to grow unobstructed. Normally, this can be accomplished by widening the spark gap. However, this causes spark voltage to increase, which has the opposite effect. Iridium Power plugs use Denso's patented U-Groove ground electrode to achieve maximum ignitability while minimizing required voltage. These spark plugs are available for a wide range of specific applications, including cars, trucks, vans, ATVs, UTVs, scooters, street and off-road motorcycles, personal watercraft, and snowmobiles. Order the model designed for your vehicle. Key features and benefits of Denso Iridium Power spark plugs include: * Patented 360 degree laser-welding assembly process * Unsurpassed center electrode durability * Available for many performance and power sports applications * Improved spark ignition for maximum combustion, even with lean air-fuel mixtures
( 10 )
$7.99
ACDelco Gold Platinum Spark Plugs
ACDelco Gold platinum spark plugs are perfect for engines that run on conventional plugs, as well as newer engines that require platinum plugs. These spark plugs can provide up to 100,000 miles of service before needing replacement (service life varies with individual driving conditions.) Features: * Dual platinum tip for improved resistance to spark erosion, fouling, and corrosive combustion chamber environment * Ribless insulator that improves the plug-to-boot seal * Platinum center electrode and platinum pad that lower the ignition demand voltage and reduce possible flame kernel quenching * One-piece integral suppressor seal that helps reduce radio frequency interference, meters spark plug energy to help provide long electrode life, and seals against compression leakage * Maximum engine performance over time * Corrosion-resistant shell to keep up with the demands of any vehicle * Spark gap remains virtually unchanged during the life of the plug * Meets increased auto industry performance and reliability requirements * Available for most makes and models * 100,000-mile (160,000-kilometer) limited warranty
( 101 )
$7.99
Interstate Mega-Tron Plus Automotive Batteries
Interstate Mega-Tron Plus automotive batteries are designed to meet or exceed OEM vehicle requirements for cold-cranking amps. They have removable caps to add water, extending the life of the batteries. Available in a variety of group sizes, Interstate Mega-Tron Plus automotive batteries will help you fire up your engine, time and time again, with no trouble.
( 38 )
$199.99
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$208.99
Bosch Relays
Plug in Bosch relays for your vehicle's power-switching needs. These quality-built relays exceed OEM specifications to provide reliable service for a wide variety of applications. You can trust Bosch for all of your automotive electrical needs. Features include: * Built to withstand extreme conditions * High-power switching * Function over a wide temperature range * Excellent vibration and impact resistance * Long service life and good climatic resistance
( 38 )
$7.99
Bosch Premium Universal Type Oxygen Sensors
Worn-out sensors can cause engine performance problems and premature catalytic converter damage. Bosch premium universal type oxygen sensors with OE SmartLink produce precise output in proportion to the air/fuel ratio, due to a sophisticated sensing element. These premium sensors also use a patented connector system, which allows them to be added to an existing OE sensor harness. Keeping a properly functioning oxygen sensor in your vehicle saves money on fuel cost and is good for the environment, too!
( 13 )
$76.99
Denso Platinum TT Spark Plugs
Denso Platinum TT spark plugs originated from Denso's Twin-Tip design for original equipment use in the most technologically advanced automobiles. But now Denso offers this cutting-edge technology in a platinum/titanium design customized for today's value-minded automotive enthusiasts. Denso pioneered the use of platinum in spark plug manufacturing. To maximize longevity and enhance durability, Denso applied platinum to both the center and ground electrodes. Platinum offers superior resistance to erosion and corrosion enabling Denso to create spark plugs capable of consistent performance. Additional features and benefits of Denso Platinum TT spark plugs include: * 360 degree laser weld * 1.1mm platinum center electrode * Titanium-enhanced alloy ground electrode * Minimum-quench electrode design * Free standing firing pad * Improved fuel economy * Faster starts * Enhanced flame propagation for increased engine efficiency * Reduced quenching generates a more powerful spark
( 2 )
$4.99
XS Power XV Automotive Series Lithium Batteries
XS Power XV Automotive Series lithium batteries are lightweight, powerful, and offer five times the life over lead acid and AGM batteries. These Lithium Titanate batteries are available for automotive applications in many common BCI group sizes for a direct fit in your vehicle.
( 5 )
$499.99
NGK Standard Series Spark Plugs
NGK Standard Series spark plugs are designed for stock replacement applications. These plugs have a hotter spark, which means better combustion—and that improves performance, while producing less harmful emissions. They're available in a variety of options for both universal and specific vehicle applications. Get the spark plugs used by winning racers: NGK Standard Series.
( 235 )
$3.99
NGK Resistor Spark Plug Wire Sets
NGK Resistor spark plug wire sets utilize a construction method known as "variable pitch" wire winding to create resistance to radio frequency interference. They have a lower resistance than conventional carbon core wires, which translates into longer wire life. At the center of each wire is a fiberglass stranded core, made from the same family of materials as those used in bulletproof vests. This core greatly enhances the overall strength of the wire and prevents the pulling strains that wires are often subjected to. The spark plug wires feature custom-designed terminal boots that provide an exact fit—and high-quality EPDM and silicone coverings to resist high temperatures, oil, and chemical damage. Each wire is fitted with a positive-locking, corrosion-resistant, nickel plated terminal end for a tight fit and maximum resistance to vibration and separation. The wires are numbered to correspond to cylinder numbers, and the coil wires are color-coded for a correct and easy installation. Order the Resistor set designed for your vehicle application.
( 106 )
$42.99
