Best Spark Plugs For Horsepower

Autolite Small Engine Spark Plug (3924)

  • MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions.
  • IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability.
  • CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together.
  • FUEL EFFICIENCY: The Autolite copper automotive replacement spark plug are guaranteed to deliver quick starts, better fuel economy and smooth acceleration.
  • AUTOLITE ADVANTAGE: Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on our copper plugs for performance and value, backed by decades of experience and passion.
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High-Performance Tuner Chip and Power Tuning Programmer - Boost Horsepower and Torque

  • The Power Tune arrives pre-loaded with custom dyno proven tuner technology that increases horsepower and torque!.
  • HOW IT WORKS - The Power Tune simply plugs into the OBD port of your vehicle. It then safely optimizes the ignition spark advance, air to fuel ratios....
  • EASY 5 MINUTE INSTALL - Tuning your vehicle is so easy anyone can do it, simply plug the Power Tune into your vehicle's OBDII port to unleash hidden....
  • GUARANTEED SAFE - The module never overwrites factory data and always preserves your warranty coverage. If for some reason you remove the tuner, no....
  • OUR PROMISE - If for any reason you are not 100% satisfied with your Power Tune Chip, we offer a full money back guarantee, no questions asked. Buy....
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NGK 4644 V-Power Spark Plug - BKR7E, 4 Pack

  • When you require the best, count on The World Leader in spark plug technology NGK Spark Plugs..
  • NGK offers the highest quality products for virtually every vehicle application..
  • Count on NGK Spark Plugs to deliver the finest quality products and customer service..
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Autolite 3924 Copper Resistor Automotive Replacement Spark Plugs (4 Pack)

  • MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions.
  • IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability.
  • CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together.
  • FUEL EFFICIENCY: The Autolite copper automotive replacement spark plug are guaranteed to deliver quick starts, better fuel economy and smooth acceleration.
  • AUTOLITE ADVANTAGE: Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on our copper plugs for performance and value, backed by decades of experience and passion.
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Autolite 3924 Copper Resistor Automotive Replacement Spark Plug (1 Pack)

  • MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions.
  • IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability.
  • CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together.
  • FUEL EFFICIENCY: The Autolite copper automotive replacement spark plug are guaranteed to deliver quick starts, better fuel economy and smooth acceleration.
  • AUTOLITE ADVANTAGE: Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on our copper plugs for performance and value, backed by decades of experience and passion.
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Autolite 24 Copper Resistor Automotive Replacement Spark Plugs (4 Pack)

  • MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions.
  • IMPROVED DURABILITY: All Autolite spark plugs are Leak proof and come with a heat fused internal seal for long lasting durability.
  • CONSTRUCTION: These replacement spark plugs have a copper-glass seal which bonds the insulator and the terminal post center electrode together.
  • FUEL EFFICIENCY: The Autolite copper automotive replacement spark plug are guaranteed to deliver quick starts, better fuel economy and smooth acceleration.
  • AUTOLITE ADVANTAGE: Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on our copper plugs for performance and value, backed by decades of experience and passion.
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Champion 4 Pack Genuine RCJ7Y Spark Plug Copper Plus 859

  • Brand New (4) Pack of Genuine Champion Spark Plugs... (4) Pack of Spark Plugs Genuine Champion Part # RCJ7Y Stock # 859 Champion Small Engine OE Replacement spark plugs feature a copper core center electrode allows for accurate control of heat range, optimizing the performance and longevity of the spark plug They are the perfect OE replacement plug for lawn and garden applications and similar engines Dependable performance and durability Resists fouling Superior corrosion.
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NGK (6216) CR9EHIX-9 Spark Plug - Pack of 4

  • This 4 pack NGK Iridium IX 6216 Spark Plug replaces Honda 98059-59916-HE, Honda 98059-5991F, DENSO Auto Parts 4142, DENSO Auto Parts 4203, DENSO Auto Parts IUH27, DENSO Auto Parts U27FER-ZU9, DENSO.
  • REDUCE EMISSIONS AND MISFIRES: This tried-and-true Spark Plug boosts performance, and enables better performance so that your engine runs at its best. The durable shell reliably protects the spark plug from damage, ensuring long-lasting sparking capabilities. The center and ground electrodes promote sharper spark focus for fewer misfires.
  • IMPROVE IGNITION AND SPARK EFFICIENCY: This Spark Plug employs advanced center and ground electrodes to produce complete and efficient combustion and deliver an outstanding spark for faster, stronger, and more powerful combustion over the life of the spark plug. The damage-tolerant center and ground electrodes minimize spark gap growth and provide greater ignitability and spark efficiency.
  • RELY ON QUALITY IGNITION COMPONENTS: From their start in 1936 through today, the NGK product line is proof of their dedication to innovation, performance, and quality. In order to deliver high-quality spark plugs and oxygen sensors to the automotive community, NGK has partnered with auto manufacturers to engineer automotive parts tha....
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NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair)

  • EXTENDED CHANGE INTERVAL: The Autolite Iridium XP automotive replacement spark plug is engineered to last for up to 100,000 miles depending on engine type making it one of the most durable spark plugs on the market today.
  • FUEL EFFICIENCY: These spark plugs utilize a 0.6mm finewire iridium centerwire tip design with laser welded technology for maximum fuel efficiency. Our finewire electrodes produce more focused and consistent ignitability resulting in less fuel consumption.
  • OPTIMAL PERFORMANCE: This replacement iridium spark plug provides better durability and a more focused ignition for better overall ignitabilty and optimal performance.
  • AUTOLITE ADVANTAGE: Autolite has been producing spark plugs since 1936 making it one of the most trusted and reliable brands for your OE replacement spark plug needs.
  • CONSTRUCTION: Every iridium spark plug comes with a platinum protected ground wire for maximum efficiency in all ignition types including DIS systems and a V-trimmed ground electrode for improved ignitability.
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6 pc NGK Laser Iridium Spark Plugs compatible with Nissan 370Z 3.7L V6 2009-2010 Ignition Wire Secondary

  • This 6 pack NGK Laser Iridium Spark Plug is compatible with Nissan 370Z 2010, 2009 3.7L V6 and is perfect for a tune up or performance upgrade..
  • REDUCE EMISSIONS AND MISFIRES: This tried-and-true Spark Plug boosts performance, reduces emissions, and enables better fuel economy so that your engine runs at its best. The durable shell reliably protects the spark plug from corrosion, ensuring long-lasting sparking capabilities. The center and ground electrodes promote sharper spark focus for fewer misfires.
  • IMPROVE IGNITION AND SPARK EFFICIENCY: This Spark Plug employs advanced center and ground electrodes to produce complete and efficient combustion and deliver an outstanding spark for faster, stronger, and more powerful combustion over the life of the spark plug. The corrosion-resistant center and ground electrodes minimize spark gap growth and provide greater ignitability and spark efficiency.
  • RELY ON QUALITY IGNITION COMPONENTS: From their start in 1936 through today, the NGK product line is proof of their dedication to innovation, performance, and quality. In order to deliver high-quality spark plugs and oxygen sensors to the automotive community, NGK has partnered with auto manufacturers to engineer automotive parts that fit both the vehicles of today....
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