Denso 5301 Spark Plug

Reliable Ignition Performance for Acura, BMW, Toyota, and More

The Denso Iridium Power 5301 spark plug is engineered to deliver consistent ignition and efficient combustion for a wide range of vehicles including Acura, BMW, Toyota, and others. Designed with advanced materials and precise specifications, this spark plug supports optimal engine performance and fuel efficiency.

• Iridium center electrode tip for enhanced durability and ignition
• Tapercut, u-groove ground electrode tip design for improved spark exposure
• Copper core center electrode for excellent conductivity
• Nickel ground electrode core material with standard ground configuration
• Flat seat type with 14mm thread diameter and 19mm reach
• Pre-gap size of 1.1 mm for precise spark gap
• Hex size of 16.0 mm for easy installation
• Manufacturer heat range of 16 suitable for various driving conditions

Detailed Features and Specifications

The Denso Iridium Power 5301 spark plug features a single ground electrode with a tapercut and u-groove tip design, which enhances spark exposure and combustion efficiency. The center electrode is constructed with a copper core for superior electrical conductivity, topped with an iridium tip that provides long-lasting wear resistance. The ground electrode uses nickel core material, maintaining durability under high temperatures. With a flat seat and a thread diameter of 14 mm, this spark plug fits securely in compatible engines. The 1.1 mm pre-gap size ensures optimal ignition timing and combustion, while the 19 mm reach and 16 mm hex size facilitate proper fitment and installation. The heat range rating of 16 is designed to suit a variety of driving environments and engine types.

Compatible Vehicles and Applications

This spark plug is compatible with numerous makes and models, including Acura, BMW, Buick, Cadillac, Chevrolet, Chrysler, Dodge, Ford, Geo, Honda, Jaguar, Mercedes-Benz, Mercury, Nissan, Oldsmobile, Pontiac, Saab, Saturn, and Toyota. Specific models include the Toyota Camry, Corolla, Celica, 4Runner, and Supra; BMW 750iL, 850Ci, 850CSi, and 850i; as well as Acura Integra and Honda Prelude. The Denso Iridium Power 5301 is suitable for vehicles requiring a 14 mm thread diameter and a 19 mm reach spark plug with a heat range of 16.

• Improves ignition reliability in older or high-mileage engines
• Reduces misfires and rough idling
• Enhances fuel efficiency and throttle response
• Supports stable combustion under various driving conditions
• Helps maintain engine performance in Acura, BMW, and Toyota models

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 1.1 mm as specified. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or seat. The 16 mm hex size allows for standard spark plug socket compatibility. Inspect the spark plug hole for debris and clean if necessary to ensure proper seating. It is recommended to replace spark plugs in sets to maintain consistent engine performance.

Quality Assurance and Warranty

Denso manufactures the Iridium Power 5301 spark plug to meet strict quality standards, ensuring reliable performance and durability. The use of iridium and copper materials contributes to extended service life compared to conventional spark plugs. While specific warranty details may vary, Denso products typically come with a limited warranty against manufacturing defects. Consult the product documentation or manufacturer for exact warranty terms.

About the Denso Iridium Power Line

The Iridium Power line from Denso is designed to provide enhanced ignition performance through the use of iridium-tipped center electrodes. This technology offers improved wear resistance and a more focused spark, which can lead to better combustion efficiency and engine responsiveness. The 5301 spark plug exemplifies these benefits with its advanced electrode design and durable materials, making it suitable for a wide range of vehicles requiring reliable secondary ignition components.