Denso 5302 Spark Plug

Overview of Denso Iridium Power Spark Plug 5302

The Denso Iridium Power spark plug 5302 is engineered for reliable ignition performance across a wide range of vehicles including Acura, Honda, Toyota, and Volkswagen models. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• 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 optimal conductivity
• Nickel ground electrode core material with standard ground configuration
• Pre-gap size of 1.1 mm and flat seat type for proper fitment
• Thread diameter of 14.00 mm and reach of 19.00 mm
• Hex size of 16.0 mm for installation with common tools
• Manufacturer heat range rating of 20
• Resistance rating of 5000 ohms to reduce electrical noise

Features of the Iridium Power Spark Plug Line

The Iridium Power line by Denso focuses on delivering spark plugs with iridium-tipped electrodes that provide a fine spark for improved combustion efficiency. This product line is designed to enhance ignition reliability and longevity compared to conventional plugs, making it suitable for vehicles requiring precise ignition performance such as the Lexus ES300, Nissan Maxima, and Mercedes-Benz S320.

Technical Description and Benefits

The Denso 5302 spark plug features a copper core center electrode that ensures excellent thermal conductivity, helping to maintain stable operating temperatures. The iridium tip on the center electrode offers high wear resistance and a consistent spark, which is critical for engines like the Audi 90 Quattro and Toyota Camry. The ground electrode’s tapercut and u-groove design increases spark exposure, promoting better combustion and fuel efficiency. With a resistance of 5000 ohms, this spark plug minimizes electromagnetic interference with vehicle electronics.

Compatible Vehicles and Applications

• Acura Integra and CL500
• Honda Civic and CRX
• Toyota Supra and MR2
• Volkswagen Golf and Jetta
• Mercedes-Benz S500 and SL500

Installation Notes and Tips

• Ensure the spark plug gap is set to 1.1 mm before installation
• Use a 16 mm socket wrench for proper tightening
• Verify the flat seat type matches the engine’s cylinder head design
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Torque to manufacturer specifications to avoid damage

Quality Assurance and Warranty

Denso manufactures the 5302 spark plug to meet strict quality standards, ensuring consistent performance and durability. The use of premium materials such as iridium and copper contributes to the product’s reliability. While specific warranty details depend on the point of purchase, Denso products typically come with a limited warranty against manufacturing defects.