Denso 5359 Spark Plug

Overview of Denso Iridium Power Spark Plug 5359

The Denso Iridium Power spark plug 5359 is engineered for reliable ignition performance in select Buick, Oldsmobile, and Volkswagen vehicles. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Iridium center electrode tip for enhanced durability
• Tapercut, u-groove ground electrode tip design
• Copper core center electrode for improved conductivity
• Nickel ground electrode core material with standard ground configuration
• Pre-gap size of 0.8 mm for optimal spark gap
• Flat seat type with 14.00 mm thread diameter and 12.70 mm reach
• Hex size of 20.6 mm for installation compatibility
• Manufacturer heat range rating of 16
• Resistance value of 5000 ohms to reduce electrical noise

Detailed Features and Specifications

This Denso spark plug 5359 features an iridium center electrode tip, which offers a fine electrode for precise spark generation and long service life. The copper core center electrode enhances thermal conductivity, helping to dissipate heat effectively. The ground electrode uses nickel core material with a tapercut, u-groove tip design to improve spark exposure and combustion efficiency. The standard ground configuration and single ground electrode ensure consistent ignition performance.

The spark plug has a pre-gap size of 0.8 mm, which is factory set to optimize ignition timing and fuel combustion. Its flat seat type and 14.00 mm thread diameter make it compatible with specific engine designs. The 12.70 mm reach and 20.6 mm hex size facilitate proper fitment and ease of installation. With a manufacturer heat range of 16, this spark plug is suited for engines requiring a colder plug to prevent fouling.

About the Iridium Power Product Line

The Denso Iridium Power line focuses on delivering spark plugs with iridium-tipped electrodes that provide precise spark control and extended durability. This product line is designed to improve ignition efficiency and maintain stable engine performance over time. The 5359 spark plug benefits from these characteristics, making it suitable for vehicles like the Buick Cutlass, Oldsmobile LeSabre, and Volkswagen Beetle.

Compatible Vehicles and Common Applications

• Buick Cutlass ignition system maintenance
• Oldsmobile LeSabre spark plug replacement
• Volkswagen Beetle secondary ignition upgrade
• Addressing misfires and rough idling in compatible models
• Improving cold start performance in listed vehicles

Installation Notes and Tips

When installing the Denso Iridium Power spark plug 5359, ensure the pre-gap is checked and adjusted if necessary to 0.8 mm. Use a 20.6 mm socket wrench for proper torque application. The flat seat design requires careful threading to avoid cross-threading. It is recommended to replace spark plugs in sets to maintain consistent engine performance.

Quality Assurance and Warranty

Denso manufactures the 5359 spark plug to meet strict quality standards, ensuring reliable ignition and durability. The iridium tip and copper core materials are selected for longevity and stable performance. While specific warranty details are not provided here, Denso products typically come with manufacturer-backed quality assurance.