Denso 5316 Spark Plug

Overview of Denso Iridium Power Spark Plug 5316

The Denso Iridium Power spark plug 5316 is engineered for precision ignition performance in select Maserati and Porsche models. Designed with advanced materials and a specialized electrode configuration, this spark plug supports efficient combustion and reliable 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 0.7 mm for precise spark gap
• Flat seat type with 19.00 mm reach and 14.00 mm thread diameter
• Hex size of 20.6 mm for installation compatibility
• Manufacturer heat range rating of 24
• Resistance value of 5000 ohms to reduce electrical noise

Detailed Features and Specifications

The Denso Iridium Power 5316 spark plug incorporates a copper core center electrode with an iridium tip, which provides a balance of excellent electrical conductivity and wear resistance. The ground electrode features a tapercut, u-groove design that enhances spark exposure and combustion efficiency. With a single ground electrode made from nickel, the plug maintains durability under high-temperature conditions. The flat seat design ensures a secure fit in the combustion chamber, while the 19.00 mm reach and 14.00 mm thread diameter match OEM specifications for compatible Maserati and Porsche engines. The 0.7 mm pre-gap size is optimized for ignition performance, and the 5000 ohm resistance helps minimize electromagnetic interference with vehicle electronics.

About the Iridium Power Product Line

The Iridium Power line by Denso focuses on delivering spark plugs with iridium-tipped center electrodes, which offer improved ignition stability and longer service life compared to conventional plugs. This product line is designed to meet the demands of high-performance and luxury vehicles, such as Maserati and Porsche models, by providing consistent spark energy and enhanced combustion efficiency.

Compatible Vehicles and Applications

• Compatible with Maserati Biturbo and Spyder models
• Compatible with Porsche 911 and 425 models
• Designed for secondary ignition systems requiring a 14 mm thread diameter and 19 mm reach
• Suitable for engines requiring a heat range of 24 and flat seat spark plugs

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.7 mm before installation if not pre-gapped
• Use a 20.6 mm hex socket for proper tightening torque
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Torque to manufacturer specifications to avoid damage to the spark plug or cylinder head

Quality Assurance and Warranty

Denso manufactures the Iridium Power 5316 spark plug to meet strict OEM standards for fit, form, and function. The use of high-quality materials such as iridium and copper ensures durability and consistent performance. While specific warranty details may vary, Denso products typically come with a limited warranty against manufacturing defects when installed and used according to guidelines.