Denso 5361 Spark Plug

Overview of Denso Iridium Power Spark Plug 5361

The Denso Iridium Power spark plug 5361 is engineered for precision ignition performance in select Ferrari models. Designed to meet the specific requirements of Ferrari F50, F355, F355 F1, F355 GTS, and F355 Spider, this spark plug ensures reliable combustion and consistent engine operation.

• Iridium center electrode tip for enhanced durability and ignition
• Tapercut, u-groove ground electrode tip design for improved spark efficiency
• Copper core center electrode for optimal conductivity
• Nickel ground electrode core material with standard ground configuration
• Flat seat type with 19.00 mm reach and 14.00 mm thread diameter
• Pre-gap size of 0.9 mm and hex size of 16.0 mm for precise fitment
• Manufacturer heat range rating of 22 suitable for high-performance engines
• Resistance value of 5000 ohms to reduce electrical noise

Detailed Product Description

The Denso Iridium Power 5361 spark plug features a fine iridium tip on the center electrode, which provides a stable and efficient spark for combustion. The copper core center electrode enhances thermal conductivity, helping to dissipate heat effectively and maintain optimal operating temperatures. The ground electrode uses a nickel core with a tapercut, u-groove tip design, which improves spark exposure and ignition reliability. This spark plug has a flat seat type and a reach of 19.00 mm, ensuring proper installation depth and sealing in the combustion chamber. The 14.00 mm thread diameter and 16.0 mm hex size are designed for compatibility with Ferrari F50 and F355 series engines. The pre-gap size of 0.9 mm is factory set to optimize spark performance and reduce misfires.

About the Iridium Power Brand Line

Denso's Iridium Power line focuses on delivering spark plugs with iridium-tipped electrodes that offer enhanced durability and consistent ignition performance. The iridium tip allows for a finer electrode design, which reduces voltage requirements and improves combustion efficiency. This product line is tailored for drivers seeking reliable ignition components that maintain engine performance over extended use, particularly in high-performance vehicles like the Ferrari F355 and F50.

Applications and Problem Solving

• Compatible with Ferrari F50, F355, F355 F1, F355 GTS, and F355 Spider models
• Helps reduce engine misfires and rough idling
• Improves throttle response and fuel efficiency
• Addresses spark plug fouling and electrode wear
• Supports stable ignition under high engine loads

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.9 mm before installation
• Use a torque wrench to tighten to manufacturer specifications to avoid damage
• Check thread condition and clean the spark plug hole before installation
• Apply anti-seize compound sparingly on threads if recommended by the vehicle manufacturer
• Inspect ignition wires and coils for wear during replacement

Quality Assurance and Warranty

Denso manufactures the Iridium Power 5361 spark plug to meet strict quality standards, ensuring consistent performance and durability. The use of premium materials such as iridium and copper contributes to long service life. While specific warranty details may vary, Denso products typically come with manufacturer-backed quality assurance to support reliability in automotive ignition systems.