Denso 5312 Spark Plug

Overview of Denso Iridium Power Spark Plug 5312

The Denso Iridium Power spark plug 5312 is engineered for reliable secondary ignition performance. Designed with advanced materials and precise specifications, it supports efficient combustion and engine responsiveness in various vehicle applications.

• Iridium center electrode tip for enhanced durability
• Tapercut, u-groove ground electrode tip design
• Copper core center electrode for optimal conductivity
• Nickel ground electrode core material with standard ground configuration
• Pre-gap size of 0.8 mm for precise spark delivery
• Flat seat type with 19.00 mm reach and 14.00 mm thread diameter
• Hex size of 16.0 mm for standard installation tools
• Manufacturer heat range rating of 27
• Resistance rating of 5000 ohms

Detailed Features and Specifications

The Denso Iridium Power 5312 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 made from nickel, enhancing spark exposure and combustion efficiency. With a pre-gap size of 0.8 mm, this spark plug ensures consistent ignition timing and flame propagation. The flat seat type and 19.00 mm reach make it compatible with specific engine cylinder head designs requiring these dimensions. The 14.00 mm thread diameter and 16.0 mm hex size allow for straightforward installation using common automotive tools. The manufacturer heat range of 27 indicates suitability for engines operating within a moderate temperature range, helping to prevent fouling and pre-ignition. Additionally, the 5000 ohm resistance rating helps reduce electromagnetic interference with vehicle electronics.

About the Iridium Power Product Line

The Denso Iridium Power line focuses on delivering spark plugs with iridium-tipped electrodes that offer improved durability and stable ignition performance. This product line is designed to enhance throttle response and fuel efficiency by providing a more precise and consistent spark compared to conventional plugs. The 5312 model benefits from these characteristics, making it suitable for drivers seeking reliable ignition components that maintain performance over extended use.

Applications and Problem Solving

• Helps resolve misfires caused by electrode wear or poor spark quality
• Reduces engine hesitation during acceleration
• Improves cold start performance in compatible vehicles
• Minimizes fouling in engines prone to carbon buildup
• Supports stable combustion in engines requiring a heat range of 27

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 0.8 mm before installation if not pre-gapped. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or seat. The 16.0 mm hex size allows for use of standard spark plug sockets. Verify compatibility with your vehicle’s engine specifications, particularly thread diameter and reach, to ensure proper fitment and performance.

Quality Assurance and Warranty

Denso manufactures the Iridium Power 5312 spark plug to meet strict quality standards, ensuring consistent performance and durability. While specific warranty details are not provided here, Denso products typically come with manufacturer-backed warranties covering defects in materials and workmanship. Consult your vehicle’s service manual or Denso’s official documentation for warranty terms and conditions.