Denso 4719 Spark Plug

Overview of Denso Iridium TT Spark Plug 4719

The Denso Iridium TT spark plug 4719 is engineered for reliable ignition performance in a variety of vehicles including Buick, Ford, Chevrolet, and Mazda models. Designed with advanced materials and a twin-tip ground electrode, this spark plug supports efficient combustion and consistent engine operation.

• Iridium center electrode tip for enhanced durability
• Platinum twin-tip ground electrode design
• Copper core center electrode for improved conductivity
• 1.0 mm pre-gap size for optimal spark
• Tapered seat type with 14 mm thread diameter
• Hex size of 16 mm for easy installation
• Manufacturer heat range rating of 20
• 25 mm reach length suitable for various engine configurations

Detailed Features and Specifications

The Denso Iridium TT spark plug 4719 features a copper core center electrode with an iridium tip, which provides a balance of conductivity and wear resistance. The ground electrode is constructed from nickel with a platinum twin-tip design, enhancing spark efficiency and electrode longevity. The single ground electrode with a twin-tip configuration helps maintain stable ignition and reduces misfires. With a resistance rating of 5000 ohms, this spark plug is designed to work effectively with modern ignition systems. The 1.0 mm pre-gap size and tapered seat ensure proper spark gap and secure fitment in compatible engines.

About the Iridium TT Product Line

The Iridium TT line from Denso focuses on combining iridium and platinum materials to optimize spark plug performance and durability. The twin-tip ground electrode design reduces voltage requirements and improves ignitability, making it suitable for a wide range of vehicles. This product line is engineered to provide consistent ignition and longer service life compared to conventional spark plugs.

Compatible Vehicles and Applications

This spark plug is compatible with multiple makes and models, including Buick LaCrosse, Cadillac ATS, Chevrolet Camaro, Ford F-150, Mazda MX-5 Miata, and Land Rover Discovery Sport, among others. It is suitable for secondary ignition systems in these vehicles, helping to address issues such as:

• Engine misfires and rough idling
• Poor fuel efficiency and increased emissions
• Difficulty starting the engine
• Reduced engine power and acceleration
• Ignition system wear and electrode degradation

Installation Notes and Tips

When installing the Denso Iridium TT spark plug 4719, ensure the spark plug gap is set to the manufacturer’s recommended specification, typically 1.0 mm for this part. Use a 16 mm socket for proper torque application and avoid over-tightening to prevent thread damage. The tapered seat design requires careful seating to ensure a secure fit and proper sealing. It is advisable to inspect the ignition coil and wiring during installation to maintain optimal ignition system performance.

Quality Assurance and Warranty

Denso manufactures the Iridium TT spark plug 4719 to meet strict quality standards, ensuring reliable performance and durability. The use of premium materials such as iridium and platinum contributes to extended service life. While specific warranty details may vary, Denso products typically come with a limited warranty against manufacturing defects. Always refer to the vehicle manufacturer’s guidelines and Denso’s warranty policy for complete information.