Denso 4718 Spark Plug

Overview of Denso Iridium TT Spark Plug 4718

The Denso Iridium TT spark plug 4718 is engineered for reliable ignition performance in a variety of vehicles including Buick, Cadillac, Chevrolet, Ford, and more. 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 optimal conductivity
• Nickel ground electrode core material
• Pre-gap size of 1.0 mm for precise spark delivery
• Tapered seat type with 14 mm thread diameter and 25 mm reach
• Hex size of 16 mm for standard installation tools
• Manufacturer heat range rating of 16

Detailed Features and Specifications

The Denso Iridium TT spark plug 4718 features a copper core center electrode with an iridium tip, which provides a balance of conductivity and wear resistance. The ground electrode uses a platinum twin-tip design with a nickel core, improving spark efficiency and electrode longevity. The single ground electrode configuration and a pre-gap size of 1.0 mm ensure consistent ignition performance. This spark plug has a tapered seat type, 14 mm thread diameter, and a 25 mm reach, making it compatible with a wide range of secondary ignition systems.

About the Iridium TT Product Line

The Iridium TT line from Denso focuses on combining iridium and platinum materials in a twin-tip electrode design to enhance ignition reliability and electrode life. This technology supports improved combustion efficiency and reduced misfires, making it suitable for vehicles requiring precise ignition components. The 4718 part number is part of this line, offering a balance of durability and performance for compatible vehicles.

Compatible Vehicles and Applications

This spark plug is compatible with various makes and models, including Buick LaCrosse, Cadillac CTS, Chevrolet Malibu, Ford Fusion, GMC Terrain, Lincoln MKZ, Mazda CX-7, Mercury Milan, Oldsmobile Alero, Pontiac G6, Saturn Vue, and Suzuki Grand Vitara. It is designed for use in secondary ignition systems where a 14 mm thread diameter and 25 mm reach are specified.

• Resolves ignition misfires and rough idling
• Improves cold start performance
• Reduces electrode wear and extends service intervals
• Enhances fuel efficiency through better combustion
• Minimizes spark plug fouling in various driving conditions

Installation Notes and Tips

When installing the Denso Iridium TT spark plug 4718, ensure the pre-gap is set to 1.0 mm if adjustment is necessary. Use a 16 mm socket wrench for proper tightening to avoid damage to the tapered seat. It is recommended to follow the vehicle manufacturer’s torque specifications and replace spark plugs in sets to maintain consistent engine performance.

Quality Assurance and Warranty

Denso manufactures the Iridium TT spark plug 4718 to meet OEM standards, ensuring reliable fit and function. The use of high-quality iridium and platinum materials contributes to long service life and consistent ignition. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship.