Denso 4702 Spark Plug

Reliable Ignition Performance for Acura and BMW Vehicles

The Denso Iridium TT spark plug 4702 is engineered to deliver consistent ignition performance across a wide range of vehicles including Acura, BMW, Honda, and Toyota models. Designed with advanced materials and a twin-tip ground electrode, this spark plug supports efficient combustion and engine responsiveness.

• Iridium center electrode tip for enhanced durability and ignition
• Platinum twin-tip ground electrode design for improved spark stability
• Copper core center electrode for optimal conductivity
• Flat seat type with 14mm thread diameter and 19mm reach
• Manufacturer heat range rating of 20 for balanced thermal performance

Advanced Design Features of the Denso Iridium TT 4702 Spark Plug

The Denso Iridium TT spark plug 4702 incorporates a copper core center electrode with an iridium tip, providing a strong and reliable spark while maintaining excellent wear resistance. The ground electrode features a platinum twin-tip design with a nickel core, which enhances spark exposure and reduces quenching for better combustion efficiency. With a pre-gap size of 1.0 mm and a single ground electrode, this spark plug is optimized for precise ignition timing and fuel efficiency. The 16 mm hex size allows for straightforward installation and removal.

Iridium TT Brand Line Overview

The Iridium TT line from Denso focuses on combining iridium and platinum materials in a twin-tip electrode configuration. This design aims to improve ignition performance and longevity compared to conventional spark plugs. The twin-tip ground electrode reduces voltage requirements and promotes more complete combustion, which can contribute to smoother engine operation and reduced emissions. The 4702 part number is a representative model within this line, suitable for various domestic and import vehicles.

Compatible Vehicles and Common Applications

• Compatible with Acura, BMW, Honda, Toyota, and other makes
• Suitable for models such as the Acura TL, BMW 328i, Honda Accord, and Toyota Camry
• Addresses issues like misfires, rough idling, and poor fuel economy
• Helps restore engine responsiveness and smooth acceleration

Installation Notes and Tips

• Ensure the spark plug gap is set to 1.0 mm before installation
• Use a torque wrench to tighten to manufacturer specifications to avoid damage
• Inspect the spark plug threads and cylinder head for debris before installation
• Replace spark plugs in sets to maintain consistent engine performance

Quality Assurance and Warranty

Denso manufactures the Iridium TT 4702 spark plug to meet strict quality standards, ensuring reliable ignition and durability. The use of iridium and platinum materials contributes to extended service life compared to standard plugs. While specific warranty terms may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship.