Denso 4502 Spark Plug

Overview of Denso Platinum TT Spark Plug 4502

The Denso Platinum TT spark plug 4502 is engineered for reliable ignition performance across a wide range of vehicles including Audi, Honda, Toyota, and Volkswagen models. Designed with advanced materials and a twin-tip ground electrode, this spark plug supports efficient combustion and consistent engine operation.

• Titanium enhanced twin-tip ground electrode for improved ignition
• Platinum center electrode tip for durability and stable performance
• Copper core center electrode for optimal conductivity
• Flat seat type with 14mm thread diameter and 19mm reach
• Resistance rating of 5000 ohms to reduce electrical noise
• Compatible with various makes and models including Accord, Camry, Jetta, and more

Technical Features and Specifications

The Denso Platinum TT 4502 spark plug features a unique twin-tip ground electrode design enhanced with titanium, which helps maintain a precise spark gap and improves ignition reliability. The center electrode combines a copper core for excellent electrical conductivity with a platinum tip that resists wear and extends service life. The ground electrode core is made of nickel, providing structural strength. With a pre-gap size of 1.0 mm and a flat seat type, this spark plug ensures proper sealing and fitment. The 20.6 mm hex size allows for easy installation using standard tools. Its manufacturer heat range of 20 suits a variety of engine operating conditions, making it suitable for vehicles such as the Ford Mustang, Subaru Impreza, and Mercedes-Benz 300SL.

About the Platinum TT Product Line

The Denso Platinum TT line is designed to deliver enhanced ignition performance through a twin-tip ground electrode configuration. This design improves ignitability and combustion efficiency compared to conventional spark plugs. The use of platinum on the center electrode tip increases durability and helps maintain consistent spark quality over time. The Platinum TT series is ideal for drivers seeking a balance of longevity and reliable ignition in secondary ignition systems.

Applications and Common Issues Addressed

• Replacement for worn or fouled spark plugs in compatible Audi, Honda, Toyota, and Volkswagen vehicles
• Helps resolve engine misfires caused by inconsistent spark delivery
• Improves cold start performance and throttle response
• Reduces electrical interference with onboard electronics due to 5000 ohm resistance
• Supports fuel efficiency by promoting complete combustion

Installation Notes and Tips

Before installation, verify the spark plug gap is set to the recommended 1.0 mm pre-gap size. Use a torque wrench to tighten the spark plug to the manufacturer’s specifications to avoid damage to the flat seat or threads. The 20.6 mm hex size is compatible with standard spark plug sockets. Ensure the engine is cool before removing old plugs to prevent thread damage. This spark plug is compatible with a wide range of vehicles including the Honda Accord, Toyota Camry, and Volkswagen Jetta, so confirm fitment with your specific model and year.

Quality Assurance and Warranty

Denso manufactures the Platinum TT 4502 spark plug to meet strict quality standards, ensuring consistent performance and durability. The use of premium materials such as platinum and copper contributes to long service life. While specific warranty details may vary, Denso products typically come with manufacturer-backed warranties covering defects in materials and workmanship.