Denso 4504 Spark Plug

Overview of Denso Platinum TT Spark Plug 4504

The Denso Platinum TT spark plug 4504 is engineered for reliable ignition performance across a wide range of vehicles including Acura, BMW, Ford, 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
• Pre-gap size of 1.0 mm for precise spark delivery
• Hex size of 16.0 mm for standard installation tools
• Manufacturer heat range of 20 suitable for various engine conditions

Technical Features and Specifications

The Denso Platinum TT 4504 spark plug features a unique twin-tip ground electrode design enhanced with titanium, which helps maintain a stable spark and reduces electrode wear. The center electrode is constructed with a copper core to ensure excellent thermal conductivity, while the platinum tip provides long-lasting durability and consistent ignition performance. The single ground electrode uses nickel as its core material, balancing strength and conductivity. With a flat seat and a thread diameter of 14.00 mm, this spark plug fits securely in compatible engines. The 1.0 mm pre-gap size is factory set to optimize ignition timing and combustion efficiency.

About the Platinum TT Product Line

The Denso Platinum TT line is designed to deliver enhanced ignition reliability through its twin-tip technology. This design reduces misfires and improves throttle response by providing a more consistent spark. The use of platinum on the center electrode tip extends the service life of the spark plug, making it suitable for vehicles requiring durable ignition components. The Platinum TT series is compatible with a broad range of domestic and import vehicles, including models from Audi, Lexus, Nissan, and Subaru.

Compatible Vehicles and Applications

This spark plug is compatible with many popular makes and models such as the Toyota 4Runner, Honda Accord, Ford F-150, BMW 328i, and Volkswagen Jetta. It is suitable for secondary ignition systems requiring a 14 mm thread diameter and a 19 mm reach. The Denso Platinum TT 4504 is ideal for drivers seeking a reliable replacement spark plug for vehicles including Acura, Cadillac, Chrysler, Dodge, Hyundai, Infiniti, Jeep, Kia, Mazda, Mercedes-Benz, Mitsubishi, Porsche, Ram, Saab, Saturn, Scion, Subaru, Suzuki, and Volvo.

• Resolves engine misfires and rough idling
• Improves fuel efficiency by ensuring complete combustion
• Reduces spark plug fouling and electrode wear
• Enhances throttle response and acceleration smoothness
• Maintains consistent ignition under varied driving conditions

Installation Notes and Tips

Before installation, verify the spark plug gap is set to 1.0 mm as specified. Use a 16 mm socket wrench for proper tightening to avoid damage to the electrode or threads. Ensure the spark plug is compatible with the vehicle’s heat range (20) to prevent overheating or fouling. It is recommended to replace spark plugs in sets to maintain balanced engine performance. Always follow the vehicle manufacturer’s torque specifications during installation.

Quality Assurance and Warranty

Denso spark plugs, including the Platinum TT 4504, are manufactured to meet strict OEM standards for quality and durability. The use of premium materials such as platinum and copper ensures long service life and reliable ignition. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship. Consult the product documentation or manufacturer for exact warranty terms.