Denso 4508 Spark Plug

Overview of Denso Platinum TT Spark Plug 4508

The Denso Platinum TT spark plug 4508 is engineered for reliable ignition performance across a wide range of vehicles including Acura, 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 spark
• Copper core center electrode for optimal conductivity
• Flat seat type with 19mm reach and 14mm thread diameter
• Heat range 20 suitable for various engine conditions
• Hex size 16mm for standard installation tools
• Resistance of 5000 ohms to reduce electrical noise

Technical Features and Materials

This Denso spark plug features a platinum tip on the center electrode, which enhances wear resistance and maintains a consistent spark gap over time. The copper core center electrode improves thermal conductivity, helping to dissipate heat efficiently. The ground electrode is nickel-based with a titanium enhanced twin-tip design, providing a stable and reliable spark path. The pre-gap size is set at 1.0 mm, optimized for precise ignition timing. The flat seat design ensures proper sealing in compatible engines, while the 19 mm reach and 14 mm thread diameter match OEM specifications for many Acura, Honda, and Toyota models.

About the Platinum TT Product Line

The Denso Platinum TT line focuses on secondary ignition components that combine platinum and titanium materials to enhance spark plug longevity and ignition stability. The twin-tip ground electrode design reduces quenching and improves ignitability, making it suitable for vehicles requiring consistent performance under varied driving conditions. This product line is engineered to meet or exceed OEM standards for fit and function.

Compatible Vehicles and Applications

This spark plug 4508 is compatible with a broad range of makes and models, including Acura Integra, Honda Civic, Toyota Camry, Volkswagen Golf, and others. It is designed for use in vehicles requiring a 14 mm thread diameter, 19 mm reach, and a heat range of 20. Common applications include:

• Resolving misfires and rough idling
• Improving cold start performance
• Reducing engine hesitation during acceleration
• Maintaining fuel efficiency by ensuring complete combustion
• Replacing worn or fouled spark plugs in secondary ignition systems

Installation Notes and Tips

When installing the Denso Platinum TT spark plug 4508, ensure the engine is cool to prevent thread damage. Use a torque wrench to tighten the spark plug to manufacturer specifications, typically around 18-22 ft-lbs, to avoid over-tightening. Verify the pre-gap size of 1.0 mm before installation, adjusting if necessary to match vehicle requirements. The 16 mm hex size allows for standard spark plug sockets. Always inspect the spark plug threads and seat for cleanliness to ensure proper sealing.

Quality Assurance and Warranty

Denso spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Platinum TT spark plug 4508 undergoes rigorous testing for heat range accuracy, electrode wear, and electrical resistance. While specific warranty details may vary, Denso products typically come with a limited warranty against manufacturing defects when installed according to guidelines.