Denso 3253 Spark Plug

Reliable Ignition Performance for Select Audi, Lexus, Porsche, and Toyota Models

The Denso Double Platinum 3253 spark plug is engineered to deliver consistent ignition and efficient combustion for vehicles such as the Audi A6 Quattro, Porsche 911, Lexus ES300, and Toyota Camry. Designed with advanced materials and a multi-electrode configuration, this spark plug supports smooth engine operation and improved fuel efficiency.

• Multi-electrode ground configuration with two nickel core electrodes
• Center electrode features a copper core with a platinum tip for durability
• Pre-gap size of 1.1 mm optimized for precise ignition
• Flat seat type with 14 mm thread diameter and 19 mm reach
• Hex size of 16.0 mm for standard installation tools
• Manufacturer heat range rating of 20 for balanced thermal performance
• Resistance value of 5000 ohms to reduce electrical noise

Advanced Double Platinum Technology for Enhanced Durability

The Double Platinum line from Denso incorporates platinum on both the center and ground electrodes, which extends the service life of the spark plug compared to conventional designs. This technology reduces electrode wear and maintains stable spark performance over time, making it suitable for vehicles requiring reliable secondary ignition components. The multi-electrode design further improves ignition reliability by providing multiple spark paths.

Technical Details and Material Composition

This spark plug features a copper core center electrode with a platinum tip, which enhances thermal conductivity and wear resistance. The ground electrodes are made from nickel with platinum chips, arranged in a multi-electrode configuration to ensure consistent spark delivery. The flat seat design and precise thread diameter of 14 mm ensure proper fitment and sealing in compatible engines. The 1.1 mm pre-gap size is calibrated to optimize ignition timing and combustion efficiency.

Compatible Vehicles and Applications

• Compatible with Audi models including A6 Quattro, A8 Quattro, S5, and S6
• Fits Porsche 911 engines requiring secondary ignition spark plugs
• Suitable for Lexus ES300 and other models in the Lexus lineup
• Designed for Toyota vehicles such as Avalon, Camry, RAV4, Sienna, and Solara

Common Issues Addressed by Denso 3253 Spark Plug

• Misfiring or rough engine idle due to worn spark plugs
• Reduced fuel efficiency from incomplete combustion
• Difficulty starting the engine in cold conditions
• Engine hesitation or loss of power under acceleration
• Increased emissions caused by inefficient ignition

Installation Notes and Tips

When installing the Denso Double Platinum 3253 spark plug, ensure the engine is cool to prevent thread damage. Use a torque wrench to tighten the spark plug to the manufacturer’s specifications, typically around 20-25 Nm, to avoid over-tightening. Verify the pre-gap size of 1.1 mm before installation, although the spark plug comes pre-gapped. The 16 mm hex size allows for standard spark plug sockets during removal and installation.

Quality Assurance and Warranty

Denso spark plugs are manufactured to meet strict OEM standards, ensuring reliable performance and durability. The Double Platinum 3253 spark plug undergoes rigorous quality control to maintain consistent resistance and electrode integrity. While specific warranty details may vary, Denso products generally come with a limited warranty covering defects in materials and workmanship.