Denso 3253 Spark Plug

Denso Double Platinum Spark Plug 3253

Denso Double Platinum spark plug 3253 is built for OE-level ignition performance, durability, and emissions control. It uses a platinum center electrode with a multi-electrode platinum chip ground design to support consistent spark delivery in demanding daily-driver applications.

Key Features

• Double Platinum design with platinum center electrode tip material
• Multi-electrode ground configuration with 2 ground electrodes
• 5000 ohm resistance for ignition system compatibility
• Copper center electrode core and nickel ground electrode core
• Pre-gapped to 1.1 mm
• 14.00 mm thread diameter, 19.00 mm reach, flat seat
• 16.0 mm hex size for standard service tools
• Manufacturer heat range 20

Product Details

As part of Denso’s Double Platinum line, this spark plug is engineered for vehicles that call for a platinum-tipped plug with a multi-electrode ground design. The construction supports stable ignition performance and helps maintain OE-style operation in applications such as Toyota Camry, Toyota Avalon, Lexus ES300, Toyota RAV4, Toyota Sienna, Toyota Solara, Porsche 911, Audi A6 Quattro, Audi S6, Audi A8 Quattro, and Audi S5. Part number 3253 also cross-references Denso Auto Parts PK20TR11 for the same application.

What It Helps Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weakened ignition output
• Misfire conditions related to plug wear or gap drift
• Reduced fuel economy from inconsistent combustion
• Emissions issues tied to degraded secondary ignition performance

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range before installation. Confirm the vehicle application against the listed fitment for your exact year and model, including 1996-2001 Lexus ES300, 1996-2001 Toyota Camry, 1996-1999 Toyota Avalon, 1998-2000 Toyota RAV4, 1998-1999 Toyota Sienna, 1999-2003 Toyota Solara, 2000-2005 Porsche 911, 2011 Audi A6 Quattro, 2011 Audi S6, 2011-2012 Audi A8 Quattro, and 2011-2012 Audi S5. Use the specified gap and follow the manufacturer’s service procedure for torque and inspection.

Quality Assurance

Denso manufactures this spark plug to meet strict OE performance, durability, and emissions standards. The Double Platinum design reflects Denso’s focus on factory-style ignition service for long-term reliability in the listed applications.