Denso 3289 Spark Plug

Denso Double Platinum Spark Plug 3289

Denso Double Platinum spark plug 3289 is built for OE-style ignition performance in Toyota and Lexus applications. It uses a platinum center electrode, a multi-electrode ground design, and a 5,000-ohm resistor to support stable spark delivery and consistent combustion.

The Double Platinum line focuses on durability and long service life for secondary ignition systems. For drivers searching for a Denso 3289 spark plug for Toyota Tacoma, Tundra, 4Runner, or Lexus GS300 and SC300, this plug matches the OE-style fitment and construction used across a wide range of late-1990s and early-2000s vehicles.

Key Features

• Platinum center electrode tip for wear resistance and steady ignition performance
• Multi-electrode ground configuration with platinum chip tip design
• 5,000-ohm resistor to help control electrical noise
• Copper center electrode core and nickel ground electrode core
• Flat seat design with 14.00 mm thread diameter and 19.00 mm reach
• Pre-gapped to 1.1 mm for OE-style application matching
• Manufacturer heat range 16

Product Details

Denso 3289 is a Double Platinum spark plug engineered to meet strict OE performance, durability, and emissions standards. The platinum center electrode and multi-electrode ground setup are selected to maintain consistent spark characteristics under normal engine operating conditions. This makes it a direct-fit ignition service part for many Toyota and Lexus models, including Toyota Tacoma, Toyota Tundra, Toyota 4Runner, Lexus GS300, and Lexus SC300.

This part cross-references DENSO Auto Parts PK16TR11 and Toyota 90080-91145 for the same application.

What It Helps Address

• Rough idle caused by worn spark plugs
• Hard starting from weak ignition output
• Misfire conditions related to plug wear
• Reduced fuel economy from inconsistent combustion
• Loss of throttle response from degraded spark delivery

Installation Notes

Verify thread diameter, reach, seat type, and heat range before installation. Confirm the gap specification against the vehicle service information, especially when servicing Toyota Tacoma, Tundra, 4Runner, Corolla, Paseo, Tercel, T100, Sienna, Lexus GS300, or Lexus SC300 applications. Use proper spark plug removal and torque procedures to avoid thread damage and ensure correct sealing.

Quality Assurance

Denso manufactures this Double Platinum spark plug to OE performance, durability, and emissions standards for consistent service in secondary ignition systems.