Denso 3117 Spark Plug

Denso Double Platinum Spark Plug 3117

Denso Double Platinum spark plug 3117 is built for OE-level performance, durability, and emissions control in select Asian vehicles. It is a direct-fit ignition component for applications such as Toyota Camry, Lexus ES300, Lexus ES250, Nissan Maxima, and Nissan 200SX.

Key Features

• Double Platinum design with a platinum center electrode tip and platinum chip ground tip
• Copper center electrode core for stable conductivity
• Nickel ground electrode core with a standard ground configuration
• 5000 ohm resistance for ignition system compatibility
• Pre-gapped to 1.1 mm for the specified application
• Flat seat, 14.00 mm thread diameter, 19.00 mm reach, and 16.0 mm hex size
• Manufacturer heat range 20

Detailed Description

The Denso Double Platinum 3117 spark plug is engineered to meet strict OE performance, durability, and emissions standards. Its platinum-on-platinum electrode design helps maintain consistent spark characteristics over time, while the copper core supports efficient heat transfer and dependable ignition performance. This makes it a practical OE-style replacement for older Toyota and Nissan applications, including 1988-1993 Toyota Camry, 1992-1993 Lexus ES300, and 1985-1988 Nissan Maxima.

For buyers searching for Denso 3117 spark plug fitment for Toyota Camry or Lexus ES300 ignition service, this part matches the listed factory-style dimensions and electrical characteristics. It also cross-references DENSO Auto Parts PQ20R for the same application.

What It Helps Address

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

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range before installation. The pre-gap size is 1.1 mm, but final installation should still follow the vehicle service specification for the exact engine application. Use proper torque procedures and inspect ignition wires, coils, and plug wells during service to avoid repeat misfire concerns. Confirm fitment for the specific model year, including 1987-1989 Nissan Pulsar NX, 1988-1989 Toyota MR2, and 1987-1988 Nissan 200SX.

Quality Assurance

Denso manufactures this spark plug to OE performance, durability, and emissions standards, supporting consistent service life and factory-style operation in the listed applications.