Denso 3009 Spark Plug

Denso 3009 Spark Plug for Asian Vehicle Applications

The Denso 3009 is a conventional spark plug built for reliable secondary ignition performance in select Lexus, Toyota, and Nissan applications. Its U-Groove ground electrode design supports stronger ignitability, helping promote more complete combustion and smoother engine operation.

As part of Denso’s U-Groove Conventional line, this spark plug focuses on practical OE-style performance with a copper core center electrode, nickel tip materials, and a standard ground configuration. It is a direct-fit choice for drivers searching for a Denso 3009 spark plug for 1985-1993 Nissan Maxima, 1987-1988 Nissan 200SX, 1987-1989 Nissan Pulsar NX, 1988-1989 Toyota MR2, 1988-1993 Toyota Camry, 1990-1991 Lexus ES250, or 1992-1993 Lexus ES300 applications.

• U-Groove ground electrode design for improved ignitability
• Copper core center electrode for consistent spark delivery
• Nickel center and ground electrode tip materials
• 5000 ohm resistance for standard ignition system operation
• Pre-gapped at 1.1 mm
• 14.00 mm thread diameter, 19.00 mm reach, flat seat, 16.0 mm hex
• Manufacturer heat range 20

U-Groove Conventional Product Line

Denso’s U-Groove Conventional spark plug line is engineered around a shaped ground electrode that improves spark exposure at the gap. That design helps support efficient ignition in older import engines where stable combustion and dependable starting are important. The Denso 3009 follows that approach with conventional materials and OE-style dimensions for the listed Lexus, Toyota, and Nissan fitments.

Vehicle Fitment

• Fits 1992-1993 Lexus ES300, N/A
• Fits 1990-1991 Lexus ES250, N/A
• Fits 1988-1993 Toyota Camry, N/A
• Fits 1988-1989 Toyota MR2, N/A
• Fits 1987-1988 Nissan 200SX, N/A
• Fits 1987-1989 Nissan Pulsar NX, N/A
• Fits 1985-1988 Nissan Maxima, N/A

What This Spark Plug Helps Address

• Hard starting caused by worn or inefficient spark plugs
• Rough idle from weak or inconsistent ignition output
• Misfire conditions related to degraded plug electrodes
• Reduced combustion efficiency in aging ignition systems
• Maintenance replacement for specified Lexus, Toyota, and Nissan engines

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range against the vehicle’s service specifications before installation. Check the gap against the engine requirement even though the plug is pre-gapped at 1.1 mm, and inspect ignition wires or coils for wear that could affect spark quality. The Denso 3009 is a direct replacement for the listed applications and cross-references DENSO Auto Parts Q20R-U11 for the same application.

Quality Assurance

Denso manufactures ignition components to OE-level dimensional and performance standards for import vehicle applications. This spark plug uses a nickel-tipped U-Groove design with a copper core center electrode to support dependable ignition performance in the specified Lexus, Toyota, and Nissan models.