Denso 3006 Spark Plug

Denso 3006 U-Groove Conventional Spark Plug

The Denso 3006 is a conventional spark plug built around a U-groove ground electrode design for improved ignitability and more consistent combustion. It is a direct-fit ignition service part for select Toyota, Ford, Chevrolet, and Nissan applications, including Toyota Camry, Corolla, Celica, MR2, Supra, and Cressida coverage.

Key Features

• U-groove ground electrode tip design for stronger spark exposure
• 5000 ohm resistor for ignition noise suppression
• Copper center electrode core for efficient heat transfer
• Nickel center electrode tip and nickel ground electrode tip materials
• Standard ground configuration with one ground electrode
• Pre-gapped at 1.1 mm
• Flat seat design, 14.00 mm thread diameter, 19.00 mm reach, and 16.0 mm hex size
• Manufacturer heat range 16

Product Details

Denso U-Groove Conventional spark plugs are part of the U-Groove Conventional line, a traditional ignition service range focused on dependable spark delivery and OE-style fitment. The U-shaped ground electrode helps expose the spark kernel more effectively, which supports cleaner ignition in engines that call for this plug specification. Part number 3006 cross-references Denso Auto Parts Q16R-U11 and Toyota 90919-01129 for the same application.

Compatible With select Toyota Camry, Corolla, Celica, MR2, Supra, and Cressida applications, as well as certain Ford Taurus, Chevrolet Nova, and Nissan 200SX models. This Denso 3006 spark plug is specified for vehicles that require the listed thread, reach, seat, and heat range dimensions.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from weak or inconsistent spark delivery
• Misfire conditions related to aged ignition components
• Reduced fuel efficiency from incomplete combustion
• Loss of throttle response from degraded plug performance

Installation Notes and Tips

Verify the engine’s required thread diameter, reach, seat type, and heat range before installation. Check the pre-gap against the vehicle service specification and adjust only if the application calls for it. Inspect ignition wires, coils, and plug wells during service so the new plug can perform as intended. Use the vehicle manufacturer’s torque specification during installation.

Quality Assurance

Denso manufactures this spark plug to the listed OE-style dimensions and ignition specifications for the stated applications. The nickel and copper electrode construction, resistor design, and U-groove tip layout are engineered to meet the requirements of the original fitment standard.

• Fits 1989-1992 Toyota Cressida, N/A
• Fits 1986-1992 Toyota Supra, N/A
• Fits 1987-1991 Toyota Camry, N/A
• Fits 1989 Ford Taurus, N/A
• Fits 1986-1989 Toyota Celica, N/A
• Fits 1989 Toyota Corolla, N/A
• Fits 1985-1987 Toyota Corolla, N/A
• Fits 1985-1989 Toyota MR2, N/A
• Fits 1988 Chevrolet Nova, N/A
• Fits 1984-1987 Nissan 200SX, N/A