Denso 3007 Spark Plug

Denso 3007 U-Groove Spark Plug Overview

The Denso 3007 is a conventional spark plug built for direct-fit ignition service across a wide range of import and domestic applications. Its U-Groove electrode design is engineered to improve ignitability, helping support more efficient combustion in engines that call for this style of plug.

Common search terms for this part include Denso 3007 spark plug for Jaguar XJ8 and XJR, Volvo S80 and V70 spark plug replacement, and Mercedes-Benz E320 ignition service.

Key Features

• U-Groove ground electrode design for improved spark exposure
• 5000 ohm resistor for ignition noise suppression
• Nickel ground electrode tip with nickel center electrode tip
• Copper core center electrode for stable heat transfer
• Standard ground configuration with a flat seat
• 14.00 mm thread diameter, 19.00 mm reach, and 16.0 mm hex size
• Pre-gapped to 0.8 mm
• Manufacturer heat range 20

Product Details

Denso U-Groove Conventional spark plugs are part of the brand’s conventional ignition line, focused on dependable secondary ignition performance with a design that promotes better ignitability. The Denso 3007 uses a nickel electrode setup with a copper core center electrode to help maintain consistent spark delivery and thermal control in everyday driving conditions. This makes it a practical choice for owners servicing older European and domestic engines that specify this plug style.

This part cross-references Denso Auto Parts Q20PR-U for the same application.

What This Spark Plug Helps Address

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

Fitment Notes and Installation Tips

Compatible With 1998-2003 Jaguar Vanden Plas, N/A; 1988-1989 Jaguar Vanden Plas, N/A; 1998-2003 Jaguar XJ8, N/A; 1998-2003 Jaguar XJR, N/A; 1998-2003 Volvo C70, N/A; 2001-2003 Volvo S60, N/A; 2001-2003 Volvo V70, N/A; 1998-1999 Volvo V70, N/A; 2000-2002 Jaguar S-Type, N/A; 2000-2002 Jaguar XK8, N/A; 1997-1998 Jaguar XK8, N/A; 2000-2002 Jaguar XKR, N/A; 1999-2002 Volvo S80, N/A; 1999-2000 Volvo S70, N/A; 1999 Mercedes-Benz S420, N/A; 1996 Mercedes-Benz S420, N/A; 1998-1999 Mercedes-Benz S500, N/A; 1996 Mercedes-Benz S500, N/A; 1996-1999 Mercedes-Benz S600, N/A; 1995-1998 Dodge Stratus, N/A; 1997-1998 Mercedes-Benz C230, N/A; 1998 Mercedes-Benz CL500, N/A; 1998 Mercedes-Benz E320, N/A; 1998 Mercedes-Benz ML320, N/A; 1997-1998 Mercedes-Benz S320, N/A; 1998 Mercedes-Benz SL500, N/A; 1996 Mercedes-Benz SL500, N/A; 1996-1998 Mercedes-Benz SL600, N/A; 1998 Mercedes-Benz SLK230, N/A; 1998 Volvo S90, N/A; 1998 Volvo V90, N/A; 1997 Mercedes-Benz E320, N/A; 1992-1997 Volvo 960, N/A; 1995 Chrysler Sebring, N/A; 1994 Porsche 911, N/A; 1994 Volvo 850, N/A; 1990-1992 Volkswagen Golf, N/A; 1990-1991 Audi 90 Quattro, N/A; 1990-1991 Volkswagen Jetta, N/A; 1990-1991 Volkswagen Passat, N/A; 1987-1990 Jeep Cherokee, N/A; 1987-1990 Jeep Comanche, N/A; 1987-1990 Jeep Wagoneer, N/A; 1987-1989 Jaguar XJ6, N/A.

• Verify thread diameter, reach, seat type, and heat range before installation.
• Check the engine’s spark plug specification for any application notes, including models that require special plug placement or multiple plugs per cylinder.
• Inspect ignition wires, coils, and plug wells before installing new plugs.
• Use the specified gap if your service procedure calls for adjustment beyond the pre-gap setting.

Quality Assurance

This spark plug is built to Denso’s conventional ignition standards and uses a copper-core, nickel-electrode construction for consistent service in the listed applications. Confirm vehicle-specific requirements against the engine code and service information before installation.