Denso 3301 Spark Plug

Denso Double Platinum Spark Plug 3301

Denso Double Platinum spark plug 3301 is built for OE-style ignition performance in a wide range of import and domestic applications. It uses a platinum chip ground electrode, a platinum center electrode tip, and a copper core to support consistent spark delivery and stable combustion.

The Double Platinum line is designed for drivers who want a direct replacement spark plug with durable electrode materials and OE-focused construction. For vehicles such as Toyota Corolla, Toyota Tacoma, and Nissan Pathfinder applications, this plug is a practical choice when restoring ignition performance and emissions control.

Key Features

• Double Platinum design with platinum on the center electrode tip and platinum chip ground electrode
• Copper center electrode core for efficient conductivity
• Nickel ground electrode core material with standard ground configuration
• 5000 ohm resistance for ignition system noise suppression
• Pre-gapped to 0.8 mm
• Flat seat design, 14.00 mm thread diameter, 19.00 mm reach, and 16.0 mm hex size
• Manufactured to OE performance, durability, and emissions standards

Detailed Description

Denso 3301 is a Double Platinum spark plug engineered for steady ignition performance and long service life in properly matched applications. The platinum electrode materials help maintain firing consistency over time, while the copper core supports reliable heat transfer and spark delivery. This makes it a strong OE-style replacement for vehicles that call for a 14 mm, flat-seat plug with a 19.00 mm reach.

Fitment includes 2015-2018 Toyota Prius C, 2001-2005 Toyota Echo, 1995-2000 Toyota Tacoma, 1993-1997 Toyota Corolla, 1990-1995 Nissan Pathfinder, and 2004-2006 Scion xB. This part cross-references DENSO Auto Parts PK16R8 for the same application.

What It Helps Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weak or inconsistent spark output
• Misfire conditions related to aged ignition components
• Reduced fuel economy from incomplete combustion
• Emissions issues tied to degraded spark plug performance

Installation Notes and Tips

Verify thread diameter, reach, seat type, and heat range before installation. Confirm the gap specification matches the vehicle application, and inspect ignition coils, wires, and boots for wear before installing new plugs. Use the vehicle service manual for torque and service procedures.

Compatible With 2015-2018 Toyota Prius C, 2001-2005 Toyota Echo, 1995-2000 Toyota Tacoma, 1993-1997 Toyota Corolla, 1990-1995 Nissan Pathfinder, and other listed applications in the fitment data. Additional coverage includes 2009-2011 Audi A6, 2004-2006 Scion xA, 2004-2005 Mazda Miata, 1996-1997 Lexus LX450, and 1993-1997 Toyota Land Cruiser.

Quality Assurance

Denso manufactures this spark plug to meet strict OE performance, durability, and emissions standards. The Double Platinum construction is intended to support consistent service life and dependable ignition performance in the specified applications.