Champion 335 Spark Plug

Champion Copper Plus 335 Spark Plug

Champion Copper Plus 335 is a replacement spark plug built for dependable ignition performance and stable heat control. It uses a copper core electrode for improved conductivity, along with nickel center and ground electrode tip materials for consistent wear in secondary ignition service.

Compatible With 2007-2009 Porsche 911, 1987-1992 Toyota Supra, and 1991 Isuzu Impulse applications that call for plug type RC10YC. The Champion 335 is a practical choice for drivers servicing classic and performance-oriented engines that require a flat-seat spark plug with a 0.030 pre-gap.

Key Features

• Copper core electrode for strong conductivity and heat management
• Nickel center and ground electrode tip materials
• J-gap ground electrode design with one ground electrode
• Resistor spark plug for ignition system noise control
• Flat seat design with 0.75 reach and 14 mm thread diameter
• Hex size 0.625 in. / 15.880 mm for standard service tools
• Manufacturer heat range 10
• Plug type RC10YC

Product Details

The Champion Copper Plus line focuses on straightforward, durable ignition service with a copper core that helps carry current efficiently and manage combustion heat. On this Champion 335 spark plug, the J-gap electrode layout and nickel construction support steady spark delivery, while the resistor design helps reduce electrical interference in the ignition circuit. For owners searching for a Champion 335 spark plug for Porsche 911, Toyota Supra, or Isuzu Impulse maintenance, this part matches the listed OE-style applications and plug specifications.

This part cross-references Anchor 2351 for the same application.

Common Issues This Part Can Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent spark delivery
• Misfire conditions tied to aged ignition components
• Reduced throttle response from degraded plug performance
• Excessive ignition noise in resistor-equipped systems

Installation Notes and Tips

Verify the vehicle’s required plug type, seat style, and gap before installation. This plug is pre-gapped at 0.030 in., but application-specific service data should always be checked for the exact engine requirement. Use the correct hex size and tighten to the manufacturer’s specification for the vehicle. Confirm that the ignition system calls for a flat-seat, resistor spark plug with 14 mm threads and 0.75 reach.

Quality Assurance

Champion Copper Plus plugs are built around a copper core electrode for conductivity and heat control, with nickel electrode materials selected for dependable wear in routine service. The 335 part number is listed for confirmed fitment on 2007-2009 Porsche 911, 1987-1992 Toyota Supra, and 1991 Isuzu Impulse applications.