WR78 Bosch Super 4 Spark Plug x4

The state-of-the-art surface air-gap principle is used in these high-performance WR78 Bosch Super 4 Spark Plugs. It's the first spark plug to feature four thin ground electrodes and a silver-plated core electrode that's been sharpened.

Super 4 - The Perfect Upgrade

• Improved ignition
• Reliable engine protection
• Improved fuel efficiency
• Better acceleration
• Better engine response

  Features:

• Surface gap technology
• 4 Thin ground electrodes
• Nickel-plated shell with rolled threads
• Ribbed insulator design
• Pre-gapped
• Copper core

  Benefits:

• Prevents carbon fouling and enables self-cleaning
• Less quenching, less energy loss and superior fuel efficiency
• Provides complete anti-seize and corrosion protection
• Prevents misfires due to flash-over
• No need to gap for faster installation
• Provides broader heat range to resist pre-ignition and fouling

• KIA
• MG
• FIAT
• Peugeot
• Volkswagen