Bosch Spark Plug WR7DC+ for Porsche 911/912E/924/928/944/968 (1976–1995)

This Bosch Spark Plug is a direct-fit replacement for Porsche 911, 912E, 924, 928, 944, and 968 applications listed in the fitment table below. It provides the specified heat range and electrode design for the engines shown in the fitment table below. Bosch has been a global leader in automotive technology since 1886, pioneering innovations like electronic fuel injection and oxygen (lambda) sensors that shaped modern engine management. Today, Bosch supplies OEM-quality sensors, engine electronics, ignition components, and braking parts found in vehicles worldwide. Known for precision engineering and reliable performance, Bosch parts are built to factory specifications for dependable fitment and long-term durability.

Old plugs can lead to rough idle, misfire under load, and poor cold-start behavior. Replacing plugs with the correct Bosch specification keeps service work straightforward.

Technical Details

• Manufacturer part number: 7900
• Part type: Spark plug
• Bosch plug family: WR7DC+
• Yttrium-enhanced Bosch service plug commonly cataloged for late air-cooled and front-engine Porsche applications

Fitment & Compatibility

Use the fitment table below to confirm the exact model and year, especially if you are ordering for 928, 944 Turbo, or 968 applications.

If you need help sorting out the correct part for your Porsche, send us your VIN. We have been helping Porsche owners and shops with fitment questions for over 20 years, and the small details matter.