Bosch WR7DC+ Super Plus Spark Plug
The OE plug for the air-cooled Porsche 911 Carrera 3.2. A copper / yttrium core plug built to deliver reliable ignition, clean combustion and smooth running. Sold individually — one plug per unit.
Porsche fitment
1984–1989 Porsche 911 Carrera 3.2 (Motronic). This is the factory-specified plug, OE part number 999-170-156-90.
How many do I need?
6 per car. Order quantity 6 for a complete tune-up. Gap to spec before installing. WR8DC is the one-step-colder alternative for track use.
Key benefits
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Copper / yttrium core – excellent heat dissipation and stable ignition
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OE-grade quality – the plug Porsche specified from the factory
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Wide compatibility – also serves many classic European cars and motorcycles
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Budget-friendly – premium performance at a great price point
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Easy installation – standard thread design for quick replacement
Other applications
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Volkswagen – Beetle, Golf, Jetta
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Mercedes-Benz – 190E, 300E, 500SL
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Volvo – 240, 740, 940
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Saab – 900, 9000
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Land Rover – Defender, Discovery, Range Rover
This plug fits many classic European and import models. Send us your VIN or model info for confirmation.
Part numbers
- Bosch WR7DC+ / 7900
- 999 170 156 90 · 999-170-156-90 · 99917015690
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