Bosch Ignition Rotor for Porsche 928 (1985–1987)

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This Bosch Ignition Rotor is a direct-fit replacement for Porsche 928 applications listed in the fitment table below. It transfers ignition voltage from the distributor cap to the correct cylinder as the distributor shaft turns. 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.A worn rotor can cause hard starting, misfire, weak spark, or erratic ignition performance. Replacing it during cap-and-rotor service helps restore consistent spark delivery.Technical Details Manufacturer part number: 1-234-332-386 Part type: Ignition rotor Bosch direct-fit rotor for 928 distributor ignition service Replace with the matching cap if terminal wear or carbon tracking is present Fitment & CompatibilityUse the fitment table below to verify the exact 928 year coverage before ordering.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 still matter because they do. Year Make Model Submodel Notes 1985 Porsche 928 1986 Porsche 928 1987 Porsche 928 Show more