Bosch Alternator Voltage Regulator for Porsche Boxster/Cayman/997 (2007–2011)

This Bosch alternator voltage regulator is a direct-fit replacement for Porsche Boxster/Cayman/997 applications listed in the fitment table below. It helps control alternator output and charging voltage so the vehicle electrical system stays within the expected operating range.

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.

Technical Details

• Manufacturer part number: 1-986-AE0-112
• Type: Alternator voltage regulator
• Application range: Porsche Boxster/Cayman/997 (2007–2011)
• Function: Helps maintain stable charging system output

Fitment & Compatibility

Use the fitment table below to confirm Porsche model, year, and submodel coverage. Where Porsche fitment changes by engine, trim, or production range, the table is the best place to verify the exact application before ordering.

If you want a second set of eyes on fitment before ordering, send us your VIN. We have been working with Porsche brake and parts applications for over 20 years, and we still take fitment questions seriously.