Valeo 90160320602 Alternator Voltage Regulator External 55 Amp

The Valeo 90160320602 is an external alternator voltage regulator designed to maintain consistent charging system output in classic Porsche vehicles. This regulator works in conjunction with the 55-amp alternator, ensuring the electrical system receives a stable and properly regulated voltage supply to protect sensitive components and keep the battery properly charged.

The external design allows for straightforward serviceability — the regulator is wired in series with the alternator output circuit and can be replaced without removing or rebuilding the alternator itself. This makes it a practical, cost-effective solution when diagnosing charging system issues such as fluctuating battery voltage or inconsistent alternator output at idle.

Key Features:

• External voltage regulator for the 55-amp alternator
• Maintains consistent charging voltage to protect electrical components
• External mounting design allows for easy replacement without alternator removal
• OEM-quality construction for reliable, long-term performance
• Also referenced as part number 901-603-206-02 and cross-references to 90160320603

This voltage regulator is a direct-fit OEM replacement part, restoring proper charging system function to keep your classic Porsche running reliably.