High Output 175A Alternator for Porsche 911 (1984-89)

WOSP's upgraded high-output alternator for classic Porsche 911s has been tested at 150A amps on the standard 911 pulley and belt and with a simple installation process. With all parts manufactured in the UK, and assembled in the USA, this upgrade is the highest output alternator available for your classic Porsche 911.  The idle output is in excess of 75A!

This is a brand new unit, not rewound or reconditioned and there is no core charge or exchange.  Based on the proven Denso 6 phase 'hairpin' alternator, the casing has been custom designed to fit all 911 fan housing from 1965 to 1989.  The alternator offers superior efficiency and produces less heat than the original units. 

With so many electrical upgrades pushing old-school charging technology to the limit, WOSP's upgraded alternator for classic Porsche 911s is the perfect addition to a modern-day classic.

Used in conjunction with an electric A/C, this internally regulated alternator offers higher levels of cooling without compromising battery voltage. Fitting to our 911 demonstrator led to an instant increase of almost 10% in charging voltage. This may not sound like much, but it is huge in voltage terms: even half a volt can transform headlamp brightness, starter efficiency and battery health. For cars running additional electrical items such as bigger stereos and additional lighting, this is a game changer. 

The alternator is supplied with a 21mm adapter (10mm + 11mm) to suit the 3.2 Carrera and late Turbo models (1984 - 1989). All of our alternators come complete with heavy duty cables for positive and negative terminals.

*The actual output rating for this unit is 175A.  For sustained output above 150A we recommend a serpentine belt arrangement.