200-amp & 175-amp Alternators for Late-Model Porsche® 928
The power to drive the Accessories you want!
200-amp application: Porsche® 928 1985 through 1995 all
175-amp application: Porsche® 928 1978 through 1984
Background: The first Porsche® 928's were introduced with 90 amp alternators. When these were found to be too weak for the options-ladened Porsche® Luxury Sports Sedan, they upped it to a 115-amp alternator to try to solve the problem.
Today's 928: Even in ideal circumstances on a new 928, the 115-amp alternator was too small. Now, 20 years later - with older wiring and higher impedance - its way too small. PLUS - you may have added big stereos, cell-phone chargers, radar detectors, and other accessories to our beloved 928 that did not even exist back then.
Many 928 owners report that their alternator will not even charge at idle - they must rev the engine to get it to charge at all. This kit will fix that - and the difference in the electric windows and sun roof, headlamp brightness, etc is AMAZING .
Better Design, Better Materials: You know that the World has not stood still since our 928's were born... but continuing to install factory-replacement alternators in your 928 is preventing you from accessing any of the new alternator technology. Our alternator is made from ALL NEW PARTS, is more compact, and is more durable. The cooling "bucket" on your old alternator is no longer needed and can be removed. Our custom 928 alternator mounts up to the stock 928 brackets without modification, and uses the stock wiring harness too.
We even provide a 1-year free replacement warranty with each alternator sold.
The 200-amp Alternator Kit Includes:
- NEW custom 200 amp SAE-rated alternator
- Custom welded Porsche® 928 mounting adapter bracket
- Wiring Harness Adapter
- Complete Installation Instructions
The 175-amp Alternator Kit Includes:
- NEW custom 175 amp SAE-rated alternator
- Custom welded Porsche® 928 mounting adapter bracket
- Wiring Harness Adapter
- Complete Installation Instructions
If your alternator has a 4-rib or 5-rib pulley: Simply remove the V-Belt pulley provided and replace with the ribbed pulley from your old alternator.
How Alternators are Rated:
Our alternators are SAE-rated, just like the OEM Porsche® alternators are. All alternators produce less as they heat up, so under-hood temps lower the output of the alternator. This is why the Society of Automotive Engineers test them in a lab - to remove the temperature variable. A 200 Amp SAE alternator will produce about 175 Amps in a hot engine compartment. The original 115 Amp alternator produced about 85 amps under the same circumstances.
