We get quite a few emails asking about Porsche part numbers and what they mean. The eleven digit numbers can be a bit of a mystery and knowing what they mean can be a big help when trying to track down that replacement part you need for your prize possession. Disclaimer: This is just a guide and should be used as such. Like every set of rules there are always exception and Porsche are famous breaking its own rules. Please add your thoughts and experiences in the comments area at the end of the article.
The Porsche Part Number system are made up of eleven digits (000-000-000-00). The are broken down into three groups of three digits and a final set of two digits.
Describing a part over the telephone to a supplier can work, but sometimes only the correct Porsche Part Number will do. Porsche maintain their own official Porsche (PET) Electronics Parts catalogue to make life easier. These PET catalogues are available in PDF format on the Porsche.com website and free to use and download. We have listed them all in one place to make it easy for you to find the one your looking for. Take a look at the List of Porsche PET catalogues.
This is normally quite straight forward. The first three digits normally correlate to the model type tat the parts for first designed for, such as the 911, 828, 964 etc. However Porsche have been known to use the same part number on another model type, so its not always as obvious as it may seem.
Some additional points to consider are:
The second set of three digits tell us more about the actual part we are looking for. The first of the three digits indicate which subsystem of the car the part belongs to i.e., transmission, engine, suspension etc. The second pair of digits normally refer to the diagram number in the parts catalogue itself. Ere are the main categories: 100 Engine; 200 Fuel and Exhaust; 300 Transmission; 400 Front Axle/Steering; 500 Rear Axle; 600 Wheels/Brakes; 700 Levers/Pedals; 800 Body; and 900 Electrical.
These third set of digits seem to be the code for the actual part number. We know of no particular relevance to these numbers or how they are defined. Perhaps one of our readers can share their knowledge.
The best way to describe the relevance of the last two digits is that they represent the Modification Number for the associated part. The original item will end in 00. Any subsequent modifications to the par's original specification means the number will increment by one digit. This could mean a material change, a finish change or something else. This is just a general guide. As mentioned earlier, there will be exceptions to the rule, but generally speaking this should serve you well. It's a good idea to get a copy of the PET catalogue for your particular model of Porsche. They are freely available for download from the Porsche website. We have placed links to each of the PET catalogues here.
Please feel free to add your own thoughts and experiences in the comments area below.
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