Porsche Parts Microfiche: A Complete Guide for Classic Restoration

If you’re restoring a classic Porsche—anything from a 356 to a 964—you’ve probably run into the term "parts microfiche." These small film cards were the original digital parts catalog, used by dealers and mechanics for decades. Unlike modern online databases, a microfiche stores hundreds of pages of exploded diagrams and part numbers on a single sheet of transparent film. For vintage Porsche owners, knowing how to use a microfiche can be the key to tracking down that elusive NLA (no longer available) bracket or trim piece. This guide explains what a Porsche parts microfiche is, how to read one, where to find them, and how they compare to modern digital catalogs like PET.

What Is a Parts Microfiche for Porsche?

A parts microfiche is a flat sheet of photographic film, typically 105 x 148 mm (about 4 x 6 inches), that contains miniaturized images of parts catalog pages. Each fiche holds dozens of pages reduced to microscopic size. To view them, you need a microfiche reader—a device that magnifies the film and projects it onto a screen. Porsche issued microfiche sets for every model from the early 1970s through the mid-2000s, covering everything from the 911 series to the 928 and 944.

These microfiche sets were updated regularly with new part numbers, supersessions, and corrections. They were the standard reference for Porsche dealership service departments. The film itself is durable and can last decades if stored properly, but the readers are becoming obsolete. Still, many restorers swear by the original microfiche because the diagrams are crisp and accurate, often showing details missing from some digital reproductions.

The Role of Microfiche in Porsche Restoration

For a restoration to be correct, you need the original part numbers—not just what fits, but what was originally installed at the factory. Microfiche provides that. It includes not only the part number but also illustrations showing how parts fit together, torque specs, and sometimes even optional equipment codes. This level of detail is especially critical for concours-level restorations where even a wrong washer can cost points.

Because microfiche was the official dealer tool, the part numbers listed are the authentic Porsche numbers. Using a microfiche helps you avoid aftermarket parts that may look right but aren’t dimensionally identical. Many restorers keep a microfiche reader in their shop so they can cross-reference part numbers before ordering.

How to Read a Porsche Parts Microfiche

Reading a microfiche requires a bit of practice, but the system is logical. Here’s a step-by-step approach:

1. Identify the correct fiche. Each model has a set of multiple fiche cards, often labeled by group (e.g., engine, transmission, body). For example, a 1987 911 fiche might cover groups 1–9 on separate cards.
2. Load the fiche into a reader. Insert the card into the reader slot with the film side facing the lens. The image will appear on the screen.
3. Navigate using grid coordinates. Each page on the fiche has a grid reference, like "A1" or "C4." Most readers have a knob to move the film to the correct row and column. The index page on the fiche tells you which coordinate corresponds to which part group.
4. Read the part numbers. The diagrams use exploded views with balloons pointing to parts. Next to each balloon is a part number, often in a format like 911.123.456.78. Sometimes there are footnotes indicating supersessions (e.g., replaced by 993.XXX.XXX.XX).
5. Check the supersession list. The back of the fiche (or a separate fiche) often lists updated part numbers. Always verify that the number you found hasn’t been superseded before ordering.
6. Note optional equipment codes. If your Porsche has factory options, the fiche may include notes like "with code X70" indicating which parts apply.

If you don’t have a reader, you can try using a handheld loupe or even a smartphone camera zoomed in on the film, but this is cumbersome. Many restorers prefer to use a dedicated microfiche reader for clarity.

Finding Porsche Parts Microfiche

Original Porsche microfiche sets are still available from several sources:

• Porsche dealers and classic centers: Some dealerships still have old microfiche archives. You may be able to request a printout of a specific diagram.
• Specialty Porsche parts suppliers: Many businesses that cater to vintage Porsche restoration sell used microfiche sets. They often have spares from when dealers upgraded to digital systems.
• Online classic Porsche forums: Communities like Pelican Parts, Rennlist, or the 356 Registry have members who own fiche and may share scans or prints. You can also post a wanted ad.
• Auction sites and swap meets: While not a marketplace per se, you may find fiche at vintage car swap meets. They are often bundled with repair manuals.

Avoid buying a fiche if you don’t have a reader yet. A decent used microfiche reader can cost anywhere from $50 to $200. Some modern readers can also save digital images, acting as a bridge to a paperless shop.

Modern Alternatives: Digital Porsche Parts Catalogs

Porsche no longer releases microfiche for current models. Instead, they provide the Porsche Electronic Parts Catalog (PET). This is the official digital equivalent of the microfiche. PET is available on DVD or USB (for older versions) and is also accessible online through some subscription services. The PET includes the same diagrams and part numbers, but you can search by keyword or part number, zoom in, and print pages.

There are also third-party websites that have archived microfiche scans and converted them to PDF. These are convenient for quick lookup on a phone or tablet. However, be cautious: some scans are low resolution or missing pages. The original microfiche will always be the definitive source.

Advantages and Disadvantages of Digital vs. Microfiche

| Aspect | Microfiche | Digital (PET or scans) | |--------|------------|------------------------| | Clarity | Extremely clear if reader is good | Varies with scan quality | | Portability | Requires reader, but card is small | Accessible on any device | | Searchability | Manual coordinate searching | Instant text search | | Authenticity | Original dealer reference | Official PET is authentic; scans may be altered | | Cost | Fiche $20-100; reader $50-200 | PET subscription $50-200/year; free scans online | | Longevity | Film lasts decades if stored | Depends on file format and storage |

For the restorer who wants absolute accuracy, nothing beats the original microfiche. But for everyday parts ordering, a digital copy is more practical.

Tips for Using a Porsche Parts Microfiche Effectively

• Use a good quality fiche reader. Crappy readers with dim bulbs and scratched lenses make it impossible to read fine details. Look for a used Micro Design or Bell & Howell reader with a 420mm lens.
• Keep the fiche clean. Handle by the edges and store in a sleeve. Dust and fingerprints degrade the image.
• Use a reference chart. Tape a paper copy of the grid coordinates to your reader for quick navigation.
• Double-check supersessions. Just because the fiche shows a number doesn’t mean it’s still available. Call your dealer and confirm.
• Make prints if possible. Many readers have a printer port. Print the diagram you need and circle the part. This is safer than relying on memory.

Final Recommendation

If you own a classic Porsche from the 1970s through the early 2000s and plan to do serious restoration, invest in the correct microfiche set for your model and a used reader. The original diagrams are more accurate than many online scans, and having them in your shop gives you immediate reference without needing a computer. For daily parts ordering or if your model is well after 2000, the digital PET system is sufficient and more convenient. Whichever you choose, always cross-reference part numbers with a Porsche dealer to avoid ordering NLA parts. The microfiche remains an essential tool in the classic Porsche world—it’s the roadmap to authentic restoration.