The Complete Guide to New Old Stock Porsche Parts

If you're restoring a classic Porsche or maintaining an older model, you've likely come across the term "new old stock" or NOS parts. These are original parts that were manufactured decades ago but never sold, still in their original packaging. For enthusiasts, NOS parts are a goldmine—they offer the same fit, finish, and quality that your car had when it left the factory. But finding and buying them requires knowledge and caution. This guide covers everything you need to know about new old stock Porsche parts: what they are, where to find them, how to avoid fakes, and how to decide if they're right for your project.

What Are New Old Stock Porsche Parts?

New old stock (NOS) refers to parts that were manufactured by Porsche or its original suppliers during the car's production era but never installed on a vehicle. They have remained unused in inventory—sometimes for decades—and are typically still sealed in their original boxes or packaging. NOS parts are distinct from reproduction parts (aftermarket copies) and used parts (taken from salvage cars). They offer the closest thing to a factory-fresh original component.

Why NOS Parts Matter for Restorations

For concours-level restorations or owners who want period-correct components, NOS parts are often the only way to achieve authenticity. Reproduction parts may have subtle differences in casting marks, finish, or dimensions. NOS parts guarantee the exact specifications and materials used when your Porsche was built. This is especially important for visible components like trim, badges, lenses, or interior pieces.

Advantages and Disadvantages of NOS Parts

Benefits

• Perfect fit: Since they were made to original factory tolerances, NOS parts bolt on without modification.
• Authentic appearance: Correct finishes, stamps, and packaging for concours judging.
• Quality: Often superior to modern reproductions, which may cut corners on materials or manufacturing.
• Long-term reliability: Many vintage Porsche parts have proven durability over decades.

Drawbacks

• Age: Rubber, plastic, and foam components can degrade over time, even if never used. Check for cracking, brittleness, or rust (on metal parts).
• Cost: NOS parts command a premium, sometimes significantly more than new OEM or aftermarket alternatives.
• Availability: Rare parts can be extremely hard to find, requiring patience and networking.
• No returns: Many sellers of NOS parts sell "as is" because of their age, so due diligence is essential.

How to Verify Authentic New Old Stock Porsche Parts

Counterfeit or misrepresented NOS parts are a real problem. Here's how to protect yourself.

Check the Packaging

Genuine Porsche NOS parts come in distinctive packaging that changed over the decades. Learn the typical box designs, part number fonts, and labeling for your car's era. For example, 1970s parts often have orange and black boxes with white labels. Look for correct part numbers, original barcodes (if applicable), and manufacturer stamps.

Inspect the Part

Authentic NOS parts show signs of age but not use. Look for:

• Natural patina or oxidation on metal (not rust pitting).
• Fading or yellowing on plastic or rubber (but not cracking).
• Original casting marks, part numbers, and manufacturer logos (e.g., Hella, Bosch, ZF). Compare with known photos from factory manuals or enthusiast forums.

Research the Seller

Buy from reputable dealers who specialize in Porsche parts and have a track record. Avoid sellers who offer too many NOS parts of the same rare item—it could indicate reproductions. Ask for detailed photos of the part and packaging. Many enthusiasts share known “tell” signs on forums like Pelican Parts or 911S Registry.

Watch for Red Flags

• Parts labeled “NOS” but with obvious signs of machining or refinishing.
• Packaging that looks too new or has incorrect printing.
• Prices that are too low (or too high) compared to market rates.

Where to Find New Old Stock Porsche Parts

Finding NOS parts takes effort, but these sources are worth exploring.

Specialty Porsche Parts Retailers

Several well-known businesses have been accumulating inventory for decades. Examples include:

• Stoddard: A long-time supplier of NOS and reproduction parts for 356 and 911 models.
• Sierra Madre Collection: Offers a wide range of NOS and OEM parts for Porsche.
• Pelican Parts: While they sell many new parts, they also have a section for NOS and hard-to-find components.

Porsche Classic Centers

Porsche’s own Classic division reproduces some parts, but they also still hold stock of original NOS parts. Contact your nearest Porsche Classic Center or dealer’s parts department. They can search global inventory for old stock.

Online Auction Sites and Forums

Be cautious but persistent. Sites like eBay have a large selection of NOS parts, but you must verify authenticity. Classifieds on enthusiast forums (Rennlist, 911S Registry, Early 911S Registry) are often better because sellers are known in the community.

Swap Meets and Car Shows

Events like the Hershey Fall Swap Meet (Pennsylvania) or the Pomona Swap Meet (California) are treasure troves. Bring cash, know your part numbers, and be ready to haggle. You can inspect parts in person before buying.

International Sources

Porsche parts often surface in Europe, especially Germany. Use search terms like "Porsche NOS originale Teile" on German eBay or visit classic car shops in Stuttgart. Shipping costs can be high, but for rare parts it may be worthwhile.

Tips for Buying New Old Stock Porsche Parts

• Know your part numbers: Use Porsche’s PET (Parts Electronic Catalog) or online databases to verify the correct number for your model and year. Bring a list when shopping.
• Ask about storage conditions: Parts stored in a climate-controlled environment age better. Avoid parts that have been in humid basements or hot attics.
• Test if possible: For electrical parts (switches, relays, sensors), ask if the seller can test them. Some NOS items may have died from sitting.
• Negotiate intelligently: Sellers know rarity, but if you buy multiple items you may get a discount. Don't lowball excessively, as NOS parts are often priced fairly.
• Secure shipping: Insure high-value parts and request careful packaging. Original boxes can be fragile.

Final Recommendation

New old stock Porsche parts are an excellent choice for concours restorations or when you need a perfect factory match. However, they are not always the best option for every situation. For daily drivers or track cars, consider high-quality reproduction parts that are more durable and cheaper. For critical safety items like brake calipers or suspension components, use newly manufactured parts from trusted brands because rubber and seals in NOS parts may have deteriorated.

If you decide to buy NOS, prioritize parts that are not subject to age-related failure: metal brackets, badges, trim, glass, and solid electrical components. Be prepared to invest time in research and verification. Build relationships with reputable dealers and fellow enthusiasts. With careful selection, NOS parts can add authenticity and value to your Porsche that reproductions simply cannot match.