Porsche Soft Window Targa Parts: Complete Guide to Sourcing and Replacing

Owning a classic Porsche Targa with the original soft rear window is a badge of honor among enthusiasts. These early cars (1965–1970) feature a removable fiberglass roof panel and a plastic rear window that unzips or folds down. Over time, the soft window yellows, cracks, or shrinks, and the surrounding hardware wears out. This guide covers everything you need to know about sourcing and replacing Porsche soft window Targa parts for your 911 or 912.

Understanding the Soft Window Targa System

The soft window Targa was used on Porsche 911 and 912 models from 1965 through 1970 (and on 914/6 models in some markets). Unlike later fixed-glass Targas, these cars have a zippered plastic window that can be removed or lowered for open-air driving. The system consists of:

• The soft plastic window itself
• The zipper assembly (attached to the window and the roof frame)
• The fiberglass roof panel (often called the "targa top")
• The rear folding frame (a metal or plastic structure that supports the window when erect)
• Seals and weatherstripping around the window and roof panel
• Latch hardware and tension cables

Each component is a wear item. The plastic window is especially vulnerable to UV damage and temperature cycling. If your soft window is cloudy, cracked, or doesn't seal properly, it's time to replace it.

OEM vs Aftermarket Soft Window Parts

OEM Parts (Porsche Classic)

Porsche Classic still produces some soft window Targa parts, but availability is limited. The original plastic window (part number 911.541.901.00) is often out of stock. OEM zippers and seals are expensive but offer exact fitment. For a concours restoration, OEM is the gold standard, but be prepared for long lead times and high prices.

Aftermarket Parts

Several specialty suppliers produce high-quality reproduction soft window Targa parts. Brands like Stoddard, Pelican Parts, and Sierra Madre Collection offer windows made from modern materials (UV-stabilized vinyl or acrylic) that last longer than the originals. Aftermarket zippers are often upgraded with larger teeth or brass construction for better durability. Expect to pay $150–$400 for a replacement window, depending on material and brand.

Pros of aftermarket:

• Better UV resistance and clarity
• Reinforced zippers
• Usually in stock
• Lower cost

Cons:

• May need minor trimming for perfect fit
• Material may differ slightly from original sheen

Key Components to Inspect and Replace

1. The Soft Window

The centerpiece of the system. When buying a replacement, measure your existing window or confirm your car's year and model. Early 911 Targa windows are not interchangeable with 912 windows or later Targa models. Look for windows with a factory-style zip pattern and correct hole spacing. Some aftermarket windows come with a pre-installed zipper; others require you to have your old zipper sewn onto the new window.

2. Zipper Assembly

The zipper is the most stressed part. If the teeth are missing or the slider is stuck, you'll need a new zipper track. You can buy a complete zipper assembly (including the cloth tape) and have it sewn onto your existing window by an upholstery shop. Alternatively, some suppliers sell the zipper pre-attached to the window.

3. Roof Panel and Latches

The fiberglass roof panel can develop cracks around the latch receivers. Check for hairline cracks near the front mounting pins. Replacement roof panels are available from aftermarket suppliers, but they are expensive ($800–$1200). Often, you can repair cracks with fiberglass resin. Latch kits include new springs, pins, and handle assemblies.

4. Weatherstripping and Seals

Soft window Targas use a perimeter seal around the roof panel and a separate seal along the rear window channel. Over time, these harden and leak. Replace all seals when you swap the window to prevent water ingress. Aftermarket seal kits are affordable ($50–$150) and include the necessary foam and rubber strips.

5. Folding Frame and Tension Cables

The rear folding frame (the metal or plastic structure that the window zips to) can sag or break. Tension cables run from the frame to the body to hold the window taut. If your window doesn't stay up or wrinkles, inspect these cables. Replacement cables are available and relatively easy to install.

Installation Tips for DIY Owners

Replacing the soft window is a moderate DIY job if you have basic mechanical skills and patience. Here's an overview:

1. Remove the roof panel – Unlatch and lift off the fiberglass top. Store it safely.
2. Remove the old window – Unzip the window from the frame. You may need to remove screws holding the zipper track to the body.
3. Inspect the frame and seals – Clean the channel and replace deteriorated weatherstripping.
4. Install the new window – Zip the new window onto the frame. If the zipper isn't pre-attached, you'll need to sew it onto the window fabric first.
5. Adjust tension – Tighten the tension cables so the window sits snugly without wrinkles.
6. Reinstall the roof panel – Test the latches and adjust as needed.

Most aftermarket windows come with installation instructions. If you're unsure, consult a classic Porsche specialist.

Where to Buy Porsche Soft Window Targa Parts

Specialty retailers (not marketplaces) are your best bet:

• Stoddard NLA – Comprehensive selection of OEM and reproduction parts for 356 and early 911.
• Pelican Parts – Wide inventory of Targa soft window parts, including seals and hardware.
• Sierra Madre Collection – Specializes in early 911 restoration parts, including soft windows.
• Classic 9 – Carries performance-oriented Targa components.
• Mittle Motor Works – Focuses on 912 and 914 parts, but stocks many soft window items.

Call or email them with your VIN to confirm fitment. Many also offer used original parts for concours builds.

Final Recommendation

For most owners, a high-quality aftermarket soft window from a reputable supplier offers the best balance of cost, durability, and fitment. Pair it with a new zipper assembly and fresh seals to ensure leak-free operation and a crisp appearance. If you're restoring a numbers-matching car for judging, source OEM parts through Porsche Classic or a specialist dismantler. Either way, carefully inspect your folding frame and tension cables—these often go unnoticed until the new window is installed.

Take your time, measure twice, and don't hesitate to hire a professional upholstery shop for the zipper sewing. Soft window Targa parts are available, and with proper care, your Porsche will enjoy many more miles of open-air driving.