The Complete Guide to Porsche Targa Top Parts: Restoration, Replacement, and Upgrades

If you own a classic or modern Porsche with a targa top, maintaining that iconic removable roof panel is essential for preserving both function and style. Porsche targa top parts range from rubber seals and latches to complete roof frames and glass panels. Whether you're restoring a 911 from the 1970s or repairing a 996/997 Targa, knowing the correct components and where to source them can save time and money. This guide covers the most common parts, compatibility notes, and practical advice for keeping your targa top working like new.

Understanding Porsche Targa Top Assembly

Porsche's targa design has evolved over decades, but the core components remain similar. A typical targa top consists of the roof panel (metal or fabric), a rear glass window, four corner latches, a front seal, rear seal, side seals, and various trim pieces. Early cars (911 and 912 from 1965–1976) used a manual removable fiberglass roof panel with a zip-out rear plastic window. Later models, like the 1980s 911 Cabriolet with targa hardtop option, and the 996/997 Targa (2002–2012) featured a large glass roof that slides rearward electrically. Each generation has specific parts that are not interchangeable.

Key Components and Their Functions

Roof Panel – The visible top portion. On early cars, it’s painted fiberglass; on later models, it’s a glass panel. If yours is dented, cracked, or faded, replacement is the best option. Aftermarket fiberglass panels are available for vintage models, often with improved UV resistance.

Rubber Seals and Weatherstripping – These prevent leaks and wind noise. The front seal attaches to the windshield header, the rear seal sits at the back window area, and side seals run along the door frames. Over time, rubber hardens and shrinks, causing water leaks. Replacing seals is one of the most common targa repairs.

Latches and Hardware – Each corner of the roof has a latch that secures the panel to the body. The front latches hook onto the windshield header, while rear latches engage with the roll bar. Springs, locking pins, and handles can break. Replacement latch sets are available for most models.

Rear Glass and Frame – On early targas, the rear window is a plastic zip-out piece that often cracks or yellow with age. Aftermarket glass or new plastic windows are available. For later targas with integrated glass, the entire glass assembly may be needed if sealed units fail.

Electrical Components (Modern Targas) – The 996/997 Targa has a motorized sliding glass roof. Parts like the drive cables, motor, and track assemblies can fail. These are dealer-only or specialized aftermarket items.

Sourcing OEM vs. Aftermarket Parts

When choosing Porsche targa top parts, you have three main sources: Original Equipment Manufacturer (OEM) from Porsche, OEM suppliers (like Webasto for roofs), and aftermarket specialists. OEM parts guarantee fit and quality but are expensive. Aftermarket parts vary widely; some are excellent, others cause more leaks. For critical seals and latches, many enthusiasts prefer OEM or high-quality aftermarket (e.g., URO Parts for rubber). For cosmetic parts like trim, aftermarket can be fine.

Where to Buy

Specialty Porsche restoration suppliers (like Pelican Parts, ECS Tuning, or FCP Euro) carry both OEM and aftermarket options. They often provide detailed fitment notes and part numbers. Porsche dealerships can order OEM parts but expect higher prices. Independent Porsche shops may have leads on used or NOS (new old stock) parts. Avoid generic “universal” seals; they rarely seal properly.

Common Replacement Parts by Model

Early 911/912 Targa (1965–1976)

• Roof panel: Original fiberglass panels are no longer produced, but aftermarket versions (e.g., from Restoration Design) are available. Ensure it’s reinforced to avoid cracking.
• Rear window: Plastic zip-in windows can be replaced with new plastic (heated or unheated) or converted to glass using a custom frame.
• Seals: Front roof seal (PN 911.561.101.20), side seals (left/right), and rear seal (PN 911.561.105.20). These are often sold in kits.
• Latches: Front latches (2) and rear latches (2). The spring-loaded mechanisms can be rebuilt with kits.

1980s 911 Targa (1977–1989)

• Roof panel: Still fiberglass but slightly different shape. Aftermarket panels exist.
• Seals: Updated design. The front seal is bonded to the roof, so replacement requires careful removal.
• Rear window: Larger and bonded. Leaks around the glass usually require new glass or resealing.

996/997 Targa (2002–2012)

• Glass roof: The entire glass panel is a sealed unit. If cracked or delaminated, replace as an assembly. Supplier: Porsche or Webasto.
• Drive motor and cables: Can be replaced without removing roof. Common failure: cable snaps. Parts from Porsche or aftermarket.
• Sunshade: Motorized shade can jam; replacement motor and roller available.
• Seals: Rubber around the glass opening; use OEM for proper fit.

Installation Tips for DIY Enthusiasts

Replacing targa top parts is moderate to difficult depending on the component. Seals and latches can be done in a driveway with basic tools, but a roof panel or glass replacement may require two people and specialist tools. Always clean and lubricate latch mechanisms with silicone grease. When installing new seals, test fit before applying adhesive – some seals require trimming. For early cars, ensure the roof panel is properly aligned to prevent wind noise and leaks.

Common Mistakes to Avoid

• Using the wrong seal profile: thickness and shape vary by year. Cross-reference part numbers.
• Over-tightening latches: can crack fiberglass or strip threads.
• Skipping sealant on glass panels: modern targas use butyl tape; use only recommended adhesive.
• Mixing parts from different generations: e.g., a 1972 roof will not fit a 1985 car.

Final Recommendations

For most Porsche owners, start by identifying exactly which parts you need – the easiest way is to look up your car’s diagram on a parts catalog site. For rubber seals, invest in OEM or high-quality aftermarket like URO Parts; they last years longer than cheap alternatives. For latches, a rebuild kit is often sufficient. For glass or roof panels, consider using a reputable restoration shop if you’re not comfortable with installation. If you want a hassle-free experience, complete targa top seal kits (e.g., from Pelican Parts) bundle all necessary rubber and often come with installation instructions. Remember that proper fitment is crucial – a poorly sealed targa top will let in water and noise, ruining the enjoyment of your Porsche.

Whether you’re restoring a classic 911 or maintaining a modern Targa, having the right parts and doing the job right the first time saves frustration. Use this guide as a starting point, consult your model-specific forum (e.g., Rennlist, Pelican Parts forum) for detailed procedures, and always double-check part numbers before ordering. With the right approach, your Porsche targa top can remain a beautiful and functional feature for many miles to come.