plug Genuine Porsche part 99970311940

The OE Match Rubber Stop for Rear Lid is a replacement rubber buffer designed to support and cushion the rear lid when closed.

Fits:

• Porsche Boxster 986 2.5L 1997-99
• Porsche Boxster 986 2.7L 1999-02
• Porsche Boxster S 986 3.2L 1999-02
• Porsche Boxster 986 2.7L 2003-04
• Porsche Boxster S 986 3.2L 2003-04
• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)
• Porsche 996 C2 3.4L 1997-08/01
• Porsche 996 C4 3.4L 1997-08/01
• Porsche 996 C2 3.6L 09/01-2005
• Porsche 996 C4 3.6L 09/01-2005
• Porsche 996 C4S 3.6L 09/01-2005
• Porsche 996 TURBO 2000-05
• Porsche 996 GT2 2001-05
• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>
• Porsche 996 GT3 RS 2003-04
• Porsche 997 MK1 Carrera 2 3.6L 2005-08
• Porsche 997 MK1 Carrera 2S 3.8L 2005-08
• Porsche 997 MK1 Carrera 4 3.6L 2005-08
• Porsche 997 MK1 Carrera 4S 3.8L 2005-08
• Porsche 997 MK1 TURBO 2007-09
• Porsche 997 MK1 GT3 / GT3 RS 2007-09
• Porsche 997 MK1 GT2 2007-09
• Porsche 997 MKII Carrera C2 3.6L 2009-12
• Porsche 997 MKII Carrera C4 3.6L 2009-12
• Porsche 997 MKII Carrera C2S 3.8L 2009-12
• Porsche 997 MKII Carrera C4S 3.8L 2009-12
• Porsche 997 MKII GT3 / GT3 RS 2010-11
• Porsche 997 MKII Turbo 2010-13
• Porsche 997 MKII GT2 RS 2011-13
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12
• Porsche 944 2.5L 8V 1982-87
• Porsche 944 2.7L 8V 1988-89
• Porsche 944S 2.5L 16V 1987-88
• Porsche 944S2 3.0L 16V 1989-91
• Porsche 944 Turbo 2.5L 8V 1985-88
• Porsche 944 Turbo 2.5L 8V 1989-91
• Porsche 944 Turbo S 2.5L 8V 1988
• Porsche 968 3.0L 1992-94
• Porsche 968 Sport 3.0L 1994-95
• Porsche 968 CS 3.0L 1993-95
• Porsche 968 Turbo S 3.0L 1993-94
• Porsche 928 4.5L 1978-82
• Porsche 928S 4.7L 1981-83
• Porsche 928S2 4.7L 1984-86
• Porsche 928S4 5.0L 1987-92
• Porsche 928GT 5.0L 1989-91
• Porsche 928GTS 5.4L 1992-95  

Mounted at the rear lid or body contact point, the rubber stop helps prevent direct metal-to-metal contact while supporting correct lid positioning. It also helps absorb vibration and minor movement when driving, reducing rattles and protecting surrounding bodywork and latch components from unnecessary impact.

As rubber components age, they can harden, crack, flatten or disappear altogether. Replacing a deteriorated rear lid stop is a simple but important way to restore correct closure, reduce unwanted noise and maintain proper panel positioning.
What This Product Does:
The rear lid rubber stop acts as a small cushioning and support point between the lid and surrounding body structure.

When the lid is closed, the stop compresses slightly to support the panel and absorb movement. This helps keep the lid stable while preventing hard contact between painted or metal components.

Its main functions include:

• Cushioning the rear lid when it closes
• Preventing direct metal-to-metal contact
• Helping support correct rear lid positioning
• Reducing movement and vibration while driving
• Helping prevent rattles and knocking noises
• Protecting surrounding paintwork and body panels
• Reducing unnecessary load and movement at the latch
• Helping maintain consistent panel gaps
• Providing a more solid and refined closing action

Although it is a small component, the rubber stop contributes to both correct panel fit and everyday refinement.
Symptoms Of Wear Or Failure:
Rubber stops deteriorate naturally through age, heat, compression and exposure to moisture and environmental contaminants.

Common symptoms of a worn or failed rear lid rubber stop include:

• Rubber becoming hard or brittle
• Cracks or splits in the stop
• Stop becoming flattened or permanently compressed
• Pieces of rubber breaking away
• Stop missing completely
• Rear lid rattling over uneven roads
• Knocking or tapping noises from the rear lid
• Excessive movement when the lid is closed
• Lid sitting slightly too low or unevenly
• Poor or inconsistent panel gaps
• Rear lid requiring adjustment to close correctly
• Paint marks or contact points where the lid touches surrounding bodywork
• Increased strain or movement at the latch
• A harsher closing action than normal

Similar symptoms can also result from incorrect latch adjustment, worn hinges or other missing buffers, so the complete rear lid mounting and closure system should be inspected where necessary.
Why Replacement Matters:

• A rear lid should remain securely supported when closed. If the rubber stop becomes compressed, hardened or missing, the panel can move more than intended.
• This movement can create rattles and knocking noises and may allow the lid to contact surrounding bodywork. Over time, repeated contact can damage paintwork and create unnecessary wear around the lid, latch and mounting points.
• A deteriorated stop can also affect how the rear lid sits when closed, potentially resulting in uneven panel gaps or poor alignment.
• Replacing worn rubber stops helps restore the correct cushioning effect and supports the lid in its intended position. This can improve closure quality, reduce unwanted vibration and protect valuable surrounding bodywork.
• For older Porsche models, replacing aged rubber buffers is also worthwhile during restoration, as decades-old rubber may appear intact while having become significantly hardened or compressed.

Plastic Rivet for Targa Seal 
Sold each - 4 required per car

OE Match replacement plastic rivet for securing the Targa roof seal.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 964 (911) C2 1989-93
• Porsche 964 (911) C4 1989-93

Designed as an original-style replacement fixing, this plastic rivet helps retain the Targa roof weather seal in its correct position, supporting a secure fit and maintaining the original roof sealing arrangement.

Ideal for replacing broken, missing or damaged original rivets during Targa roof seal replacement, roof refurbishment or classic Porsche restoration.

What Does the Targa Seal Plastic Rivet Do?

The plastic rivet is used to secure the Targa roof seal to its designated mounting position.

The Targa roof relies on correctly fitted weather seals to help prevent water, wind and road noise from entering the passenger compartment.

This retaining rivet helps keep the seal correctly located, preventing unwanted movement or displacement during roof installation, removal and normal vehicle use.

Although small, it is an important fixing component when maintaining or restoring the Targa roof sealing system.

Why Do Targa Seal Plastic Rivets Fail?

Plastic retaining rivets can deteriorate over time, particularly on classic Porsche vehicles where the original fittings may be several decades old.

Common causes of failure include:

• Plastic becoming brittle through age
• Exposure to sunlight and temperature changes
• Damage during Targa roof seal removal
• Repeated roof maintenance and refurbishment
• Incorrect removal or installation
• Cracking or breaking of the retaining head
• General wear and deterioration

Once damaged, the rivet may no longer hold the seal securely in its intended position.

When Should It Be Replaced?

Replacement is recommended whenever a plastic rivet is broken, missing, loose or no longer provides secure retention.

Typical signs include:

• Missing Targa seal fixing points
• Broken or cracked rivet heads
• Loose or displaced sections of weather seal
• Rivets damaged during seal removal
• Brittle or deteriorated original plastic
• Insecure fitting following roof refurbishment

It is advisable to inspect the retaining rivets whenever replacing or adjusting the Targa roof seals.

Checks During Replacement

When replacing the Targa seal plastic rivet, inspect the surrounding roof sealing components.

Check that the weather seal is correctly positioned and free from splits, distortion or excessive compression.

Inspect the retaining holes and mounting surfaces for damage, ensuring the replacement rivet can be fitted securely without excessive force.

If the roof seal has become hardened, flattened or damaged, replacing the rivet alone may not resolve wind noise or water leaks.

Ensure all retaining points are correctly secured before refitting or adjusting the Targa roof.

Porsche 911 & 964 Targa Roof Seals, Plastic Rivets & Weatherstrip Fixings

Maintaining the Targa roof sealing system is essential for protecting the interior of classic Porsche 911 and 964 Targa models against water ingress, wind noise and unwanted draughts.

The Targa roof uses a combination of rubber weather seals, retaining components and carefully positioned mounting points to achieve an effective seal between the removable roof panel and the vehicle body.

Over time, original plastic retaining rivets can become brittle, cracked or damaged, particularly when removing aged roof seals during restoration work. Replacing damaged or missing retaining rivets helps ensure that the Targa weather seals remain correctly positioned and securely attached.

This small but important component is particularly useful during Targa roof refurbishment, weatherstrip replacement, leak repairs and complete classic Porsche restoration projects.